Saboda kyawawan halayensa na zahiri, an yi amfani da silicon carbide mai narkewa a cikin amsawa sosai a matsayin babban kayan sinadarai. Tsarin aikace-aikacensa yana da fannoni uku: don samar da abubuwan gogewa; Ana amfani da shi don samar da abubuwan dumama masu juriya - sandar silicon molybdenum, bututun silicon carbon, da sauransu; Don ƙera samfuran da ba su da juriya. A matsayin kayan da ba su da juriya na musamman, ana amfani da shi a cikin narkewar ƙarfe da ƙarfe kamar tanderun ƙarfe, cupola da sauran sarrafa tambari, lalatawa, lalacewar matsayin ƙarfi na samfuran da ba su da kariya daga wuta; A cikin ƙarfe mai wuya (zinc, aluminum, jan ƙarfe) masu narkewa don cajin tanderun narkewa, bututun jigilar ƙarfe mai narkewa, na'urar tacewa, tukunya mai matsewa, da sauransu; Da kuma fasahar sararin samaniya azaman bututun wutsiya na injin mai tambari, ruwan turbine na gas mai zafi mai ci gaba; A cikin masana'antar silicate, da yawa azaman nau'ikan rumfa na masana'antu, cajin tanderun nau'in akwati, saggar; A cikin masana'antar sinadarai, ana amfani da shi azaman samar da iskar gas, mai, mai, tanderun fitar da iskar gas da sauransu.
Amfani da kayayyakin ƙera α-SiC, saboda ƙarfinsa mai yawa, yana da matuƙar wahala a niƙa shi zuwa foda mai laushi na nanoscale, kuma barbashi faranti ne ko zare, waɗanda ake amfani da su don niƙawa cikin ƙaramin abu, ko da a cikin dumama zuwa zafin narkewarsa a kusa, ba zai samar da naɗewa a bayyane ba, ba za a iya niƙa shi ba, matakin yawan samfura yana da ƙasa, kuma juriya ga iskar shaka ba shi da kyau. Saboda haka, a cikin masana'antar samar da kayayyaki, ana ƙara ƙaramin adadin ƙwayar barbashi mai siffar β-SiC mai siffar ultrafine zuwa α-SiC da zaɓin ƙarin abubuwa don samun samfuran masu yawan yawa. A matsayin ƙari don haɗa samfura, bisa ga nau'in za a iya raba shi zuwa ƙarfe oxides, mahadi na nitrogen, graphite mai tsarki, kamar yumbu, aluminum oxide, zircon, zirconium corundum, foda lemun tsami, gilashin laminated, silicon nitride, silicon oxynitride, graphite mai tsarki da sauransu. Maganin ruwa na manne mai samar da shi zai iya zama ɗaya ko fiye na hydroxymethylcellulose, acrylic emulsion, lignocellulose, tapioca sitaci, aluminum oxide colloidal solution, silicon dioxide colloidal solution, da sauransu. Dangane da nau'in ƙari da bambancin adadin ƙari, zafin wuta na ƙaramin ba iri ɗaya bane, kuma kewayon zafin shine 1400 ~ 2300℃. Misali, α-SiC70% tare da rarraba girman barbashi fiye da 44μm, β-SiC20% tare da rarraba girman barbashi ƙasa da 10μm, yumbu 10%, da kuma maganin lignocellulosic 4.5% 8%, a gauraye daidai, an samar da shi tare da matsin aiki na 50MPa, an kunna shi a cikin iska a 1400℃ na tsawon awanni 4. Yawan samfurin shine 2.53g/cm3, porosity da aka bayyana shine 12.3%, kuma ƙarfin tensile shine 30-33mpa. An lissafa kaddarorin sintering na nau'ikan samfura da yawa tare da ƙari daban-daban a cikin Tebur 2.
Gabaɗaya, masu hana silicon carbide na sintering suna da kyawawan halaye masu inganci a kowane fanni, kamar ƙarfin matsewa mai ƙarfi, juriyar girgiza mai ƙarfi, juriya mai kyau ta lalacewa, ƙarfin watsa zafi da juriyar tsatsa mai ƙarfi a kan kewayon zafin jiki mai faɗi. Duk da haka, ya kamata a lura cewa rashin amfanin sa shine tasirin antioxidant ba shi da kyau, wanda ke haifar da faɗaɗa girma da nakasa a cikin yanayin zafi mai yawa don rage tsawon rayuwar sabis. Domin tabbatar da juriyar oxidation na masu hana silicon carbide na sintering, an yi ayyuka da yawa na zaɓi akan layin haɗin gwiwa. Aiwatar da yumbu (wanda ke ɗauke da ƙarfe oxides), amma bai samar da tasirin buffer ba, ƙwayoyin silicon carbide har yanzu suna fuskantar iskar shaka da tsatsa.
Lokacin Saƙo: Yuni-21-2023