Silicon carbide (SiC) ceramics have excellent properties such as strong oxidation resistance, good wear resistance, high hardness, good thermal stability, high temperature strength, small thermal expansion coefficient, high thermal conductivity, thermal shock resistance and chemical corrosion resistance. Therefore, it has shown its talents in the fields of petroleum, chemical industry, machinery, aerospace, nuclear energy, etc., and has been paid more and more attention by Abantu. Okugeza, sic ceramics zisobola okukozesebwa nga bbeeri ez’enjawulo, emipiira, entuuyo, ebisiba, ebikozesebwa mu kusala, ebiwujjo bya ggaasi, ebiwujjo bya turbocharger, ebipande ebitangaaza, n’ebiwujjo eby’okwokya omuzinga, n’ebirala.
The excellent properties of SiC ceramics are closely related to their unique structure. SiC is a compound with strong covalent bonds, and the ionicity of Si-C bonds in SiC is only about 12%. Therefore, SiC has high strength, large elastic modulus, and excellent wear resistance. Pure SiC will not be attacked by acid solutions such as HCl, HNO3, H2SO4 and HF, Era solutions za alkaline nga NaOH. kyangu okufuuka oxidization nga kibuguma mu mpewo, naye SIO2 ekolebwa ku ngulu mu kiseera ky’okwokya kijja kuziyiza okusaasaana okulala okwa oxygen, kale oxidation rate si waggulu. mu ngeri y’ebintu eby’amasannyalaze, sic 11} stemicing, era okuyingizaamu omuwendo omutono ogw’obucaafu kijja kulaga bulungi chormertivity {{1} smeters, smeters} salthrys shancelities {1} smeters {1} smeters smert. Obutambuzi. .
SiC erina ebifaananyi bibiri ebya kirisitaalo, ate . ensengekera ya kirisitaalo ya -sic ye kiyubiki, ate SI ne C zikola ekintu ekiyitibwa cubic lattice ekiri wakati wa ffeesi; -SIC erina polytypes ezisukka mu 100 nga 4h, 15R, ne 6H, nga mu zino 6H polytype ekozesebwa mu makolero okukozesa. ekisinga okumanyibwa. waliwo enkolagana y’obutebenkevu bw’ebbugumu erimu wakati w’ebika eby’enjawulo ebya sic. nga ebbugumu eri wansi eri wansi okusinga 1600℃, sic eriwo mu sic eri mu ffoomu mu ffoomu mu ffoomu eri ekikula kya 14} nga 1600℃, sic ebeerawo mu ffoomu mu ffoomu mu ffoomu eri mu ffoomu eri mu ffoomu eri wansi wa 100, sic 100, sc 1600℃, -sic ekyuka mpola mu polytypes ezenjawulo eza -sic. 4H-sic kyangu okukola ku 2000℃; 15R ne 6H polytypes nnyangu okukola ku bbugumu erya waggulu erisukka 2100℃; Ku 6H-SIC, ne bwe kiba nti ebbugumu lisukka 2200℃, libeera nnywevu nnyo. enjawulo y’amasoboza ag’eddembe wakati wa polytypes ez’enjawulo mu SiC mutono nnyo. n’olwekyo, ekisengejjero ekigumu eky’obucaafu bw’okulondoola nakyo kisobola okuleeta enkyukakyuka mu nkolagana y’obutebenkevu bw’ebbugumu wakati wa polytypes.
