Qhov purity ntawm SiC hmoov yuav ncaj qha cuam tshuam rau qhov zoo thiab kev ua tau zoo ntawm SiC ib leeg siv lead ua los ntawm PVT txoj kev, thiab cov ntaub ntawv raw rau kev npaj SiC hmoov yog cov purity siab Si hmoov thiab cov purity siab C hmoov, thiab qhov purity ntawm C hmoov yuav ncaj qha cuam tshuam rau qhov purity ntawm SiC hmoov.
Cov khoom siv raw siv rau hauv kev tsim cov toner feem ntau suav nrog flake graphite, petroleum coke thiab microcrystalline stone ink. Qhov siab dua ntawm graphite purity, qhov siab dua ntawm kev siv tus nqi. Cov txheej txheem graphite purification tuaj yeem muab faib ua cov txheej txheem lub cev thiab cov txheej txheem tshuaj lom neeg. Cov txheej txheem kev ntxuav lub cev suav nrog flotation thiab kev ntxuav kub siab, thiab cov txheej txheem tshuaj lom neeg suav nrog acid-base method, hydrofluoric acid method thiab chloride roasting method. Ntawm lawv, cov txheej txheem kev ntxuav kub siab tuaj yeem siv qhov siab melting point (3773K) thiab boiling point ntawm graphite kom ua tiav 4N5 thiab siab dua purity, uas cuam tshuam nrog evaporation thiab emission ntawm impurities nrog qis boiling point, yog li ua tiav lub hom phiaj ntawm kev ntxuav [6]. Lub tshuab tseem ceeb ntawm cov toner purity siab yog tshem tawm cov teeb meem tsis zoo. Ua ke nrog cov yam ntxwv ntawm kev ntxuav tshuaj lom neeg thiab kev ntxuav kub siab, ib qho tshwj xeeb segmented composite kub siab thermochemical purification txheej txheem tau txais yuav kom ua tiav kev ntxuav ntawm cov khoom siv toner purity siab, thiab cov khoom purity tuaj yeem ntau dua 6N.
Kev ua tau zoo ntawm cov khoom thiab cov yam ntxwv:
1, khoom purity≥99.9999% (6N);
2, kev ruaj khov ntawm cov hmoov carbon purity siab, qib siab ntawm graphitization, tsawg dua impurities;
3, qhov loj thiab hom tuaj yeem hloov kho raws li cov neeg siv khoom xav tau.
Cov kev siv tseem ceeb ntawm cov khoom:
■ Kev tsim cov hmoov SiC purity siab thiab lwm cov khoom siv carbide hluavtaws theem khov kho
■ Cog pob zeb diamond
■ Cov ntaub ntawv thermal conductivity tshiab rau cov khoom siv hluav taws xob
■ Cov khoom siv cathode roj teeb lithium zoo tshaj plaws
■ Cov hlau muaj nqis sib xyaw kuj yog cov khoom siv raw
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