Ntsuab silicon carbide thiab dub silicon carbide: sib sib zog nqus sib txawv tshaj xim
Hauv kev lag luam loj ntawm cov khoom siv,ntsuab silicon carbidethiabdub silicon carbide feem ntau hais ua ke. Ob leeg yog ib qho tseem ceeb abrasives ua los ntawm high-temperature smelting nyob rau hauv kuj furnaces nrog raw cov ntaub ntawv xws li quartz xuab zeb thiab roj av coke, tab sis lawv qhov sib txawv yog ntau tshaj li qhov sib txawv xim ntawm qhov chaw. Los ntawm qhov sib txawv me ntsis hauv cov khoom siv raw, mus rau qhov tsis sib xws hauv cov yam ntxwv ntawm kev ua tau zoo, mus rau qhov sib txawv loj hauv kev siv cov xwm txheej, cov kev sib txawv no tau sib koom ua ke ua lub luag haujlwm tshwj xeeb ntawm ob qho tib si hauv kev lag luam.
1 Qhov sib txawv ntawm raw khoom purity thiab siv lead ua qauv txiav txim siab qhov sib txawv ntawm ob.
Ntsuab silicon carbideyog ua los ntawm roj av coke thiab quartz xuab zeb ua cov ntaub ntawv tseem ceeb, thiab ntsev ntxiv rau refining. Los ntawm cov txheej txheem no, cov ntsiab lus impurity tau txo qis mus rau qhov loj tshaj plaws, thiab cov siv lead ua yog cov kab ke tsis tu ncua hexagonal nrog cov npoo ntse thiab cov fab. Cov khoom siv raw ntawm cov xim dub silicon carbide yog qhov yooj yim, thiab tsis muaj ntsev ntxiv. Cov impurities xws li hlau thiab silicon tshuav nyob rau hauv cov ntaub ntawv raw ua rau nws cov khoom siv lead ua tsis xwm yeem nyob rau hauv cov duab thiab sib npaug thiab blunt ntawm cov npoo thiab cov ces kaum.
2 Qhov sib txawv ntawm cov khoom siv raw thiab cov qauv ua rau lub cev sib txawv ntawm ob qho tib si.
Nyob rau hauv cov nqe lus ntawm hardness, lub Mohs hardness ntawmntsuab silicon carbideyog hais txog 9.5, thib ob tsuas yog pob zeb diamond, thiab tuaj yeem ua cov ntaub ntawv hardness siab; dub silicon carbide yog hais txog 9.0, nrog ib tug me ntsis qis hardness. Hais txog qhov ntom ntom, ntsuab silicon carbide yog 3.20-3.25g / cm³, nrog cov qauv ntom ntom; dub silicon carbide yog 3.10-3.15g / cm³, kuj xoob. Nyob rau hauv cov nqe lus ntawm kev ua tau zoo, ntsuab silicon carbide muaj siab purity, zoo thermal conductivity, hluav taws xob conductivity thiab kub tsis kam, tab sis nws yog nkig thiab yooj yim rau tawg rau hauv cov npoo tshiab; dub silicon carbide muaj me ntsis qis thermal conductivity thiab hluav taws xob conductivity, tsis muaj brittleness, thiab muaj zog particle feem cuam tshuam.
3 Kev ua tau zoo sib txawv txiav txim siab qhov kev thov ntawm ob qho tib si.
Ntsuab silicon carbide muajsiab hardnessthiab cov khoom ntse, thiab yog qhov zoo ntawm kev ua cov khoom siv hardness thiab tsis tshua muaj zog: hauv cov khoom tsis yog xim hlau, nws tuaj yeem siv rau iav sib tsoo, ceramic txiav, semiconductor silicon wafers, thiab sapphire polishing; hauv kev ua hlau, nws muaj kev ua haujlwm zoo heev rau cov ntaub ntawv xws li cemented carbide thiab hardened steel, thiab yog dav siv hauv cov khoom xws li sib tsoo log thiab txiav discs. Dub silicon carbide feem ntau ua cov txheej txheem qis-hardness, cov ntaub ntawv muaj zog thiab tsim nyog rau kev ua cov hlau tsis-ferrous thiab cov ntaub ntawv refractory xws li cam khwb cia hlau, tooj liab thiab txhuas. Hauv cov xwm txheej ntxhib xws li deburring castings thiab xeb tshem tawm ntawm cov hlau, nws tau dhau los ua ib qho kev xaiv hauv kev lag luam vim nws cov nqi-zoo.
Txawm hais tias ntsuab silicon carbide thiabdub silicon carbidebelongs rau cov khoom siv silicon carbide, lawv lub cev thiab tshuaj lom neeg thiab cov yam ntxwv ntawm daim ntawv thov sib txawv heev. Nrog kev nruam tshiab ntawm cov ntaub ntawv tshawb fawb thiab kev siv thev naus laus zis, ntsuab silicon carbide thiab dub silicon carbide yuav tsum ua kom tiav daim ntawv thov nthuav dav hauv cov khoom siv thev naus laus zis xws li kev tsim khoom semiconductor, precision sib tsoo, thiab lub zog tshiab, muab cov khoom siv tseem ceeb rau kev loj hlob zoo ntawm kev lag luam niaj hnub.