Sic yumbura ba kawai suna da kyawawan kaddarorin inji a cikin zafin jiki ba, kamar ƙarfin lanƙwasawa, kyakkyawan juriya na iskar shaka, juriya mai kyau, juriya mai ƙarfi da ƙarancin juriya, amma kuma suna da mafi kyawun kaddarorin inji a babban zafin jiki (ƙarfi, juriya mai rarrafe). da dai sauransu) tsakanin sanannun kayan yumbura. Matsakaicin matsi mai zafi, sintirin da ba a latsawa ba, kayan matsi mai zafi mai zafi na isostatic, babban halayen silicon carbide shine ƙarfin zafin jiki, kayan yumbu na yau da kullun a 1200 ~ 1400 digiri Celsius za a ragu sosai, kuma silicon carbide a 1400 digiri Celsius ƙarfin lanƙwasawa. har yanzu ana kiyaye shi a matakin mafi girma na 500 ~ 600MPa, don haka zafin aiki zai iya kaiwa digiri 1600 Celsius; Silicon carbide farantin rubutu mai wuya da gaggautsa, haɓaka ƙima ƙarami ne, juriya mai sanyi da zafi, ba sauƙin lalacewa ba. Silicon carbide shine mafi ƙarancin girma, don haka sassan yumbura da aka yi da siliki carbide sune mafi sauƙi.
Alumina yumbu wani nau'i ne na alumina (Al2O3) a matsayin babban jikin kayan yumbu, wanda aka yi amfani da shi a cikin fim mai kauri wanda aka haɗa. Abubuwan yumbu na alumina suna da kyakkyawan aiki, ƙarfin injina da juriya mai zafi. Ya kamata a lura cewa ana buƙatar wankewar ultrasonic. Juriyar sawa shine sau 266 na ƙarfe na manganese da kuma sau 171.5 na babban simintin chromium. Alumina yumbu wani nau'i ne na kayan kwalliya mai inganci, wanda galibi ana amfani dashi don yin takaddar yumbu, zobe da sauran sassa. Alumina yumbu iya jure high zafin jiki har zuwa 1750 ℃ (alumina abun ciki fiye da 99%).
Lokacin aikawa: Fabrairu-14-2023