Iimveliso zeCarbide eziQiniweyo zokuLungiselela iPowder yeTungsten

I-ultra-fine particle tungsten powder imnyama, i-particle finei-tungstenumgubo ungwevu bumnyama, kunye nesuntswana elirhabaxa le-tungsten engumgubo ongwevu kunye nokubengezela kwesinyithi.I-Metal tungsten powder inokuveliswa ngokunciphisa i-tungsten oxide.Iindlela eziphambili zokunciphisa i-hydrogen kunye nokunciphisa i-carbon.Okwangoku, indlela yokunciphisa i-hydrogen idla ngokusetyenziswa.Ubudlelwane be-hydrogen kunye ne-oksijini kumaqondo aphezulu aphezulu kunobudlelwane be-tungsten kunye ne-oxygen.Ngoko ke, i-tungsten trioxide iqala ukuncitshiswa yi-hydrogen kwi-380 ~ 400 ° C.IHydrojeni inokunciphisa i-tungsten dioxide ibetungsten powderngaphezu kwama-630°C.

.Itungsten powdereveliswa yindlela yokunciphisa i-hydrogen inobunyulu obuphezulu kwaye kulula ukulawula ubungakanani be-particle ye powder.Ukungabikho kwe-hydrogen, indlela yokunciphisa i-carbon nayo iyafumaneka.Inzuzo yengca eyomileyo kukuba i-carbon black ayibizi kwaye kulula ukuyifumana, kodwa ubungakanani bamasuntswana omgubo kunzima ukuwulawula.Kukho indlela yokunciphisa ixesha elilodwa lokunciphisa i-tungsten oxide kunye ne-hydrogen ukulungiselela i-tungsten powder, kwaye kukho indlela yokunciphisa izigaba ezininzi ezinciphisa kuqala i-WO3 kwi-WO2, kwaye emva koko iyanciphisa i-oxalic acid kuqala ukwenza i-w powder.Kwinkqubo yokuvelisa yangoku, i-tungsten powder idla ngokuveliswa yindlela yokunciphisa ngokuthe ngqo kwinqanaba elilodwa.

Ukongeza, kukho indlela yokunciphisa ngokuthe ngqo i-ammonium paratungstate ibe ngumgubo we-tungsten.Enye injongo ekhethekileyo ye-tungsten ikwalungiswa yindlela yokunciphisa i-halide.
Kukho kwakhona indlela ye-aluminothermic yokunciphisa umgubo we-ore kwaye uyilungiselele.Ukususela ngo-2000, inkqubo yokulungiselela i-ultrafine tungsten powder ngokunciphisa i-hydrogen ye-violet tungsten iye yakhuthazwa ngokubanzi.