Cov khoom thiab kev siv tseem ceeb ntawm cov tshuaj tiv thaiv-sintered silicon carbide

Cov yam ntxwv thiab kev siv tseem ceeb ntawm silicon carbide uas tau sintered? Silicon carbide kuj tseem hu ua carborundum lossis xuab zeb uas tsis kub hnyiab, yog ib qho inorganic compound, muab faib ua ob hom: ntsuab silicon carbide thiab dub silicon carbide. Koj puas paub txog cov yam ntxwv thiab kev siv tseem ceeb ntawm silicon carbide? Niaj hnub no, peb yuav qhia txog cov yam ntxwv thiab kev siv tseem ceeb ntawm silicon carbide.

Cov tshuaj silicon carbide reactive sintering yog siv cov xuab zeb quartz, calcined petroleum coke (lossis thee coking), ntoo slag (cov khoom siv ntsev zaub mov ntxiv rau kev tsim cov silicon carbide ntsuab) thiab lwm yam khoom siv raw, los ntawm lub cub tawg hluav taws xob kub tas mus li.

Cov khoom ntawm cov tshuaj tiv thaiv-sintered silicon carbide:

1. Kev ua tau zoo ntawm cov cua sov thiab cov coefficient ntawm kev nthuav dav ntawm silicon carbide. Ua ib hom khoom siv refractory, cov cib carbonized muaj kev tiv thaiv zoo heev rau kev poob siab. Qhov no feem ntau pom tseeb hauv nws cov thermal conductivity muaj zog (coefficient hloov pauv cua sov) thiab cov coefficient ntawm kev nthuav dav thermal qis.

2, qhov conductivity ntawm silicon carbide. Silicon carbide yog ib yam khoom siv semiconductor, nws qhov conductivity sib txawv nrog hom thiab qhov ntau ntawm cov khoom tsis huv uas tau nkag mus rau hauv crystallization, thiab qhov tsis kam yog nyob nruab nrab ntawm 10-2-1012Ω·cm. Ntawm lawv, txhuas, nitrogen thiab boron muaj feem cuam tshuam loj rau qhov conductivity ntawm silicon carbide, thiab qhov conductivity ntawm silicon carbide nrog ntau txhuas nce ntxiv ntau heev.

3. Kev tiv thaiv ntawm silicon carbide. Qhov kev tiv thaiv ntawm silicon carbide hloov pauv nrog qhov hloov pauv ntawm qhov kub thiab txias, tab sis nyob rau hauv qee qhov kub thiab txias thiab cov yam ntxwv kub ntawm cov hlau resistor raug thim rov qab. Kev sib raug zoo ntawm kev tiv thaiv thiab kub ntawm silicon carbide yog qhov nyuaj dua. Qhov conductivity ntawm reaction-sintered silicon carbide nce nrog qhov kub nce mus rau qee tus nqi, thiab qhov conductivity txo qis thaum qhov kub nce dua.

Kev siv cov silicon carbide:

1, cov ntaub ntawv hnav-resistant - feem ntau yog siv los ua lub log xuab zeb, sib tsoo ntawv xuab zeb, whetstone, sib tsoo log, sib tsoo muab tshuaj txhuam thiab cov khoom photovoltaic hauv photovoltaic cells, photovoltaic cells thiab cov khoom sib tsoo nto, sib tsoo thiab polishing.

2, cov khoom siv refractory siab kawg - tuaj yeem siv ua cov khoom siv deoxidizer thiab cov khoom siv tiv taus corrosion hauv kev lag luam metallurgical, los ua cov khoom siv prefabricated kub tas mus li, cov khoom ruaj khov, thiab lwm yam.

3, cov khoom siv ua los ntawm cov khoom siv ceramic - tsis yog tsuas yog txo qhov ntim ntawm lub qhov cub xwb, tab sis kuj txhim kho qhov zoo ntawm cov khoom siv hauv lub qhov cub, txo lub sijhawm voj voog, yog cov khoom siv tsis ncaj qha rau kev ua cov khoom siv ceramic glaze sintering, cov khoom siv ceramic kub tsis-oxide tas mus li, cuam tshuam cov khoom siv sintered porcelain.

4, cov hlau tsis tshua muaj - cov lag luam hlau thiab hlau, cov chaw ua haujlwm sib xyaw ua ke hauv kev lag luam metallurgical, muaj qee yam kev siv.

5, lwm yam - siv los ua cov txheej txheem hluav taws xob deb infrared lossis silicon carbide phaj hluav taws xob deb infrared.

Vim tias silicon carbide muaj cov khoom siv organic du, cov coefficient hloov pauv cua sov siab, cov coefficient nthuav dav me me, kev tiv thaiv zoo hnav, ntxiv rau cov ntaub ntawv hnav tsis kam, muaj qee qhov kev siv tseem ceeb, xws li: nrog cov txheej txheem tshiab rau silicon carbide hmoov kua nplaum rau hauv lub impeller centrifugal lossis lub cev lub tog raj kheej, tuaj yeem txhim kho kev tiv thaiv hnav thiab ua rau lub neej ua haujlwm ntev dua 1 txog 2 zaug; Siv los ua cov khoom siv refractory qib siab, kev tiv thaiv kub siab, me me, lub teeb yuag thiab lub zog siab, kev tiv thaiv ib puag ncig thiab kev txuag hluav taws xob yog qhov pom tseeb. Silicon carbide qib qis (muaj li 85% SiC) yog tus neeg sawv cev deoxidizing zoo, uas tuaj yeem siv los ua kom nrawm dua hlau ua, thiab yog qhov zoo rau kev tswj hwm cov khoom sib xyaw thiab txhim kho qhov zoo ntawm hlau. Tsis tas li ntawd, silicon carbide kuj tseem siv los ua ntau yam khoom siv cua sov hluav taws xob silicon molybdenum pas nrig.