Ko nga momo tukanga cryogenic ka huri i nga ahuatanga ocarbide sima, me nga huringa i roto i nga taonga e tata ana ki te kukuwhatanga o tona hanganga moroiti.Na reira, he mea tika ki te tātari i te awe o te maimoatanga cryogenic ki te microstructure o te carbide cimented.
Ko te hanganga moroiti angamaheni o WC-Co carbide cimented e whai ake nei: he wahanga – WC (waahanga pakeke);wahanga β – Co (waahanga here);y wāhanga – (TaC, TiC, NbC, WC) kurupae equicubic carbide whakauru;eta wahanga-decarburized wahanga (CoW, C, Co. W. C).Gill et al.i hoatu he hoahoa hoahoa o nga wahanga a me te β, penei i te Whakaaturanga 6. I roto i era, ko te α-waahanga-WC (waahanga pakeke) e noho ana i te waahanga matua o tenga mea carbide cimentedi roto i te ahua o te kohiwi maro, i te wa e hono tata ana te wahanga β-Co (waahanga here) ki te tungsten carbide (WC) ano he matiti.
Ina whakamataohia te carbide cimented i muri i te whakangao, i te mea he nui te W me te C kua memeha ki Co, ka mau tonu te wahanga pāmahana teitei α-Co i te pāmahana rūma.Ka heke haere tonu te pāmahana, ka puta te huringa wahanga martensitic mai i te mata-pokapū pūtoru α-Co ki kati-Kikī hexagonal ε-Co ka puta i roto i te wahanga hono -Co.Ka taea te kite ka huri te pāmahana, ka rereke te hanganga moroiti ocarbide sima, e whakarato ana i te whai waahi mo te maimoatanga cryogenic ki te whakatairanga i te huringa wahanga ocarbide sima.He maha nga rangahau i aro ki nga huringa o te hanganga moroiti ocarbide simai mua, i muri hoki i te maimoatanga cryogenic me te tirotiro i te tikanga kukuwhatanga moroiti ina huri nga ahuatanga macroscopic.
Te wa tuku: Maehe-06-2024
