Reaction-sintered silicon carbide ain yana da kyau matsawa ƙarfi a yanayi zafin jiki, zafi juriya ga iskar shaka iskar shaka, mai kyau lalacewa juriya, mai kyau zafi juriya, kananan coefficient na mikakke fadada, high zafi canja wurin coefficient, high taurin, zafi juriya da lalata, wuta rigakafin da kuma sauran halaye masu inganci. An yi amfani da shi sosai a cikin motoci, sarrafa injina, kariyar muhalli, injiniyan sararin samaniya, na'urorin lantarki da ke cikin bayanai, makamashin wutar lantarki da sauran fagage, ya zama yumbun tsari mai tsada kuma wanda ba za a iya maye gurbinsa ba a fannonin masana'antu da yawa.
An san matsi mara ƙarfi azaman hanyar ƙididdigewar SiC. Don injunan simintin gyare-gyare daban-daban, za a iya raba sintering mara latsa zuwa ƙayyadaddun ƙididdiga na lokaci da ƙayyadaddun ƙayyadaddun aikin ruwa lokaci. Ta hanyar ƙara dacewa B da C (abincin oxygen ƙasa da 2%) tare a cikin kyakkyawan beta SiC foda, S. Proehazka an haɗa shi cikin jikin SIC calcined tare da dangi mai yawa fiye da 98% a 2020, tare da Al2O3 da Y2O3 kamar yadda additives. Calcined 0.5m-SiC a karkashin 1850-1950 (barbashi saman tare da kadan SiO2), ƙarshe shi ne cewa yawa na SiC ain ya wuce 95% na asali ka'idar yawa, da hatsi size ne kananan, kuma matsakaicin girman ne babba, wanda. 1.5 μm.
Reactive sintering silicon carbide yana nufin gaba dayan aiwatar da nuna porous tsarin billet tare da ruwa lokaci ko babban aikin ruwa lokaci, inganta ingancin billet, rage huda rami, da calcining ƙãre samfurin tare da wani ƙarfi da girma daidaito. Plutonium-sic foda da high tsarki graphite ana gauraye su a wani kaso kuma mai zafi zuwa kusan 1650 don samar da tayin gashi. A lokaci guda, yana shiga ko shiga cikin ƙarfe ta hanyar ruwa lokaci Si, yana nunawa tare da silicon carbide don samar da plutonium-sic, kuma yana haɗawa da ƙwayoyin plutonium-sic. Bayan shigar da ciki, za'a iya samun amsawar jiki tare da cikakken girman dangi da girman da ba a tattara ba. Idan aka kwatanta da sauran sintering hanyoyin, a kan aiwatar da babban yawa dauki sintering size canji ne in mun gwada da kananan, iya haifar da daidai girman kaya, amma akwai mai yawa SiC a kan calcined jiki, da high zafin jiki halaye na dauki sintered SiC ain. zai zama mafi muni. SiC ceramics ɗin da ba a matsa lamba ba, yumbun SiC mai zafi mai zafi da yumbu na SiC wanda ba ya da ƙarfi yana da halaye daban-daban.
Masu kera silicon carbide mai amsawa: Misali, SiC porcelain a matakin ƙarancin ƙarancin dangi da ƙarfin lanƙwasawa, matsi mai zafi da latsawa mai zafi mai zafi sun fi yawa, kuma Sintering SiC yana da ƙasa kaɗan. A lokaci guda, kaddarorin zahiri na SiC porcelain suna canzawa tare da canjin calcination modifier. Rashin matsi mara ƙarfi, zazzagewar latsa mai zafi da amsawa na SiC porcelain suna da juriya mai kyau na alkaline da juriya na acid, amma amsawar SiC mai ƙarancin ƙarfi yana da raunin juriya ga HF da sauran lalatawar acid mai ƙarfi. Lokacin da yanayin zafin jiki bai wuce 900 ba, ƙarfin lanƙwasawa na mafi yawan SiC porcelain yana da girma fiye da na babban ain zafin jiki mai zafi, kuma ƙarfin lanƙwasawa na sintered sintered na SiC yana faɗuwa sosai lokacin da ya wuce 1400. (Wannan ana haifar da shi kwatsam. sauke ƙarfin lanƙwasawa na wani adadin laminated SiC fiye da wani zafin jiki a jikin da aka kayyade sintered ba tare da matsi calcination kuma karkashin zafi akai-akai matsa lamba ne yafi shafar iri Additives.
Lokacin aikawa: Nuwamba-07-2023