Tasirin maganin cryogenic akan microstructure na simintin carbide

Daban-daban hanyoyin cryogenic suna haifar da canje-canje a cikin kaddarorinsiminti carbide, kuma canje-canje a cikin kaddarorin suna da alaƙa da alaƙa da juyin halittar ƙananan ƙwayoyin cuta.Sabili da haka, ya zama dole don ƙarin nazarin tasirin maganin cryogenic akan microstructure na simintin carbide.

Halin microstructure na WC-Co cemented carbide shine kamar haka: wani lokaci - WC (lokaci mai wuya);β lokaci - Co (lokacin ɗaure);y lokaci - (TaC, TiC, NbC, WC) equicubic lattice gauraye carbide;eta lokaci-decarburized lokaci (CoW, C, Co.W.C).Gill et al.ya ba da zane-zane na tsarin a da β, kamar yadda aka nuna a cikin Hoto 6. Daga cikin su, α phase-WC (hard phase) ya mamaye babban sashi a cikinsiminti carbide abua cikin nau'i na kwarangwal mai tsauri, yayin da β-phase-Co (lokacin ɗaure) yana da alaƙa da kusanci da tungsten carbide (WC) kamar grid.

Lokacin da aka sanyaya carbide da aka yi da siminti bayan an haɗa shi, tun da yawan adadin W da C suna narkar da su a cikin Co, babban yanayin zafin jiki na α-Co a cikin ɗaki har yanzu yana nan a tsaye.Lokacin da zafin jiki ya ci gaba da raguwa, canjin lokaci na martensitic daga cubic cubic α-Co zuwa kusa-cubic hexagonal ε-Co yana faruwa a lokacin haɗin gwiwa -Co.Ana iya ganin cewa lokacin da zafin jiki ya canza, akwai canje-canje a cikin microstructure nasiminti carbide, wanda ke ba da yiwuwar maganin cryogenic don inganta canjin lokaci nasiminti carbide.Yawancin karatu sun mayar da hankali kan canje-canje a cikin microstructure nasiminti carbidekafin da kuma bayan maganin cryogenic da kuma bincika tsarin juyin halitta na microscopic lokacin da kaddarorin macroscopic suka canza.