Recrystallized Silicon Carbide (RXSIC, ReSIC, RSIC, R-SIC). Cov khoom siv pib yog silicon carbide. Tsis siv cov khoom pab kom ntom. Cov compacts ntsuab raug cua sov kom txog li 2200ºC rau kev sib sau ua ke zaum kawg. Cov khoom siv tau muaj li ntawm 25% porosity, uas txwv nws cov khoom siv kho tshuab; txawm li cas los xij, cov khoom siv tuaj yeem huv heev. Cov txheej txheem no pheej yig heev.
Cov Khoom Siv Reaction Bonded Silicon Carbide (RBSIC). Cov khoom siv raw pib yog silicon carbide ntxiv rau carbon. Cov khoom ntsuab ces raug infiltrated nrog molten silicon saum 1450ºC nrog cov tshuaj tiv thaiv: SiC + C + Si -> SiC. Lub microstructure feem ntau muaj qee qhov ntau ntawm silicon ntau dhau, uas txwv nws cov khoom kub siab thiab kev tiv thaiv corrosion. Kev hloov pauv me ntsis tshwm sim thaum lub sijhawm ua haujlwm; txawm li cas los xij, ib txheej ntawm silicon feem ntau muaj nyob rau ntawm qhov chaw ntawm qhov kawg. ZPC RBSiC tau txais yuav cov thev naus laus zis siab heev, tsim cov ntaub thaiv kev hnav tsis kam, phaj, vuas, cyclone lining, blocks, qhov tsis sib xws, thiab hnav & tiv thaiv corrosion FGD nozzles, cua sov exchanger, kav dej, raj, thiab lwm yam.
Nitride Bonded Silicon Carbide (NBSIC, NSIC). Cov khoom siv raw pib yog silicon carbide ntxiv rau silicon hmoov. Lub compact ntsuab raug hlawv hauv huab cua nitrogen qhov twg cov tshuaj tiv thaiv SiC + 3Si + 2N2 -> SiC + Si3N4 tshwm sim. Cov khoom siv kawg qhia me ntsis kev hloov pauv thaum lub sijhawm ua tiav. Cov khoom siv qhia qee qib ntawm porosity (feem ntau yog li 20%).
Direct Sintered Silicon Carbide (SSIC). Silicon carbide yog cov khoom siv raw pib. Cov khoom pab kom ntom yog boron ntxiv rau carbon, thiab kev ntom tshwm sim los ntawm cov txheej txheem tshuaj tiv thaiv khov kho saum 2200ºC. Nws cov khoom kub siab thiab kev tiv taus corrosion zoo dua vim tsis muaj theem thib ob iav ntawm cov ciam teb noob.
Cov Khoom Siv Ua Kua Sintered Silicon Carbide (LSSIC). Silicon carbide yog cov khoom siv raw pib. Cov khoom pab ua kom ntom yog yttrium oxide ntxiv rau aluminium oxide. Kev ntom tshwm sim saum 2100ºC los ntawm cov tshuaj tiv thaiv theem kua thiab ua rau theem ob zoo li iav. Cov khoom siv kho tshuab feem ntau zoo dua SSIC, tab sis cov khoom kub thiab kev tiv thaiv xeb tsis zoo.
Silicon Carbide Kub Nias (HPSIC). Hmoov silicon carbide yog siv ua cov khoom siv raw pib. Cov khoom pab kom ntom feem ntau yog boron ntxiv rau carbon lossis yttrium oxide ntxiv rau txhuas oxide. Kev ntom tshwm sim los ntawm kev siv lub zog thiab kub tib lub sijhawm hauv lub qhov tuag graphite. Cov duab yog cov phaj yooj yim. Cov khoom pab sintering me me tuaj yeem siv. Cov khoom siv kho tshuab ntawm cov khoom siv kub nias yog siv ua lub hauv paus uas piv rau lwm cov txheej txheem. Cov khoom hluav taws xob tuaj yeem hloov pauv los ntawm kev hloov pauv hauv cov khoom pab kom ntom.
CVD Silicon Carbide (CVDSIC). Cov khoom no yog tsim los ntawm cov txheej txheem chemical vapor deposition (CVD) uas muaj cov tshuaj tiv thaiv: CH3SiCl3 -> SiC + 3HCl. Cov tshuaj tiv thaiv yog ua tiav hauv qab huab cua H2 nrog SiC raug tso rau ntawm cov graphite substrate. Cov txheej txheem ua rau cov khoom siv huv heev; txawm li cas los xij, tsuas yog cov phaj yooj yim xwb thiaj ua tau. Cov txheej txheem kim heev vim tias lub sijhawm tiv thaiv qeeb.
Cov Tshuaj Lom Zem Sib Xyaws Silicon Carbide (CVCSiC). Cov txheej txheem no pib nrog cov khoom siv graphite uas tau tsim tshwj xeeb uas tau ua tiav rau hauv cov duab ze-net hauv lub xeev graphite. Cov txheej txheem hloov pauv no ua rau cov khoom siv graphite raug rau hauv qhov chaw ua pa hauv cov khoom khov kho kom tsim tau cov polycrystalline, stoichiometrically raug SiC. Cov txheej txheem tswj hwm nruj no tso cai rau cov qauv tsim nyuaj kom tsim tau hauv cov khoom siv SiC uas tau hloov pauv tag nrho uas muaj cov yam ntxwv ua siab ntev thiab muaj kev ntshiab siab. Cov txheej txheem hloov pauv no ua rau lub sijhawm tsim khoom luv dua thiab txo cov nqi dua lwm txoj hauv kev. * Qhov chaw (tshwj tsis yog qhov twg tau sau tseg): Ceradyne Inc., Costa Mesa, Calif.
Lub sijhawm tshaj tawm: Lub Rau Hli-16-2018