Bayani na Gabaɗaya game da Reaction Bonded SiC

Janarbayani game daMartaniSiC mai ɗaurewa

Reaction Bonded SiC yana da kaddarorin injiniya da juriya ga iskar shaka. Farashinsa yana da ƙasa kaɗan. A cikin al'ummar da ke cikin wannan zamani, ya jawo hankali sosai a masana'antu daban-daban.

SiC yana da ƙarfi sosai a cikin haɗin covalent. A cikin sintering, ƙimar watsawa yana da ƙasa sosai. A lokaci guda, saman barbashi galibi yana rufe wani siririn Layer na oxide wanda ke taka rawar shingen watsawa. Pure SiC ba shi da sintering kuma yana da ƙanƙanta ba tare da ƙarin sintering ba. Ko da an yi amfani da tsarin matsewa mai zafi, dole ne ya zaɓi ƙarin da ya dace. Sai a yanayin zafi mai yawa, za a iya samun kayan da suka dace da yawan injiniya kusa da yawan ka'ida waɗanda ya kamata su kasance a cikin kewayon daga 1950 ℃ zuwa 2200 ℃. A lokaci guda, siffarsa da girmansa za su iyakance. Kodayake ana iya samun haɗin SIC ta hanyar ajiyar tururi, an iyakance shi ga shirya ƙananan yawa ko kayan Layer siriri. Saboda tsawon lokacin shiru, farashin samarwa zai ƙaru.

An ƙirƙiro Reaction Bonded SiC a shekarun 1950 ta hannun Popper. Babban ƙa'idar ita ce:

A ƙarƙashin aikin ƙarfin capillary, silicon mai ruwa ko silicon gami da aikin amsawa yana shiga cikin yumbu mai ramuka waɗanda ke ɗauke da carbon da carbon silicon da aka samar a cikin amsawar. An haɗa sabon silicon carbide da ainihin ƙwayoyin silicon carbide a wurin, kuma ragowar ramuka a cikin cikawar ana cika su da sinadarin da ke haifar da danshi don kammala aikin danshi.

Idan aka kwatanta da sauran hanyoyin yin amfani da yumburan silicon carbide, tsarin yin sintering yana da halaye masu zuwa:

Ƙananan zafin aiki, ɗan gajeren lokacin aiki, babu buƙatar kayan aiki na musamman ko tsada;

Sassan da aka haɗa da martani ba tare da raguwa ko canjin girma ba;

Hanyoyi daban-daban na ƙera abubuwa (extrusion, allura, matsi da zubawa).

Akwai ƙarin hanyoyi don siffantawa. A lokacin simintin, ana iya samar da manyan kayayyaki da samfura masu rikitarwa ba tare da matsi ba. An yi nazarin fasahar Reaction Bonded ta silicon carbide tsawon rabin ƙarni. Wannan fasaha ta zama ɗaya daga cikin abubuwan da masana'antu daban-daban suka mayar da hankali a kai saboda fa'idodinta na musamman.