Silicon Carbide (SIC) ceramics hian characteristic tha tak tak an nei a, chungte chu oxidation resistance chak tak, wear resistance tha, thermal stability sang, temperature strength sang, thermal expansion sang tak, thermal conductivity sang, thermal shock resistance sang leh chemical corrosion resistance. te hi a ni a, chuvangin petroleum, chemical industry, machinery, aerospace, leh is as increatised a ni a, mi te tan a ni. SIC ceramics hi bearing hrang hrang, ball, nozzle, seal, cutting tools, gas turbine blade, turbocharger rotor, reflective screen leh rocket combustion chamber linings. atan hman theih a ni.
SIC ceramics property tha tak takte hi an structure danglam bik nen an inzawm tlat. SIC chu compound covalent bond chak tak nei a ni a, SIC-a SI-C bond ionicity chu 12%. vel chauh a ni a, chuvangin, SIC hian strength sang tak, elastic modulus lian tak leh wear resistance tha tak a nei a ni. PURE SIC-in a errode lo ang a, HFL leh HFL leh HFL te chu HNO3, hno3, hno3, HFL a ni ang a, HNo3, HFOL te chu HFOL te an ni lo ang. Alkali solutions te, NaOH. oxidation hi boruak a lum chuan a awm awlsam a, mahse a chung lama SiO2 siam chuan oxidation laiin oxygen diffusion dang a tikhawlo dawn a, chuvangin electrical property lam hawi chuan oxidation rate a sang lo., SIC IS semiconductor, leh impurity tha tak tak te chu conductivity tha tak a ni ang{{11} additional conductivity a nei ang a, additional te chu a tha hle ang.
SIC has leh crystal form pahnih. -SIC-a crystal structure chu cubic system a ni a, Si leh C te chuan face centered cubic lattice an siam a .SIC polytype 100 chuang a awm a, chungte chu 4H, 15R leh 6H te an ni a, chung zingah chuan 6H polytype hi industrial application-ah chuan a tam ber a ni. SIC chi hrang hrang 1600℃aia sang 1600℃a awm laiin 1600℃aia sang 1600℃a awm laiin thermal stability inzawmna engemaw zat a awm , .Sic chu zawi zawiin a inthlak a, .Sic polytype hrang hrangah a inthlak a, sic. 4h sic chu 2000℃vel ah chuan siam a awlsam a ; 15R leh 6H polytype pahnih hi 2100℃aia sang temperature sang takah siam awlsam a ni a ; 6H SIC tan chuan temperature 2200℃aia sang pawh nise . SIC-a polytype hrang hrangte free energies inthlauhna chu a tlem hle. Chuvangin, trace impurities solid solution chuan polytypes inkara thermal stability inzawmnaah pawh inthlak danglamna a thlen dawn a ni.
