Reaction sintering silicon carbide hanya ce mai mahimmanci don samar da manyan kayan yumbura. Wannan hanya tana amfani da maganin zafi na carbon da tushen silicon a yanayin zafi mai zafi don sanya su amsa don samar da yumbu na silicon carbide.
1. Shirye-shiryen albarkatun kasa. Abubuwan da ake amfani da su na silicon carbide mai amsawa sun haɗa da tushen carbon da tushen silicon. Tushen carbon yawanci baƙar fata ne ko kuma polymer mai ɗauke da carbon, yayin da tushen siliki ɗin silica ne. Waɗannan albarkatun ƙasa suna buƙatar murkushe su, a tantance su da kuma gauraya su don tabbatar da girman ɓangarorin iri ɗaya, yayin da kuma suke sarrafa abubuwan sinadaran su don samun ingantattun yumbu na silicon carbide yayin jiyya na zafi.
2. Siffar. Saka gauraye albarkatun ƙasa a cikin gyare-gyaren gyare-gyare don yin gyare-gyare. Akwai nau'ikan hanyoyin gyare-gyare da yawa, waɗanda aka fi amfani da su sune gyare-gyaren latsa da gyare-gyaren allura. Yin gyare-gyaren latsa shine matsewar ɗanyen foda a ƙarƙashin matsin lamba don samarwa, yayin da yin gyare-gyaren allura shine ɗanyen kayan da aka gauraye da abin ɗamara, ana fesa shi a cikin ƙwanƙolin ta hanyar sirinji don samarwa. Bayan kafa, wajibi ne don aiwatar da maganin lalata don cire yumburan yumbu daga mold.
3. Maganin zafi. An sanya jikin yumbura da aka kafa a cikin tanderun maganin zafi don sintiri. An raba tsarin sintering zuwa matakai biyu: matakin carbonization da matakin sintering. A cikin matakin carbonization, jikin yumbura yana mai zafi zuwa babban zafin jiki (yawanci sama da 1600 ° C) a ƙarƙashin yanayi mara kyau, kuma tushen carbon yana amsawa tare da tushen silicon don samar da silicon carbide. A cikin matakin sintering, ana ɗaga zafin jiki zuwa mafi girman zafin jiki (yawanci sama da 1900 ° C), wanda ke haifar da recrystallization da haɓakawa tsakanin ƙwayoyin siliki carbide. Ta wannan hanyar, yawan ƙwayar siliki carbide yana ƙara haɓaka, yayin da taurin da juriya kuma ana inganta su sosai.
4. Ƙarshe. Jikin yumbun da aka ƙera yana buƙatar ƙare don samun siffar da girman da ake so. Hanyoyin gamawa sun haɗa da niƙa, yankan, hakowa, da dai sauransu Saboda tsananin tsananin ƙarfi na silicon carbide abu, yana da wuyar gamawa, yana buƙatar yin amfani da kayan aikin niƙa mai mahimmanci da kayan aiki.
A taƙaice, tsarin samar da sinadarin silicon carbide mai amsawa ya haɗa da shirye-shiryen albarkatun ƙasa, gyare-gyare, magani mai zafi da ƙarewa. Daga cikin su, mahimmin mataki shine tsarin kula da zafi, wanda yake kula da shi yana da mahimmanci don samun kayan aikin silicon carbide masu inganci. Wajibi ne don sarrafa yanayin zafi, yanayi, lokacin riƙewa da sauran dalilai na maganin zafi don tabbatar da cewa abin da ya dace ya isa, crystallization ya cika kuma yawancin yana da girma.
Amfanin tsarin samar da siliki carbide mai amsawa-sintered shine cewa ana iya shirya kayan yumbu tare da babban taurin, babban ƙarfi, juriya mai ƙarfi da kwanciyar hankali mai zafi. Wannan abu ba wai kawai yana da kyawawan kayan aikin injiniya ba, amma har ma yana da kyakkyawan juriya na lalata da kuma yawan zafin jiki. Ana iya amfani da kayan siliki na carbide don kera sassan injiniya daban-daban, hatimin injin, na'urorin kula da zafi, yumbun tanderu da sauransu. A lokaci guda kuma, ana iya amfani da kayan silicon carbide a cikin semiconductor, makamashin hasken rana, kayan maganadisu da sauran fannoni.
A takaice, amsawar siliki carbide shine hanya mai mahimmanci don shirya manyan kayan yumbura. Tsarin samarwa yana buƙatar kulawa mai kyau na kowane hanyar haɗin gwiwa don samun ingantaccen kayan siliki carbide. Abubuwan da aka yi amfani da su na silicon carbide suna da kyawawan kaddarorin inji, juriya na lalata da kaddarorin zafin jiki, kuma suna da fa'idodin aikace-aikace a fannonin masana'antu da kimiyya daban-daban.
Lokacin aikawa: Yuli-21-2023