Qhov sib txawv tseem ceeb ntawm silicon carbide thiab boron carbide yog tias silicon carbide muaj ib qho silicon atom sib txuas rau ib qho carbon atom, whereas boron carbide muaj plaub boron atoms bonded rau ib carbon atom.
Ob leeg silicon carbide thiab boron carbide yog cov khoom sib xyaw ua ke. Ob qho no yog cov khoom siv tawv heev. Lawv muaj cov tshuaj lom neeg thiab lub cev sib txawv.
Silicon Carbide yog dab tsi?
Silicon carbide yog cov khoom siv semiconductor muaj li ntawm silicon thiab carbon atoms. Cov tshuaj formula ntawm no compound yog SiC. Yog li ntawd, nws muaj ib tug silicon atom bonded rau ib tug carbon atom ntawm covalent tshuaj bonding. Cov khoom no tseem hu ua carborundum thiab nws tshwm sim nyob rau hauv cov xwm nyob rau hauv daim ntawv ntawm moissanite, ib tug tsis tshua muaj mineral ntxhia. Yog li ntawd, silicon carbide feem ntau yog ua los ntawm cov khoom siv hluavtaws.
Daim duab 01: Silicon Carbide
Cov molar loj ntawm silicon carbide yog 40 g / mol. Cov khoom no zoo li xiav-dub, iridescent siv lead ua qauv, tab sis daim ntawv ntshiab yog xim tsis muaj xim. Cov xim dub yog vim muaj hlau ua ib qho impurity. Ntxiv mus, nws yog insoluble nyob rau hauv dej tab sis soluble nyob rau hauv molten hlau thiab molten alkalis. Txawm li cas los xij, peb tuaj yeem nrhiav silicon carbide hauv li 250 siv lead ua cov ntaub ntawv. Cov tshuaj no qhia tau hais tias polymorphism. Ntawm no, alpha silicon carbide yog cov feem ntau thiab ruaj khov daim ntawv. Nws tsim ntawm qhov kub siab heev thiab nws muaj cov qauv siv lead ua hexagonal.
Muaj ntau yam kev siv silicon carbide. Feem ntau, nws yog ib qho tseem ceeb ua ib qho abrasive thiab hauv kev tsim cov cuab yeej txiav. Nws kuj yog ib qho tseem ceeb ntawm cov khoom siv. E.g. Nyob rau hauv cov khoom sib xyaw ua ke, nyob rau hauv ceramic plated bulletproof vests, high-temperature kilns, thiab lwm yam. Tsis tas li ntawd, silicon carbide muaj txiaj ntsig zoo hauv kev tsim cov tsheb thiab ua cov khoom siv semiconductor.
YBoron Carbide yog dab tsi?
Boron carbide yog cov khoom siv tawv heev uas muaj boron thiab carbon atoms. Cov tshuaj formula ntawm no compound yog B4C. Yog li ntawd, nws muaj plaub boron atoms sib txuas rau ib qho carbon atom. Nws tsuas yog thib peb rau pob zeb diamond thiab cubic boron nitride nyob rau hauv nws hardness. Yog li ntawd, nws tseem hu ua "dub pob zeb diamond".
Daim duab 02: Boron Carbide
Cov molar loj ntawm boron carbide yog 55.25 g / mol. Nws zoo nkaus li grey tsaus lossis dub hmoov lossis siv lead ua. Nws yog insoluble hauv dej. Cov khoom no yog paub zoo rau nws cov hardness siab, siab cross-section rau neutron absorption, siab stability ntawm ionizing hluav taws xob, thiab lwm yam. Ntxiv mus, nws muaj semiconductor zog. Rau qhov no, cov khoom hluav taws xob ntawm boron carbide yog dominated los ntawm hopping-hom thauj. Feem ntau, nws yog ntawm p-hom semiconductor.
Boron carbide yog cov khoom siv hluavtaws. Nws tuaj yeem npaj tau los ntawm kev txo qis ntawm boron trioxide rau hauv boron carbide nyob rau hauv muaj cov pa roj carbon. Cov tshuaj tiv thaiv no xav tau cov pa roj carbon lossis magnesium ua tus neeg sawv cev txo qis.
Qhov txawv ntawm Silicon Carbide thiab Boron Carbide yog dab tsi?
Qhov sib txawv tseem ceeb ntawm silicon carbide thiab boron carbide yog tias silicon carbide muaj ib qho silicon atom sib txuas rau ib qho carbon atom whereas boron carbide muaj plaub boron atoms sib koom ua ke rau ib qho carbon atom. Silicon carbides yog xiav-dub crystals thaum boron carbides yog tsaus grey lossis dub crystals.
Cov lus qhia hauv qab no qhia txog qhov sib txawv ntawm silicon carbide thiab boron carbide.
Summary - Silicon Carbide vs Boron Carbide
Ob leeg silicon carbide thiab boron carbide yog cov khoom sib xyaw ua ke. Lawv muaj cov tshuaj lom neeg thiab lub cev sib txawv. Qhov sib txawv tseem ceeb ntawm silicon carbide thiab boron carbide yog tias silicon carbide muaj ib qho silicon atom sib txuas rau ib lub atom carbon, whereas boron carbide muaj plaub boron atoms bonded rau ib carbon atom.
