Yumbu mai siffar silicon Carbide

Silicon carbide wani nau'in carbide ne na roba wanda ke da ƙwayar SiC. Idan aka kunna shi, yawanci ana samar da silica da carbon a yanayin zafi sama da 2000°C. Silicon carbide yana da yawan ka'ida na 3.18g/cm3, taurin Mohs wanda ke bin lu'u-lu'u, da kuma ƙaramin taurin 3300kg/mm3 tsakanin 9.2 da 9.8. Saboda tsananin taurinsa da juriyar sa, yana da halaye na juriyar zafin jiki mai yawa kuma ana amfani da shi don nau'ikan sassan injina masu juriyar sawa, masu juriyar tsatsa da kuma masu juriyar zafi mai yawa. Sabuwar nau'in fasahar yumbu ce mai juriyar sawa.

1, Sifofin sinadarai.

(1) Juriyar Iskar Oxidation: Lokacin da aka dumama kayan silicon carbide zuwa 1300 ° C a cikin iska, layin kariya na silicon dioxide zai fara samuwa a saman lu'ulu'u na silicon carbide. Tare da kauri na layin kariya, silicon carbide na ciki yana ci gaba da oxidize, don haka silicon carbide yana da kyakkyawan juriya ga iskar Oxidation. Lokacin da zafin jiki ya kai sama da 1900K (1627 ° C), fim ɗin kariya na silicon dioxide zai fara lalacewa, kuma iskar Oxidation na silicon carbide yana ƙaruwa, don haka 1900K shine zafin aiki na silicon carbide a cikin yanayin iskar Oxidation.

(2) Juriyar acid da alkali: saboda rawar da fim ɗin kariya na silicon dioxide ke takawa, silicon carbide yana da halaye a cikin rawar da fim ɗin kariya na silicon dioxide ke takawa.

2, Kayayyakin jiki da na inji.

(1) Yawan: Yawan barbashi na lu'ulu'u daban-daban na silicon carbide yana da kusanci sosai, galibi ana ɗaukarsa a matsayin 3.20g/mm3, kuma yawan marufi na halitta na abrasives na silicon carbide yana tsakanin 1.2-1.6g/mm3, ya danganta da girman barbashi, abun da ke cikin girman barbashi da siffar girman barbashi.

(2) Taurin: Taurin Mohs na silicon carbide shine 9.2, ƙaramin yawan Wessler shine 3000-3300kg/mm2, taurin Knopp shine 2670-2815kg/mm, abrasion ya fi corundum girma, kusa da lu'u-lu'u, cubic boron nitride da boron carbide.

(3) Tsarin watsa zafi: samfuran silicon carbide suna da babban ƙarfin watsa zafi, ƙaramin ƙarfin faɗaɗa zafi, babban juriya ga girgizar zafi, kuma kayan kariya ne masu inganci.

3, Kayan lantarki.