Qhov tawg thiab xeb ntawm cov khoom siv graphite feem ntau yog los ntawm kev ntxhov siab thermal, cov tshuaj lom neeg nrog cov pa roj hauv cov txheej txheem, thiab cov khoom tsis huv. Kev tiv thaiv cov teeb meem no suav nrog kev ua kom zoo dua ntawm kev xaiv cov khoom siv, cov txheej txheem, thiab kev coj ua txij nkawm. Kev tshuaj xyuas qhov tsis zoo thiab kev tiv thaiv ua ntej ua rau lub neej ntawm cov khoom siv graphite ntev dua. Txoj hauv kev no kuj txo lub sijhawm tsis ua haujlwm thiab ua kom cov txheej txheem zoo sib xws.
Cov Ntsiab Lus Tseem Ceeb
- Cov khoom siv graphite yuav tawg vim qhov kub hloov pauv sai sai, cov khoom siv tsis zoo, lossis kev siv tsis zoo. Kev saib xyuas thiab kev xaiv cov khoom siv kom zoo yuav tiv thaiv tau cov teeb meem no.
- Kev xeb hauv cov graphite susceptors tshwm sim vim yog cov tshuaj lom neeg tshuaj lom neeg nrog cov pa lossis cov khoom tsis huv. Cov txheej txheem tshwj xeeb thiab cov pa huv si tiv thaiv lawv.
- Kev sib xyaw ua ke cov ntaub ntawv zoo, kev tuav zoo, thiab cov txheej tiv thaiv pab cov graphite susceptors siv tau ntev dua. Qhov no kuj ua rau cov txheej txheem kev lag luam ua haujlwm zoo dua.
To taub txog cov teeb meem ntawm graphite susceptor
Tus neeg sawv cev graphite yog dab tsi?
Ib qho graphite susceptor yog ib qho tseem ceeb hauv cov txheej txheem kev lag luam kub siab. Nws txhawb nqa thiab ua kom sov cov substrates lossis wafers thaum lub sijhawm ntau yam kev tsim khoom. Kev lag luam siv cov khoom no dav hauv cov ntawv thov uas xav tau kev ruaj khov thermal thiab tshuaj lom neeg. Piv txwv li, hauv epitaxy thiab MOCVD, cov khoom siv graphite txhawb nqa cov substrates thaum lub sijhawm tso zaj duab xis nyias. Cov txheej txheem no suav nrogkub heev, lub tshuab nqus tsev siab, thiab cov pa phem heev, tsis tas yuav muaj kuab paugKev lag luam semiconductor kuj siv cov graphite electrodes thiab cov ntxaij vab tshaus tiv thaiv hauv kev cog ion los hloov kho cov khoom sib xyaw ua ke.Cov khoom siv graphite uas tau coated nrog SiC yog cov khoom tseem ceeb hauv cov khoom siv MOCVD, txhawb nqa thiab cua sov cov khoom siv ib leeg. Lawv qhov zoo cuam tshuam ncaj qha rau qhov sib xws thiab kev huv ntawm cov ntaub ntawv zaj duab xis. Lwm cov ntawv thov suav nrogsilicon epitaxy, cov txheej txheem loj hlob siv lead ua, plasma etching, thiab LED chip ntau lawm.
Txheeb xyuas qhov tawg hauv cov khoom siv graphite
Kev tawg yog ib qho teeb meem tshwm sim hauv cov graphite susceptors. Kev raug kub hnyiab ntev thiab tej chaw uas muaj teeb meem feem ntau ua rau muaj qhov teeb meem no. Kev tshuaj xyuas tsis tu ncua yog qhov tseem ceeb rau kev txheeb xyuas qhov tsis muaj zog ntawm cov qauv. Kev tshuaj xyuas pom kev pab nrhiav pom qhov tsis sib xws ntawm qhov chaw xws li tawg, npuas, lossis tuab tsis sib xws. Cov cim pom no qhia txog tej teeb meem ntawm cov qauv. Yog xav tau kev tshuaj xyuas kom ntxaws ntxiv,kev kuaj mob me me qhia txog cov ntsiab lus zoo duaCov txheej txheem no tuaj yeem tshawb pom cov kab nrib pleb me me lossis qhov tsis sib xws hauv cov qauv khoom uas tsis pom rau lub qhov muag liab qab.
Txheeb Xyuas Kev Xeb Hauv Cov Khoom Siv Graphite
Kev xeb hauv cov graphite susceptors qhia tau tias yog cov khoom puas tsuaj vim yog cov tshuaj lom neeg. Cov cim qhia pom feem ntau suav nrog qhov chaw pitting, erosion, thiab discoloration. Qhov chaw ntawm susceptor yuav zoo li ntxhib lossis tsis sib npaug, qhia txog kev poob khoom. Kev hloov pauv xim kuj tseem tuaj yeem qhia txog kev hloov pauv tshuaj lom neeg ntawm graphite. Hauv cov xwm txheej hnyav, cov duab lossis qhov loj ntawm susceptor yuav hloov pauv pom tseeb, ua rau nws txoj haujlwm thiab kev ua haujlwm zoo. Cov cim no taw qhia txog kev tawm tsam tshuaj lom neeg los ntawm cov pa roj lossis cov kuab paug.
Cov hauv paus ua rau Graphite Susceptor Cracking
Kev Nyuaj Siab Kub thiab Kev Caij Tsheb Kauj Vab
Kev hloov pauv kub sai sai ua rau muaj kev tawg hauv cov graphite susceptors. Cov khoom no feem ntau muaj kev kub thiab txias heev thaum lub sijhawm ua haujlwm. Cov voj voog zoo li no ua rau muaj kev ntxhov siab thermal hauv cov khoom. Thaum cov khoom nthuav dav thiab cog lus tsis sib xws, nws tsim cov zog sab hauv uas tuaj yeem ua rau muaj kev tawg thiab nthuav dav. Piv txwv li, Tantalum Carbide (TaC) txheej txhim kho qhov kev tiv thaiv thermal shock ntawm graphite crucibles. Cov txheej txheem no txo qhov kev pheej hmoo ntawm kev tawg lossis kev ua tsis tiav ntawm cov qauv thaum lub sijhawm hloov pauv kub sai. Nws tswj kev ncaj ncees ntawm cov qauv thaum lub sijhawm cua sov lossis txias sai sai,tiv thaiv kev tawg ntawm qhov chaw thiab kev yaig hauv qab qhov kub heev. Kev ntsuam xyuas ablation qhia tau hais tias TaC txheej tseem nyob ruaj khov nrog kev yaig me ntsis thiab tsis muaj qhov tawg ntawm qhov chaw tom qab 120 vib nas this nyob rau hauv lub nplaim oxyacetylene. Ib yam li ntawd, silicon carbide qhia txog kev ruaj khov thaum lub sijhawm rov ua dua thiab txias. Tshaj25 lub voj voog cua sov/txias, nws tswj tau qhov kub nruab nrab ntawm 329 ± 55 °C, nrog rau kev tshuaj xyuas qhia tsis muaj kev poob qis hauv kev ua haujlwm thermal lossis kev tso cai.
Cov Khoom Siv thiab Cov Kev Tsis Zoo ntawm Kev Tsim Khoom
Cov yam ntxwv ntawm cov khoom siv graphite thiab txhua qhov tsis zoo uas tau tshwm sim thaum lub sijhawm tsim khoom kuj ua lub luag haujlwm tseem ceeb hauv kev tawg. Graphite qhov xwm txheej anisotropic txhais tau tias nws cov yam ntxwv sib txawv nrog kev coj ua, ua rau nws yooj yim rau kev ntxhov siab. Cov khoom tsis huv, qhov khoob, lossis qhov ceev tsis sib xws tuaj yeem ua rau muaj kev ntxhov siab. Cov qhov tsis zoo no dhau los ua qhov tsis muaj zog uas cov kab nrib pleb tuaj yeem yooj yim tsim nyob rau hauv lub zog thermal lossis mechanical. Kev tswj hwm zoo tsis zoo thaum lub sijhawm tsim khoom tuaj yeem ua rau cov teeb meem no hnyav dua, ua rau muaj kev cuam tshuam nrog kev ua haujlwm ntawm cov qauv txij thaum pib.
Kev Nyuaj Siab thiab Kev Tswj Xyuas
Cov zog sab nraud kuj ua rau muaj kev tawg. Kev siv tsis raug thaum lub sijhawm teeb tsa, tshem tawm, lossis kev saib xyuas tsis tu ncua tuaj yeem ua rau muaj kev ntxhov siab loj heev. Kev sib tsoo tsis tau npaj tseg, kev poob, lossis kev siv lub zog tsis sib npaug tuaj yeem tsim cov pob me me uas tom qab ntawd loj hlob mus ua cov kab nrib pleb loj dua. Kev tsim qauv ntawm lub kaw lus nws tus kheej kuj tuaj yeem ua rau muaj; kev txhawb nqa tsis txaus lossis cov txheej txheem clamping tuaj yeem ua rau muaj kev ntxhov siab ntau dhau rau ntawm graphite susceptor thaum lub sijhawm ua haujlwm, ua rau ua tsis tiav ua ntej lub sijhawm.
Cov hauv paus ua rau graphite susceptor corrosion
Cov Tshuaj Tiv Thaiv nrog Cov Pa roj hauv Cov Txheej Txheem
Cov khoom siv graphite muaj cov khoom siv tshuaj lom neeg ruaj khov heevLawv ua pov thawj tias lawv tiv taus feem ntau cov pa roj corrosive thiab cov tshuaj reagents zoo. Txawm li cas los xij, cov pa roj tshwj xeeb tuaj yeem pib ua rau muaj kev cuam tshuam corrosive. Piv txwv li,ammonia (NH3) thiab chlorine (Cl2)paub tias yuav ua rau graphite kub heev. Cov tshuaj tiv thaiv no ua rau cov khoom puas tsuaj mus tas li. Ntxiv mus, cov graphite susceptors ua rau hydrogen kub heev,txog li 2100 KCov tshuaj tiv thaiv no tsim ntau hom hydrocarbons. Cov txheej txheem no yog qhov tseem ceeb hauv cov ntawv thov xws li cov tshuaj lom neeg vapor deposition (CVD) ntawm α-silicon carbide. Ntawm no, tus susceptor nws tus kheej tuaj yeem tsim cov hydrocarbons, cuam tshuam rau cov roj theem hauv thaj chaw loj hlob.
Kev Ua Phem thiab Impurities
Kev ua qias tuaj thiab cov khoom tsis huv ua rau muaj kev xeb sai dua hauv cov graphite susceptors.Cov khoom tsis huv ntawm cov hlau tuaj yeem ua rau cov oxidation ntawm graphite sai duantawm qhov kub siab. Qhov no ua rau muaj kev puas tsuaj ntxiv ntawm cov khoom.Cov khoom tsis huv hauv cov graphite susceptors ua rau corrosion sai dualos ntawm kev ua haujlwm ua cov chaw catalytic. Tshwj xeeb, cov hlau tsis huv xws li Na, K, Ca, Al, thiab Ti tsis tau faib sib npaug. Lawv feem ntau sib cais hauv cov porosities ntawm graphite matrix lossis tshwm sim ua cov ntsiab lus sib cais. Thaum cov impurities no nyob rau ntawm phab ntsa ntawm cov porosities no, lawv ua kom nrawm dua qhov oxidation ntawm graphite. Cov nyhuv catalytic no txo qhov kev tiv thaiv oxidation ntawm cov khoom.
Cov Kev Cuam Tshuam Kub thiab Siab
Kub thiab siab ua lub luag haujlwm tseem ceeb hauv qhov nrawm thiab qhov dav ntawm kev xeb. Kub siab dua feem ntau ua rau lub zog kinetic ntawm cov tshuaj reactant nce ntxiv. Qhov no ua rau cov tshuaj tiv thaiv sai dua ntawm cov pa roj thiab cov khoom siv graphite susceptor. Kub siab kuj tseem tuaj yeem hloov pauv cov khoom siv microstructure, ua rau nws yooj yim rau kev tawm tsam tshuaj lom neeg. Ib yam li ntawd, cov xwm txheej siab tshwj xeeb tuaj yeem cuam tshuam rau qhov concentration ntawm cov pa roj reactive ntawm qhov chaw susceptor. Qhov no cuam tshuam ncaj qha rau qhov nrawm ntawm kev xeb. Kev tswj kub thiab siab zoo tshaj plaws yog qhov tseem ceeb los txo cov teebmeem corrosive no.
Tiv Thaiv Kev Tawg Hauv Cov Khoom Siv Graphite
Kev Txhim Kho Kev Tswj Xyuas Thermal
Kev tswj cua sov kom zoo yog qhov tseem ceeb rau kev tiv thaiv kom tsis txhob muaj kab nrib pleb hauv cov graphite susceptors. Cov chaw tsim khoom yuav tsum tswj cov cua sov thiab txias thaum lub sijhawm ua haujlwm. Kev hloov pauv kub sai sai ua rau muaj kev ntxhov siab kub heev, uas tuaj yeem ua rau muaj kab nrib pleb thiab nthuav dav. Maj mam hloov qhov kub thiab txias ua rau cov khoom nthuav dav thiab sib zog sib npaug, txo qhov kev ntxhov siab sab hauv. Ua ntej cua sov cov susceptors ua ntej coj lawv mus rau qhov chaw kub siab kuj pab txo qhov kub thiab txias. Tsis tas li ntawd, kev ua kom muaj kev faib tawm kub sib npaug thoob plaws qhov chaw susceptor tiv thaiv cov chaw kub hauv zos. Cov chaw kub no tsim kev nthuav dav thiab sib zog sib txawv, uas tuaj yeem ua rau muaj kab nrib pleb.
Xaiv Cov Khoom Siv Graphite Susceptor Zoo
Kev xaiv cov khoom siv graphite kom zoo yog qhov tseem ceeb rau kev tiv thaiv kev tawg. Cov ntawv thov sib txawv xav tau cov khoom siv tshwj xeeb. Piv txwv li, graphite nplej loj muaj zog, ruaj khov, thiab ywj pheej, ua rau nws haum rau cov khoom loj. Nws qhov porosity tseem ceeb thiab qhov loj ntawm cov khoom me me ua rau muaj kev tiv thaiv thermal shock, ua rau nws tswj tau qhov kub thiab txias hloov pauv tau zoo. Cov khoom siv graphite feem ntau suav nrog lub zog compressive siab, xws li11,000 txog 38,000 phaus/sq nti, uas ua rau nws zoo tagnrho rau cov ntawv thov uas xav tau kev tiv taus kev ntxhov siab hnyav. Txawm li cas los xij, graphite tsis muaj zog hauv kev nruj thiab brittle, uas tuaj yeem ua rau chipping thaum lub sijhawm machining.
Thaum xaiv cov khoom siv graphite susceptor zoo tshaj plaws, muaj ntau yam qauv coj los txiav txim siab. Ua ntej, soj ntsuam cov txheej txheem xav tau kom zoo, suav nrog qhov kub thiab txias ua haujlwm, huab cua, thiab kev xav tau kev huv. Cov qauv zoo liASTM F1308-98 (2023)pab soj ntsuam cov khoom siv uas tsis muaj zog kom ntseeg tau tias muaj kev tswj hwm kev ua qias tuaj. Kev sib phim cov khoom siv rau cov kev xav tau ntawm daim ntawv thov suav nrog kev txiav txim siab txog kev siv tshuab. Cov no suav nrog kev kho cov khoom siv sib nqus los ntawm cov tshuaj lom neeg kom sov tau zoo tshaj plaws hauv qab cov xwm txheej tshwj xeeb ntawm lub zog sib nqus. Kev txiav txim siab qhov tseem ceeb ntawm kev poob hysteresis ua kom muaj zog-siv hluav taws xob inductive cua sov. Kev xaiv cov ntaub ntawv zoo li spinel ferrite muab kev ruaj khov tshuaj lom neeg thiab thermal zoo dua li magnetite. Kev zam cov hlau susceptors uas lwj hauv qhov chaw ib puag ncig hnyav kuj tseem ceeb. Kev ua kom zoo tshaj plaws thermal conductivity ua kom muaj kev faib tawm cua sov sib npaug. Xav txog qhov coefficient ntawm thermal expansion (CTE) tswj qhov ruaj khov thaum lub sijhawm thermal cycling. Kev soj ntsuam qhov kub tshwj xeeb thiab thermal shock tsis kam yog qhov tseem ceeb rau kev hloov pauv kub sai. Thaum kawg, kev ua kom muaj hluav taws xob conductivity lossis magnetic khoom yog qhov tsim nyog rau kev ua kom sov induction zoo.
Cov khoom zoo, suav nrog kev huv si thiab kev ua haujlwm ntev, yog qhov tseem ceeb rau lub neej ntev thiab kev ua haujlwm ntawm tus neeg raug mob, txo cov kev pheej hmoo ntawm kev ua qias tuaj.Cov graphite uas muaj purity siabua kom muaj kev ua tau zoo tas mus li thiab cov txiaj ntsig zoo, tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov uas xav tau kev tswj hwm meej. Kev tiv thaiv oxidation zoo dua qub ua rau lub neej ua haujlwm ntev dua ntawm qhov kub siab, txo qhov hloov pauv zaus thiab cov nqi txij nkawm. Kev ua kom sov yog qhov tseem ceeb rau kev hloov pauv cua sov zoo thiab sib xws, txo qhov tsis zoo. Cov kev xaiv kho kom haum, xws li kev kho cov neeg raug mob rau cov khoom siv tshwj xeeb lossis cov txheej txheem xav tau, txhim kho kev ywj pheej ua haujlwm. Kev siv nyiaj tsim nyog suav nrog kev soj ntsuam tag nrho cov nqi ntawm kev muaj, suav nrog tus nqi yuav khoom, lub neej ntev, thiab kev txij nkawm, kom sib npaug kev ua tau zoo nrog cov peev nyiaj. Kev tsim khoom sai thiab cov saw hlau txhim khu kev qha tiv thaiv kev ncua sijhawm tsim khoom. Kev txhawb nqa thiab kev pabcuam txuas ntxiv mus ua kom muaj kev siv zoo tshaj plaws thiab kev daws teeb meem sai. Cov neeg muag khoom nqis peev rau cov ntaub ntawv tshiab lossis cov qauv tsim tuaj yeem muab cov txiaj ntsig sib tw. Kev ua raws li thiab daim ntawv pov thawj, xws li ISO cov qauv, ua kom muaj kev ntseeg siab thiab kev nyab xeeb.
Rau kev ua kom ruaj khov dua, ib qhoSiC txheej ntawm graphite wafer susceptormuaj cov khoom siv zoo heev. Tsim los ntawm SiC qib siab, nws ua rau muaj kev ua tau zoo thermal conductivity thiab tshuaj lom neeg, ua rau nws tiv taus qhov kub thiab txias heev thiab qhov chaw corrosive. Nws cov khoom siv ruaj khov muab kev tiv thaiv zoo heev rau kev hnav thiab kev puas tsuaj, ua kom ntseeg tau tias muaj lub neej ntev thiab kev ua haujlwm txhim khu kev qha.
Kev Xav Txog Kev Tsim Khoom thiab Kev Tsim Khoom rau Graphite Susceptors
Kev tsim qauv thiab cov txheej txheem tsim khoom zoo yuav txo qhov kev pheej hmoo ntawm kev tawg. Cov neeg tsim qauv yuav tsum tsis txhob muaj cov ces kaum ntse thiab kev hloov pauv sai sai hauv qhov seem, vim tias cov yam ntxwv no tsim cov ntsiab lus ntawm kev ntxhov siab. Kev suav nrog cov radii dav dav thiab kev hloov pauv du pab faib kev ntxhov siab ntau dua thoob plaws hauv cov khoom siv. Lub geometry tag nrho ntawm tus susceptor kuj yuav tsum suav nrog kev nthuav dav thermal thiab kev cog lus, tso cai rau kev txav mus los yam tsis ua rau muaj kev ntxhov siab ntau dhau. Thaum lub sijhawm tsim khoom, kev tswj hwm zoo nruj tiv thaiv kev nkag mus ntawm cov khoom tsis huv, qhov khoob, lossis qhov ceev tsis sib xws. Cov qhov tsis zoo no ua haujlwm ua cov ntsiab lus tsis muaj zog uas cov kab nrib pleb tuaj yeem yooj yim tsim. Cov txheej txheem tsim khoom siab heev, xws li kev tsim khoom isotropic graphite, kuj tseem tuaj yeem txhim kho cov khoom siv sib xws thiab txo cov lus teb ntawm kev ntxhov siab anisotropic.
Kev Tswj Xyuas thiab Kev Txhim Kho Cov Graphite Susceptors Kom Zoo
Kev ntxhov siab ntawm kev siv tshuab los ntawm kev tuav thiab teeb tsa tsis raug tuaj yeem ua rau muaj kev tawg tam sim ntawd lossis tsis pom tseeb. Cov neeg ua haujlwm yuav tsum ua raws li cov txheej txheem nruj rau kev tuav cov graphite susceptors. Qhov no suav nrog kev siv cov cuab yeej tsa thiab cov qauv txhawb nqa kom tiv thaiv kev khoov lossis kev nyuaj siab hauv zos. Kev cob qhia cov neeg ua haujlwm txog kev teeb tsa thiab tshem tawm kom raug txo qhov kev pheej hmoo ntawm kev cuam tshuam tsis raug lossis kev clamping tsis sib xws. Susceptors yuav tsum tau txais kev txhawb nqa sib npaug thoob plaws lawv qhov chaw kom tsis txhob tsim cov ntsiab lus ntxhov siab. Kev khaws cia susceptors hauv cov ntim tiv thaiv kuj tseem tiv thaiv kev puas tsuaj los ntawm cov zog sab nraud lossis cov yam ntxwv ib puag ncig ua ntej siv.
Tiv Thaiv Kev Xeb Hauv Cov Khoom Siv Graphite
Kev tiv thaiv kev xeb hauv cov graphite susceptors xav tau ntau txoj hauv kev. Txoj kev no suav nrog kev siv cov txheej txheem tiv thaiv, tswj cov pa roj hauv cov txheej txheem, ua kom zoo dua cov kev ua haujlwm, thiab siv kev saib xyuas tsis tu ncua. Txhua yam khoom ua lub luag haujlwm tseem ceeb hauv kev ua kom lub susceptor ntev dua thiab tswj kev ua haujlwm kom zoo.
Cov Txheej Txheem Nto thiab Kev Kho Mob rau Cov Khoom Siv Graphite
Kev siv cov tshuaj pleev xim tiv thaiv thiab kev kho kom zoo nkauj rau saum npoo av ua rau cov graphite tiv taus xeb ntau dua. Cov tshuaj pleev xim no ua haujlwm ua ib qho thaiv, tiv thaiv cov graphite ntawm cov chaw muaj tshuaj lom neeg thiab qhov kub siab. Muaj ntau hom tshuaj pleev xim ua tau zoo hauv qhov no.
- Tantalum Carbide (TaC): Cov txheej no muaj kev ruaj khov zoo heev. Nws ua haujlwm zoo li thaiv kev oxidation, tshuaj lom neeg, thiab kev hnav khoom siv.
- Titanium Carbide-Tantalum Carbide (TiC-TaC) cov txheej txheem sib xyaw ua keCov txheej no ua rau kom tsis txhob hnav, tshwj xeeb tshaj yog nrog cov ntsiab lus TiC zoo tshaj plaws (piv txwv li, 8.0 wt%). Lawv kuj muab lub zog kho tshuab zoo dua los ntawm kev sib xyaw ua ke qhov nyuaj ntawm TaC nrog lub zog ntawm TiC. Ntxiv mus, lawv muab kev tiv thaiv oxidation zoo thiab kev sib raug zoo ntawm tshuaj lom neeg.
- CVD TaC TxheejCov txheej txheej TaC uas siv cov tshuaj lom neeg hu ua Chemical Vapor Deposition (CVD) muab kev daws teeb meem uas tsim nyog tus nqi. Lawv txo cov nqi tsim khoom thiab ua kom muaj kev ntseeg siab hauv ntau yam kev siv.
- CVD SiC Txheej: Cov txheej txheem CVD Silicon Carbide (SiC) ua kom muaj kev ruaj khov thiab ua haujlwm tau zoo. Qhov no ua rau lawv yog qhov kev xaiv zoo tshaj plaws rau cov ntawv thov tseem ceeb uas xav tau kev ua haujlwm siab.
Cov chaw tsim khoom siv TaC coatings feem ntau siv Chemical Vapor Deposition (CVD). Cov txheej txheem sintering kuj muab txoj hauv kev los txo cov nqi thiab haum rau cov duab nyuaj. Txawm li cas los xij, muaj cov teeb meem kev ruaj khov, suav nrog lub zog lo qis vim qhov sib txawv ntawm kev nthuav dav thermal. Qhov no tuaj yeem ua rau tawg thiab spallation. TaC coatings kuj xav tau kev ntshiab ultra-siab thiab tseem raug rau cov pa roj corrosive infiltration los ntawm cov qhov tsis zoo xws li pinholes thiab tawg. Oxidation pib ntawm qhov kub siab tshaj 500 ° C, tsim Ta2O5, uas ua rau lub txheej puas tsuaj. Txawm hais tias muaj cov teeb meem no, TaC-coated graphite cov ntaub ntawv tau ua pov thawj lub neej ntev ntawmtxog li 200 teevhauv qee daim ntawv thov. Lawv kuj qhia txog lub neej ntev dua piv rau SiC hauv qee cov txheej txheem MOCVD.
Cov txheej SiC rau cov graphite susceptors kuj tseem siv tau los ntawm Chemical Vapor Deposition (CVD). Cov txheej no muab kev ruaj khov thermal thiab kev tiv thaiv oxidation. Lawv txo cov khoom tsis huv los ntawm cov graphite substrate thiab muab kev tswj hwm zoo rau cov khoom siv interface thiab cov khoom nto. Kev tshawb fawb txuas ntxiv txhim kho qhov huv, kev sib xws, thiab lub neej ntev ntawm SiC coatings.
Cov txheej Yttria (Y2O3), qee zaum nrog SiC-ZrB2 sib xyaw ua ke, raug siv los ntawm kev txau plasma rau kev siv uranium yaj. Cov txheej no tau qhia txog kev tiv thaiv xeb thiab kev ua haujlwm ntev. Piv txwv li, txheej Nb / Y2O3 tau ua tiav14 lub voj voog kubdhau qhov kub tas li ntawm 1400 °C. Cov txheej txheem sib xyaw SiC-ZrB2 ua rau lub Y2O3 txheej ruaj khov peb npaug. Nws ua tiav qhov no los ntawm kev txo cov kev ntxhov siab thermal mismatch thiab muab kev tiv thaiv oxidation passive.
Kev Tswj Xyuas Cov Pa Roj Rau Cov Khoom Siv Graphite
Kev tswj cov pa roj hauv cov txheej txheem ua haujlwm zoo yog qhov tseem ceeb rau kev txo qhov xeb hauv cov graphite susceptors. Qhov no suav nrog kev ntxuav cov pa roj uas nkag los thiab ua tib zoo tswj cov huab cua hauv cov txheej txheem.Kev lim cua molecular, tshwj xeeb tshaj yog siv cov pa roj carbon uas tau muab tso rau hauv, muab ib txoj hauv kev zoo heev los tawm tsam thiab tswj kev xeb hauv kev lag luam. Cov thev naus laus zis no lim tau cov pa roj corrosive xws li nitrogen dioxide (NO2), hydrogen fluoride (HF), sulfur dioxide (SO2), sulfur trioxide (SO3), thiab hydrogen sulfide (H2S) los ntawm huab cua. Nws tiv thaiv lawv kom tsis txhob ua rau muaj kev puas tsuaj rau cov tshuab hluav taws xob thiab hluav taws xob. Lub peev xwm nqus tau siab ntawm cov pa roj carbon uas tau muab tso rau hauv yog txhim kho los ntawm kev muab tso rau hauv uas tsim rau cov tshuaj corrosive tshwj xeeb. Nws cov txiaj ntsig tuaj yeem ua kom zoo dua los ntawm kev lim dej ntau theem, kev ua kom zoo dua ntawm kev ntws, thiab cov tshuab saib xyuas thiab tswj hwm ntse.
Muaj ntau lub tshuab lim roj:
- Cov tshuab qhuavCov tshuab no siv cov kua qaub los yog sodium bicarbonate ua hmoov qhuav los kho cov pa roj acid. Cov lim dej Baghouse ces tshem tawm cov khoom khov.
- Cov txheej txheem semi-ntubCov kab ke no vam khom kev nqus los ntawm kev txau. Ib qho tshuaj nqus raug txhaj ua cov tshuaj suspension rau hauv cov roj hauv lub reactor, tom qab ntawd los ntawm kev lim.
- Cov txheej txheem ntub dejCov no feem ntau siv cov tshuaj ntxuav nrog cov kua dej yooj yim (piv txwv li, cov kua caustic soda) los tshem tawm cov pa roj. Lawv zoo tshwj xeeb rau cov tshuaj chlorine thiab cov pa roj acid xws li SO2.
Cov kev daws teeb meem lag luam kuj muab kev tiv thaiv zoo.EcoScrub™ Cov Tshuab Lim Cua Rau Kev Lag Luam Uas Muaj Peev Xwm Sib Npaugthiab EcoScrub™ Thin Bed Systems yog cov tshuab granular media-based rau cov pa roj corrosive thiab tshem tawm ntxhiab tsw. Lawv tswj cov peev xwm ntawm 500-2000 CFM, nrog rau cov peev xwm siab dua. Lub Bry-Air Control Room Air Purifier siv lub honeycomb filter-based gas phase filtration system (500-2000 CFM). Honeycomb Chemical Filter - DRISORB™ Series muaj cov macroporous desiccant-based fluted media nrog qhov siab poob qis. BRYSORB™ Chemical Media muaj cov spherical/cylindrical porous pellets impregnated nrog cov tshuaj proprietary.
Cov Tshuab Lim Dej Bry-Air Gas Phase Filtration Systems tiv thaiv cov khoom siv hluav taws xob los ntawm cov pa roj corrosive. Lawv tshem tawm cov pa roj no los ntawm kev nqus thiab chemisorption, txo cov sijhawm tsis ua haujlwm thiab tswj cov qauv ib puag ncig xws li ANSI/ISA-71.04-2013 thiab IEC. Cov tshuab no kuj tseem tshem tawm cov pa roj tsw qab thiab pab tswj kev xeb hauv kev lag luam xws li roj thiab roj av los ntawm kev tshem tawm cov kuab paug phem.Pall pom zoo Gaskleen roj purifier sib dhos, uas muab AresKleen media nrog Ultramet-L™ stainless hlau lim media, rau Argon purification. Rau kev tswj thiab txo cov pa oxygen thiab hydrocarbon hom, Pall purifiers nrog AresKleen™ INP medium zoo. Cov kab ke no muab kev ruaj khov ntawm cov txheej txheem, kev ua haujlwm zoo dua, thiab kev txo qis qhov tsis zoo.
Kev Txhim Kho Cov Txheej Txheem rau Graphite Susceptors
Kev ua tib zoo kho cov txheej txheem tsis zoo cuam tshuam ncaj qha rau qhov xeb ntawm cov graphite susceptors. Kev tswj qhov kub, siab, thiab cov roj ntws txo qis cov tshuaj tiv thaiv corrosive. Kev tswj qhov kub ua haujlwm ruaj khov tiv thaiv cov chaw kub hauv zos uas xeb tuaj yeem nrawm dua. Kev hloov pauv kub sai kuj tseem tuaj yeem ua rau cov txheej txheem tiv thaiv ntxhov siab, ua rau lawv yooj yim rau kev tawm tsam tshuaj lom neeg. Kev kho cov roj ntws kom ntseeg tau tias tshem tawm cov khoom seem ntawm cov tshuaj tiv thaiv thiab tiv thaiv kev tsim cov tshuaj corrosive ze ntawm qhov chaw susceptor. Ntxiv mus, kev tswj qhov siab kom raug pab tswj qhov concentration ntawm cov pa roj reactive, cuam tshuam ncaj qha rau qhov nrawm ntawm kev puas tsuaj tshuaj lom neeg. Cov neeg ua haujlwm yuav tsum tsim thiab ua raws li cov kev ntsuas zoo tshaj plaws rau txhua txoj haujlwm tshwj xeeb.
Kev Ntxuav thiab Kho Cov Khoom Siv Graphite Tsis Tu Ncua
Kev ntxuav thiab saib xyuas tsis tu ncua yog qhov tseem ceeb rau kev tiv thaiv kev xeb thiab txuas ntxiv lub neej ua haujlwm ntawm cov graphite susceptors. Raws sijhawm, cov seem los ntawm cov pa roj lossis cov khoom tso tawm tuaj yeem sib sau ua ke ntawm qhov chaw susceptor. Cov deposits no tuaj yeem ua haujlwm ua cov catalysts rau cov tshuaj tiv thaiv corrosive lossis tsim cov chaw ib puag ncig uas ua rau kev puas tsuaj sai dua. Kev tshuaj xyuas pom tsis tu ncua pab txheeb xyuas cov cim qhia ntxov ntawm kev xeb, xws li pitting, discoloration, lossis qhov chaw roughening. Cov txheej txheem ntxuav, feem ntau cuam tshuam nrog cov tshuaj ntxuav tshwj xeeb lossis cov txheej txheem tshem tawm tshuab, tshem tawm cov seem tsis zoo no. Txawm li cas los xij, cov txheej txheem ntxuav yuav tsum tau xaiv kom zoo kom tsis txhob ua puas rau cov txheej txheem tiv thaiv lossis graphite nws tus kheej. Kev hloov pauv raws sijhawm ntawm susceptors uas qhia txog cov cim tseem ceeb ntawm kev hnav lossis xeb tiv thaiv kev ua tsis tiav loj heev thiab tswj cov txheej txheem zoo.
Kev Tiv Thaiv Kev Sib Koom Ua Ke rau Cov Khoom Siv Graphite
Kev Sib Koom Tes Ua Ke Cov Khoom Siv, Cov Txheej Txheem, thiab Cov Tswv Yim Tiv Thaiv
Kev tiv thaiv zoo ntawm cov teeb meem graphite susceptor xav tau kev sib koom ua ke. Txoj kev no ua ke xaiv cov khoom siv zoo, kev tswj cov txheej txheem kom meej, thiab cov txheej txheem tiv thaiv zoo. Cov chaw tsim khoom xaiv cov khoom siv uas muaj kev tiv thaiv thermal thiab kev tawm tsam tshuaj lom neeg. Lawv kuj ua kom zoo dua cov txheej txheem xws li qhov kub thiab txias thiab cov nqi ntws roj. Kev siv cov txheej txheem tiv thaiv, xws li SiC lossis TaC, tsim ib qho kev thaiv tiv thaiv cov chaw ua haujlwm corrosive. Cov susceptors txhim kho pab txhawb raukev siv nyiaj kom zoo thiab kev txuag hluav taws xobLawv muab kev ua haujlwm thermal zoo dua, uas txo cov nqi ua haujlwm rau cov chaw tsim khoom loj. Qhov kev nqis peev no hauv cov thev naus laus zis siab heev ua rau muaj txiaj ntsig nyiaj txiag mus sij hawm ntev los ntawm kev siv hluav taws xob tsawg dua thiab cov nuj nqis ua haujlwm.
Cov txiaj ntsig ntawm Txoj Kev Npaj Tiv Thaiv Kom Tag Nrho
Ib txoj kev npaj tiv thaiv kom zoo muaj ntau yam zoo. Nws ua rau lub neej ntawm tus neeg raug mob ntev dua thiab txhim kho kev ua haujlwm zoo dua.Cov txheej txheem kev ruaj ntseg zoo tiv thaiv cov teeb meemlos ntawm kev saib xyuas thiab kev txhim kho cov txheej txheem. Cov no suav nrog kev tshuaj xyuas tsis tu ncua, kev tshuaj xyuas cov txheej txheem, thiab cov sijhawm txij nkawm tiv thaiv. Cov txheej txheem tswj hwm qhia txog cov ntsiab lus tshuaj xyuas, cov txheej txheem sim, thiab cov qauv lees txais.Cov phiaj xwm zoo niaj hnub no suav nrog cov cuab yeej digitalrau kev saib xyuas thiab tswj. Cov txheej txheem tsis siv neeg taug qab cov ntsuas zoo hauv lub sijhawm tiag tiag. Kev txawj ntse dag pab kwv yees cov teeb meem zoo ua ntej lawv tshwm sim. Cov kev nce qib thev naus laus zis no ua kom muaj zog rau cov txheej txheem tswj hwm zoo ib txwm muaj, txhim kho kev ua haujlwm zoo thiab kev ua haujlwm tau zoo. Cov txiaj ntsig suav nrogtxhim kho kev tsim khoom thiab zoo dua ntawm cov khoomCov lag luam kuj muaj tus nqi qis dua ntawm kev tsis ua raws li txoj cai, zam kev nplua thiab kev rau txim. Kev tsim kho tshiab hauv kev lag luam tsav kev txo nqi thiab kev nthuav dav los ntawm kev ua kom cov txheej txheem tsim khoom yooj yim dua. Qhov no ua rau cov nqi tsim khoom qis dua thiab ua rau muaj kev tsim khoom ntau. Qhov no txhais tau tias yog kev txuag nyiaj mus sij hawm ntev rau cov lag luam. Lawv tuaj yeem tsim khoom tau zoo dua thiab ntawm tus nqi qis dua rau ib chav.
Kev nkag siab txog cov hauv paus ua rau graphite susceptor tawg thiab xeb tau zoo tiv thaiv tau. Cov tswv yim sib koom ua ke, suav nrog kev xaiv cov khoom siv zoo, kev tswj hwm thermal kom raug, kev tiv thaiv txheej txheem, thiab kev tswj hwm cov txheej txheem kom zoo, yog qhov tseem ceeb heev. Kev tshuaj xyuas qhov tsis zoo thiab kev tiv thaiv ua ntej ua rau lub neej ntawm susceptor ntev dua, txo lub sijhawm tsis ua haujlwm, thiab xyuas kom meej tias cov txheej txheem zoo ib yam.
Cov Lus Nug Feem Ntau
Dab tsi yog cov ua rau muaj kev tawg ntawm cov graphite susceptors?
Kev ntxhov siab ntawm qhov kub thiab txias sai sai, cov khoom tsis zoo, thiab kev siv tshuab tsis zoo feem ntau ua rau tawg. Kev tswj hwm zoo yuav tiv thaiv tau cov teeb meem no.
Cov txheej tiv thaiv ua li cas thiaj tiv thaiv tau xeb hauv cov graphite susceptors?
Cov txheej txheej xws li SiC lossis TaC tsim ib qho thaiv ruaj khov. Qhov thaiv no tiv thaiv cov graphite los ntawm cov tshuaj lom neeg thiab qhov kub siab, ua rau lub neej ntawm cov susceptor ntev dua.
Vim li cas kev tswj cov pa roj txheej txheem thiaj li tseem ceeb rau kev tiv thaiv kev xeb ntawm cov tshuaj lom neeg?
Kev ntxuav cov pa roj hauv cov txheej txheem thiab tswj cov huab cua tshem tawm cov tshuaj lom neeg. Qhov no tiv thaiv cov tshuaj lom neeg tsis zoo nrog cov graphite, ua kom cov khoom siv ruaj khov thiab ua tau zoo.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-15-2025