Sintered silicon carbide yog ib qho khoom siv ceramic tseem ceeb, siv dav hauv qhov kub thiab txias, siab siab thiab lub zog siab. Reactive sintering ntawm SIC yog ib kauj ruam tseem ceeb hauv kev npaj cov ntaub ntawv sintered SIC. Kev tswj hwm zoo tshaj plaws ntawm sintering SIC reaction tuaj yeem pab peb tswj hwm qhov xwm txheej ntawm cov tshuaj tiv thaiv thiab txhim kho cov khoom zoo. Txoj kev tswj hwm zoo tshaj plaws ntawm sintered silicon carbide reaction tau tham hauv daim ntawv no.
1. Kev ua kom zoo dua ntawm cov xwm txheej SIC sintering
Cov xwm txheej ntawm cov tshuaj tiv thaiv yog cov yam ntxwv tseem ceeb ntawm cov tshuaj tiv thaiv sintered silicon carbide, suav nrog qhov kub thiab txias ntawm cov tshuaj tiv thaiv, qhov siab ntawm cov tshuaj tiv thaiv, qhov sib piv ntawm cov tshuaj tiv thaiv thiab lub sijhawm tiv thaiv. Thaum ua kom zoo dua cov xwm txheej ntawm cov tshuaj tiv thaiv, nws yog qhov tsim nyog los kho raws li cov kev xav tau tshwj xeeb ntawm daim ntawv thov thiab cov txheej txheem tiv thaiv.
(1) Qhov kub ntawm cov tshuaj tiv thaiv: Qhov kub ntawm cov tshuaj tiv thaiv yog ib qho tseem ceeb uas cuam tshuam rau qhov ceev ntawm cov tshuaj tiv thaiv thiab qhov zoo ntawm cov khoom. Hauv qee qhov ntau thiab tsawg, qhov kub ntawm cov tshuaj tiv thaiv siab dua, qhov ceev ntawm cov tshuaj tiv thaiv sai dua, qhov zoo ntawm cov khoom kuj siab dua. Txawm li cas los xij, qhov kub ntawm cov tshuaj tiv thaiv siab dhau yuav ua rau cov qhov hws thiab cov kab nrib pleb hauv cov khoom nce ntxiv, cuam tshuam rau qhov zoo ntawm cov khoom.
(2) Lub zog ntawm cov tshuaj tiv thaiv: Lub zog ntawm cov tshuaj tiv thaiv kuj muaj feem cuam tshuam rau qhov ceev ntawm cov tshuaj tiv thaiv thiab qhov ceev ntawm cov khoom. Hauv qee qhov ntau thiab tsawg, qhov siab dua ntawm qhov siab ntawm cov tshuaj tiv thaiv, qhov ceev ntawm cov tshuaj tiv thaiv sai dua thiab qhov ceev ntawm cov khoom ntau dua. Txawm li cas los xij, qhov siab dhau ntawm cov tshuaj tiv thaiv kuj tseem tuaj yeem ua rau muaj ntau qhov hws thiab tawg hauv cov khoom.
(3) qhov sib piv ntawm cov tshuaj reactant: qhov sib piv ntawm cov tshuaj reactant yog lwm yam tseem ceeb uas cuam tshuam rau qhov ceev ntawm cov tshuaj reaction thiab qhov zoo ntawm cov khoom. Thaum qhov sib piv ntawm cov pa roj carbon rau silicon yog qhov tsim nyog, qhov nrawm ntawm cov tshuaj reaction thiab qhov hnyav ntawm cov khoom. Yog tias qhov sib piv ntawm cov tshuaj reactant tsis tsim nyog, nws yuav cuam tshuam rau qhov nrawm ntawm cov tshuaj reaction thiab qhov hnyav ntawm cov khoom.
(4) Lub sijhawm teb: Lub sijhawm teb yog ib qho ntawm cov yam uas cuam tshuam rau qhov ceev ntawm kev teb thiab qhov zoo ntawm cov khoom. Hauv qee qhov ntau thiab tsawg, lub sijhawm teb ntev dua, qhov qeeb dua qhov ceev ntawm kev teb thiab qhov zoo ntawm cov khoom. Txawm li cas los xij, lub sijhawm teb ntev dhau yuav ua rau muaj qhov hws thiab tawg hauv cov khoom, cuam tshuam rau qhov zoo ntawm cov khoom.
2. Kev tswj cov txheej txheem ntawm cov tshuaj sintering silicon carbide
Thaum lub sijhawm sintering SIC reaction, nws yog ib qho tsim nyog los tswj cov txheej txheem reaction. Lub hom phiaj ntawm kev tswj hwm yog kom ntseeg tau tias qhov kev ruaj khov ntawm cov tshuaj tiv thaiv thiab qhov sib xws ntawm cov khoom zoo. Kev tswj hwm cov txheej txheem reaction suav nrog kev tswj kub, kev tswj siab, kev tswj huab cua thiab kev tswj hwm qhov zoo ntawm reactant.
(1) Kev tswj qhov kub thiab txias: Kev tswj qhov kub thiab txias yog ib qho tseem ceeb ntawm kev tswj cov txheej txheem tshuaj tiv thaiv. Kev tswj qhov kub thiab txias yuav tsum tau tswj kom meej li meej tau kom ntseeg tau tias cov txheej txheem tshuaj tiv thaiv ruaj khov thiab cov khoom zoo sib xws. Hauv kev tsim khoom niaj hnub no, lub kaw lus tswj hwm computer feem ntau yog siv los tswj qhov kub thiab txias ntawm cov tshuaj tiv thaiv kom raug.
(2) Kev tswj siab: Kev tswj siab yog lwm yam tseem ceeb ntawm kev tswj cov txheej txheem tshuaj tiv thaiv. Los ntawm kev tswj lub siab tshuaj tiv thaiv, kev ruaj khov ntawm cov txheej txheem tshuaj tiv thaiv thiab kev sib xws ntawm cov khoom zoo tuaj yeem ua kom ntseeg tau. Hauv kev tsim khoom niaj hnub no, lub kaw lus tswj hwm computer feem ntau yog siv los tswj lub siab tshuaj tiv thaiv kom raug.
(3) Kev tswj huab cua: Kev tswj huab cua hais txog kev siv huab cua tshwj xeeb (xws li huab cua inert) hauv cov txheej txheem tshuaj tiv thaiv los tswj cov txheej txheem tshuaj tiv thaiv. Los ntawm kev tswj huab cua, kev ruaj khov ntawm cov txheej txheem tshuaj tiv thaiv thiab kev sib xws ntawm cov khoom zoo tuaj yeem ua kom ntseeg tau. Hauv kev tsim khoom niaj hnub no, lub kaw lus tswj hwm computer feem ntau yog siv los tswj huab cua.
(4) Kev tswj xyuas qhov zoo ntawm cov tshuaj reactant: Kev tswj xyuas qhov zoo ntawm cov tshuaj reactant yog ib qho tseem ceeb uas yuav tsum ua kom muaj kev ruaj khov ntawm cov txheej txheem tshuaj tiv thaiv thiab kev sib xws ntawm cov khoom zoo. Los ntawm kev tswj xyuas qhov zoo ntawm cov tshuaj reactants, kev ruaj khov ntawm cov txheej txheem tshuaj tiv thaiv thiab kev sib xws ntawm cov khoom zoo tuaj yeem ua kom ntseeg tau. Hauv kev tsim khoom niaj hnub no, kev tswj hwm computer feem ntau yog siv los tswj qhov zoo ntawm cov tshuaj reactants.
Kev tswj hwm zoo tshaj plaws ntawm cov tshuaj SIC sintering yog ib kauj ruam tseem ceeb los npaj cov khoom siv SIC sintered zoo. Los ntawm kev ua kom zoo dua cov xwm txheej tshuaj tiv thaiv, tswj cov txheej txheem tshuaj tiv thaiv thiab saib xyuas cov khoom tshuaj tiv thaiv, kev ruaj khov ntawm cov txheej txheem tshuaj tiv thaiv thiab kev sib xws ntawm cov khoom zoo tuaj yeem ua kom ntseeg tau. Hauv kev siv tiag tiag, cov tshuaj tiv thaiv ntawm sintered silicon carbide yuav tsum tau kho raws li cov xwm txheej thov tshwj xeeb kom tau raws li cov kev xav tau sib txawv.
Lub sijhawm tshaj tawm: Lub Rau Hli-05-2023