Cobalt alloys

Classified los ntawm kev siv,cobalt-raws li alloystuaj yeem muab faib ua cobalt-raws li hnav- cov alloys resistant, cobalt-raws siab- kub alloys, thiab cobalt-raws li coj-resistant thiab aqueous tov corrosion alloys.

Raws li kev ua haujlwm ib txwm muaj, qhov tseeb, lawv yog ob qho tib si hnav-tiv taus, siab- kub resistant, lossis hnav- tiv taus thiab corrosion- tiv taus. Qee qhov kev ua haujlwm kuj tseem yuav xav tau siab- kub, hnav- tiv taus, thiab corrosion- cov ntaub ntawv tiv taus tib lub sijhawm. Hauv qee qhov xwm txheej, qhov ntau nws tuaj yeem cuam tshuam qhov zoo ntawm cobalt-raws li alloys.

Cov qib raug cobalt-raws li kub kub alloys yog: Haynes 188, Haynes 25 (L-605), Alloy S-816, UMCo-50, MP-159, FSX-414, X-40,Stellite, lwm.
Suav qib yog: GH5188 (GH188), GH159, GH605, K640, DZ40M thiab hais txog. Sib txawv los ntawm lwm cov superalloys, cobalt-raws li superalloys tsis tau ntxiv dag zog los ntawm ib qho kev txiav txim nag lossis daus theem ruaj khov rau cov matrix, tab sis yog tsim los ntawm austenite fcc matrix uas tau ua cov tshuaj muaj zog ntxiv thiab me me ntawm carbides faib rau hauv matrix.
Casting cobalt-raws li superalloys cia siab rau carbide ntxiv dag zog. Ntshiab cobalt crystals muaj hexagonal ze- ntim (hcp) siv lead ua qauv hauv qab 417℃thiab hloov mus rau fcc ntawm qhov kub siab dua. Txhawm rau zam qhov kev hloov pauv no thaum siv cobalt-raws li superalloys, xyaum tag nrho cov cobalt-raws li alloys yog alloyed nrog npib tsib xee kom stabilize tus qauv ntawm chav tsev kub mus rau lub melting point.
Cobalt-raws li cov alloys muaj qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm qhov kub thiab txias, tab sis lawv qhia tau zoo dua thermal corrosion dua li lwm cov alloys siab tshaj 1000 degree. Qhov no tej zaum yuav yog vim muaj cov ntsiab lus chromium ntau dua ntawm cov hlau, uas yog qhov tseem ceeb tshaj plaws ntawm cov hlau no.