Txog Silicon Carbide thiab SiC ceramics

Silicon Carbide muaj kev tiv thaiv zoo heev rau kev xeb, lub zog kho tshuab siab, kev ua haujlwm thermal siab, tus coefficient qis heev ntawm kev nthuav dav thermal, thiab kev tiv thaiv thermal zoo dua li alumincell uas muaj qhov kub siab heev. Silicon carbide yog tsim los ntawm tetrahedra ntawm cov pa roj carbon thiab silicon atoms nrog cov sib txuas muaj zog hauv cov lattice siv lead ua. Qhov no tsim cov khoom siv tawv thiab muaj zog heev. Silicon carbide tsis raug tawm tsam los ntawm cov kua qaub lossis alkalis lossis cov ntsev yaj txog li 800ºC. Hauv huab cua, SiC tsim cov txheej txheem tiv thaiv silicon oxide ntawm 1200ºC thiab siv tau txog li 1600ºC. Kev ua haujlwm thermal siab nrog rau kev nthuav dav thermal qis thiab lub zog siab muab cov khoom siv no tshwj xeeb tiv thaiv thermal poob siab zoo. Silicon carbide ceramics nrog me ntsis lossis tsis muaj cov khoom tsis huv ciam teb khaws lawv lub zog rau qhov kub siab heev, ze li ntawm 1600ºC tsis muaj kev poob zog. Kev ntshiab tshuaj lom neeg, kev tiv thaiv tshuaj lom neeg tawm tsam ntawm qhov kub thiab txias, thiab kev khaws cia lub zog ntawm qhov kub siab tau ua rau cov khoom siv no nrov heev ua cov tais wafer thiab paddles hauv cov cub tawg semiconductor. Kev siv hluav taws xob ntawm Thcell ua rau nws siv rau hauv cov khoom siv cua sov rau cov cub hluav taws xob, thiab ua ib qho tseem ceeb hauv thermistors (cov resistors hloov pauv kub) thiab hauv varistors (voltage hloov pauv resistors). Lwm yam kev siv suav nrog cov ntsej muag foob, cov phaj hnav, cov kabmob thiab cov raj liner.