Silicon carbide paub txog nws cov khoom siv ruaj khov, ua kom zoo thermal conductivity, qis thermal expansion coefficient, thiab zoo heev hnav tsis kam. Ntxiv nrog rau nws txoj kev siv ntau dhau los ua cov abrasive, silicon carbide muaj ntau yam kev siv. Piv txwv li, thaum silicon carbide hmoov yog siv rau sab hauv phab ntsa ntawm hydraulic turbine impellers los yog lub tog raj kheej blocks siv cov tswv yim tshwj xeeb, nws ua rau kom muaj kev tiv thaiv zoo thiab tuaj yeem txuas ntxiv lub neej ntawm cov khoom no los ntawm ib mus rau ob zaug. Tsis tas li ntawd, nws ua hauj lwm raws li cov khoom zoo refractory uas yog lub teeb yuag, compact, thiab muaj zog, pab txhawb kev txuag hluav taws xob.
Qib qis silicon carbide, uas muaj kwv yees li 85% SiC, yog ib qho zoo deoxidizer uas ua rau cov txheej txheem steelmaking, pab tswj cov tshuaj muaj pes tsawg leeg, thiab txhim kho steel zoo. Tsis tas li ntawd, silicon carbide yog siv dav hauv kev tsim cov silicon carbide rods rau hluav taws xob cua sov.
Nrog rau Mohs hardness ntawm 9.5, silicon carbide nyob rau hauv qab pob zeb diamond nyob rau hauv cov nqe lus ntawm hardness. Nws boasts zoo heev thermal conductivity, ua hauj lwm raws li ib tug semiconductor, thiab yog resistant rau oxidation ntawm siab kub. Muaj tsawg kawg yog 70 crystalline cov ntaub ntawv ntawm silicon carbide, nrog -silicon carbide yog qhov nthuav dav tshaj plaws, tsim ntawm qhov kub siab tshaj 2000 degree thiab nthuav tawm cov qauv siv lead ua hexagonal. Nyob rau hauv sib piv, -silicon carbide, uas muaj ib tug cubic qauv zoo ib yam li pob zeb diamond, cov ntaub ntawv ntawm qis kub. μ-silicon carbide, thaum tsis tshua muaj, tau sau tseg rau nws txoj kev ruaj ntseg thiab lub suab zoo nkauj thaum muaj kev cuam tshuam, ua rau nws tsim nyog rau kev siv los ntawm kev txhawb nqa heterogeneous catalytic vim nws qhov chaw siab dua.
Nrog lub ntiajteb txawj nqus ntawm 3.2 g / cm³ thiab kub kub ntawm ib ncig ntawm 2700 degree, silicon carbide yog ib qho zoo tagnrho raw khoom rau bearings thiab high-temperature furnaces. Nws tseem muaj zog nyob rau hauv kev ua tau zoo siab thiab ua pov thawj tsis tshua muaj tshuaj reactivity. Nws zoo kawg nkaus thermal conductivity, siab tawg hluav taws xob teb lub zog, thiab qhov siab tshaj plaws tam sim no tau ua rau muaj kev txaus siab rau nws lub peev xwm los hloov silicon hauv high-power semiconductor daim ntaub ntawv. Tsis tas li ntawd, nws cov kev sib txuas muaj zog nrog cov hluav taws xob microwave thiab cov ntsiab lus sublimation siab ua rau nws siv tau rau cov ntawv siv cua sov hlau.
