Cov ntsiab lus ntawm silicon nyob rau hauv dub silicon carbide hmoov txiav txim siab nws hardness. Qhov loj me me ntawm silicon carbide muaj kev cuam tshuam zoo rau kev txiav hlau, tab sis qhov tseem ceeb tshaj plaws yog cov duab ntawm silicon carbide.
Dub silicon carbide yog tsim los ntawm roj av coke thiab silica raws li cov ntaub ntawv tseem ceeb los ntawm kev kub kub smelting nyob rau hauv lub qhov cub tsis kam. Nws hardness yog nruab nrab ntawm corundum thiab pob zeb diamond, thiab nws lub zog txhua yam yog siab dua corundum; dub silicon carbide hmoov yog dub, siv lead ua qauv, siab hardness, muaj peev xwm txiav, ruaj khov khoom, thiab zoo thermal conductivity. Cov duab microscopic yog hexagonal siv lead ua. Mohs hardness ntawm silicon carbide yog 9.2, Vickers microhardness yog 3000--3300 kg / mm, lub Knoop hardness yog 2670-2815 kg / mm, thiab lub microhardness yog 3300 kg / cubic millimeter. Ntsuab silicon carbide hmoov tuaj yeem siv rau kev sib koom ua ke thiab coated abrasive cov cuab yeej, kev sib tsoo dawb thiab polishing, thiab lwm yam.
Haum rau kev ua cov cam khwb cia hlau, carbide, titanium alloy, high-speed steel, thiab lwm yam Nws tuaj yeem zom iav, ceramics, pob zeb, agate, hniav nyiaj hniav kub, jade thiab lwm yam ntaub ntawv uas tsis yog xim hlau, cov khoom cua sov thiab thermal zog. Dub silicon carbide yog tsim los ntawm quartz xuab zeb thiab roj av coke ua cov ntaub ntawv tseem ceeb, thiab yog smelted ntawm qhov kub thiab txias nyob rau hauv lub qhov cub tsis kam. Nws yog siv lead ua dub nrog microhardness HV3100-3280, nkig thiab ntse, thiab muaj qee yam hluav taws xob thiab thermal conductivity.
