Phello ea phekolo ea cryogenic ho microstructure ea carbide e entsoeng ka samente

Mekhoa e fapaneng ea cryogenic e baka liphetoho ho thepa eacarbide e entsoeng ka samente, 'me liphetoho tsa thepa li amana haufi-ufi le ho fetoha ha microstructure ea eona.Ka hona, hoa hlokahala ho hlahloba ka ho eketsehileng tšusumetso ea phekolo ea cryogenic ho microstructure ea carbide e entsoeng ka samente.

Microstructure e tloaelehileng ea WC-Co cemented carbide ke e latelang: mohato - WC (mohato o thata);β phase – Co (mohato o tlamang);y mohato - (TaC, TiC, NbC, WC) equicubic lattice e tsoakiloeng carbides;eta phase-decarburized phase (CoW, C, Co. W. C).Gill le ba bang.o fane ka setšoantšo sa moralo oa mekhahlelo ea a le β, joalokaha ho bontšitsoe setšoantšong sa 6. Har'a bona, α phase-WC (mohato o thata) o nka karolo e ka sehloohong hothepa ea carbide e samenteka sebopeho sa skeleton e thata, ha β phase-Co (mohato o kopanyang) e amana haufi-ufi le tungsten carbide (WC) joalo ka marang-rang.

Ha carbide e entsoeng ka samente e pholile ka mor'a ho sintering, kaha palo e kholo ea W le C e qhibiliha Co, karolo ea mocheso o phahameng oa α-Co mocheso oa kamore e ntse e le teng ka mokhoa o tsitsitseng.Ha mocheso o ntse o tsoela pele ho fokotseha, phetoho ea mohato oa martensitic ho tloha ho cubic α-Co e bohareng ba sefahleho ho ea ho e haufi-ufi ea hexagonal ε-Co e etsahala mokhahlelong oa bonding -Co.Ho ka bonoa hore ha mocheso o fetoha, ho na le liphetoho ho microstructure eacarbide e entsoeng ka samente, e fanang ka monyetla oa phekolo ea cryogenic ho khothalletsa phetoho ea mohato oacarbide e entsoeng ka samente.Liphuputso tse ngata li tsepamisitse maikutlo liphetohong tsa microstructure eacarbide e entsoeng ka samentepele le ka mor'a phekolo ea cryogenic le ho hlahloba mochine oa ho iphetola ha lintho tse nyenyane haholo ha thepa ea macroscopic e fetoha.