Cobalt Chromium Alloy hmoov

khoom piav qhia

Cobalt puag alloy hmoov
Cobalt puag alloys feem ntau muaj tungsten thiab carbon rau ntxiv dag zog. Cov pa roj carbon muaj cov khoom solubility tsawg hauv cobalt thiab yog li ntawd, feem ntau ntawm nws partitions nyob rau hauv WC, W2C thiab M6C los yog lwm yam carbides. Cov theem nyuaj no muaj kev txhawb zog, ua rau cov hlau no muaj zog thiab muaj zog ntawm qhov kub ntawm 800 ° C. Cov cobalt-chromium-tung-sten-carbon alloys feem ntau muaj cov khoom zoo heev los tiv thaiv kev kub siab, oxidation thiab thermal qaug zog Cobalt muaj hexagonal-kaw-packed (hcp) siv lead ua qauv ntawm qhov kub hauv qab 417 ° C. Intrinsically, nws muaj tsawg coefficient ntawm kev sib txhuam uas ua rau zoo heev hnav tsis kam. Ntawm qhov kub siab tshaj 417 ° C, cobalt hloov los ntawm hcp mus rau fcc (lub ntsej muag-centered-cubic) siv lead ua qauv, yog li, ua kom muaj kev ntxhov siab thermal. Yog li ntawd, nws raug pom zoo tias nyob rau hauv weld overlaying thiab txau, cov khoom uas tau coated yog pre-rhuab mus rau 500-600 ° C kom tsis txhob tawg nyob rau hauv lub txheej los yog overlay.

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