Silicon carbide (sic) yog hexagonalryry crystal tsim los ntawm kev sib txuas ntawm silicon thiab carbon. Nws tuaj yeem muab faib ua ob pawg raws cov txheej txheem tsim khoom:Silicon Carbide Dubthiab ntsuab carmide. Dub sic, nrog nws tus nqi siab - ua tau zoo thiab muaj zog yoog raws li cov ntawv thov xaus. Ua ke nrog ntsuab sic, nws ua ib lub cev tsis meej pem npog tag nrho cov xwm txheej.
Cov tub ntxhais kev ua tau zoo yoog rau kev sib tsoo xav tau, dub silicon carbide muaj ntau cov nqi
Cov yam ntxwv ua kom zoo ntawm silicon carbide yog heev sib xws nrog cov kev tseev ntawm coated abrasives rau "muaj txiaj ntsig zoo hnav tsis kam, thiab kev hloov kho tau rau ntau yam ntawm substrates." Silicon Carbide Dub, thaum tswj hwm nws cov kev ua tau tseem ceeb, kuj tseem ua kom zoo rau nws cov kev ua tau zoo hauv kev sib tw ua cov xwm txheej:
Hardness siab thiab cov coj zoo heev, tus nqi zoo tshaj plaws:
Silicon carbide muaj mohs hardness ntawm 9.2, thib ob tsuas yog pob zeb diamond (10) thiab cubic boron nitride (cbn). Nws cov microhardness tuaj yeem ncav cuag 2800-}}}}}}}}}}}}}}} ovundum (xim av corundum yog kwv yees li 2000 kg / mm²). Txawm hais tias dub silicon carbide yog tsawg dua li ntsuab li ntsuab silicon carbide, nws hardness yog txaus rau kev sib tsoo feem ntau cov khoom nruab nrab thiab cov khoom tawv tsawg. Ntawm tsuas yog 60% -70% ntawm tus nqi ntawm cov zaub mov ntsuab silicon
Zoo thermal conductivity thiab cua sov dissipation kom tsis txhob muaj kev puas tsuaj rau cov haujlwm ua haujlwm:
Silicon carbide muaj qhov thermal conductivity ntawm kwv yees li 80 -}}} · k), 3-5 zaug uas ntawm corundum. Cov cuab yeej no tso cai rau dub silicon carbide mus sai sai sib tsoo thaum cam khwb cia hlau thiab aluminium muaj kev sib tsoo thiab deformation ntawm lub zos kev kub siab. Qhov no ua rau nws haum tshwj xeeb rau kev ua, cov khoom siv loj tshuab ntawm cov khoom siv kho vajtse thiab cov khoom siv hauv tsev.
Muaj zog tshuaj ruaj khov, hloov tau rau cov chaw ua haujlwm ua kom zoo:
Silicon carbide dub tsis hnov mob nrog corrosive media xws li acids thiab alkalis ntawm chav sov, thiab tsuas yog rov qab muaj zog nrog cov hauv paus muaj zog thaum muaj zog. Cov yam ntxwv ua kom pom tseeb no ua kom muaj cov abrasives muaj kev ua haujlwm ruaj khov thiab ua kom lawv muaj kev tiv thaiv kom tsis txhob muaj kev tiv thaiv.
Cov khoom siv hluav taws xob me me thiab cov morphology, hais txog cov theem kev ua si:
Los ntawm kev sib tsoo, kev tshuaj ntsuam thiab lwm yam kev ua haujlwm ntawm cov txheej txheem ntawm cov txheej txheem sib xyaw ntawm cov txheej txheem sib xyaw (P8) rau qhov nruab nrab thiab zoo} p400). Cov Abrasive Abrasology feem ntau yog elegology tsuas yog, nrog kev xav tau muaj zog, uas tuaj yeem ua tiav los ntawm kev ua kom muaj kev deburring, phaj ntxhib sib tsoo, thiab cov hlau profile kos duab. Nws txoj kev yoog tau deb tshaj li ntawm ib lub hom phiaj abrasives.
