Silicon Carbide muaj kev tiv thaiv zoo heev rau corrosion, siab mechanical zog, siab thermal conductivity, tsis tshua muaj coefficient ntawm thermal expansion, thiab zoo thermal shock tsis kam tshaj alumincell namet kub heev. Silicon carbide yog tsim los ntawm tetrahedra ntawm carbon thiab silicon atoms nrog muaj zog bonds nyob rau hauv lub siv lead ua lattice. Qhov no tsim cov khoom siv tawv heev thiab muaj zog. Silicon carbide tsis tawm tsam los ntawm cov kua qaub lossis alkalis lossis cov ntsev ntsev mus txog 800ºC. Nyob rau hauv huab cua, SiC tsim ib qho kev tiv thaiv silicon oxide txheej ntawm 1200ºC thiab tuaj yeem siv mus txog 1600ºC. Lub siab thermal conductivity ua ke nrog qis thermal expansion thiab siab zog muab cov khoom no tshwj xeeb thermal shock resistant zoo. Silicon carbide ceramics nrog me me los yog tsis muaj grain ciam impurities tswj lawv lub zog mus rau qhov kub thiab txias, nce mus txog 1600ºC tsis muaj zog poob. Tshuaj purity, tsis kam mus tshuaj tua kab mob ntawm qhov kub thiab txias, thiab lub zog tuav ntawm qhov kub thiab txias tau ua rau cov khoom no nrov heev li wafer tais txhawb thiab paddles hauv semiconductor furnaces. Thcell namelectrical conduction ntawm cov khoom siv tau ua rau nws siv rau hauv cov cua kub tsis kam rau cov hluav taws xob hluav taws xob, thiab ua cov khoom tseem ceeb hauv cov thermistor (kub kuj sib txawv ntawm cov resistors) thiab hauv varistors (voltage variable resistors). Lwm daim ntawv thov muaj xws li foob ntsej muag, hnav daim hlau, bearings thiab liner raj.
Post lub sij hawm: Jun-05-2018