Cobalt yog ib qho ci iab hlau-grey hlau, kuj nyuaj thiab nkig, ferromagnetic, thiab zoo ib yam li hlau thiab npib tsib xee hauv hardness, tensile zog, txhua yam khoom, thermodynamic zog, thiab electrochemical cwj pwm.Cov hlau nplaum ploj thaum rhuab mus rau 1150 ℃.Cov hmoov hlau zoo cobalt uas tsim los ntawm cov txheej txheem txo cov hydrogen tuaj yeem ua rau kub hnyiab mus rau hauv cobalt oxide hauv huab cua.Oxidation tshwm sim ntawm qhov kub thiab txias.Thaum rhuab, cobalt reacts hnyav nrog oxygen, sulfur, chlorine, bromine, thiab lwm yam, los tsim cov sib txuas sib txuas.Cobalt yog soluble nyob rau hauv dilute acids thiab yog passivated nyob rau hauv fuming nitric acid los ntawm kev tsim ib tug oxide zaj duab xis.Cobalt maj mam etched los ntawm hydrofluoric acid, ammonia thiab sodium hydroxide.Cobalt yog ib qho tseem ceeb raw khoom rau zus tau tej cov tshav kub-resistant alloys, hard alloys, anti-corrosion alloys, sib nqus alloys thiab ntau yam cobalt ntsev.Cobalt yog ib qho amphoteric hlau.

Lub cev thiab tshuaj lom neeg cov khoom ntawm cobalt txiav txim siab tias nws yog ib qho tseem ceeb raw khoom rau zus tau tej cov tshav kub-resistant alloys, cemented carbide, anti-corrosion alloys, sib nqus alloys thiab ntau yam cobalt ntsev.Cobalt-based alloy los yog cobalt-muaj alloy steel yog siv los ua cov hniav, impellers, conduits, dav hlau cav, foob pob ua ntxaij cav, missile Cheebtsam thiab ntau yam high-load heat-resistant Cheebtsam nyob rau hauv cov khoom siv tshuaj thiab cov ntaub ntawv tseem ceeb hlau nyob rau hauv lub atomic zog kev lag luam.Cobalt raws li ib tug binder nyob rau hauv hmoov metallurgy tuaj yeem ua kom ntseeg tau tias cemented carbide muaj qee qhov toughness.Cov hlau nplaum sib nqus yog cov ntaub ntawv tseem ceeb hauv kev lag luam hluav taws xob thiab hluav taws xob niaj hnub, siv los tsim ntau yam khoom siv acoustic, kho qhov muag, hluav taws xob thiab cov khoom sib nqus.Cobalt kuj yog ib qho tseem ceeb ntawm cov hlau nplaum ruaj khov.Hauv kev lag luam tshuaj, cobalt yog siv ntxiv rau superalloys thiab anti-corrosion alloys, tab sis kuj rau cov xim iav, pigments, enamel thiab catalysts, desiccant thiab lwm yam.Tsis tas li ntawd, kev siv cobalt muaj qhov kev loj hlob siab tshaj plaws hauv cov roj teeb.

Cov hlau cobalt feem ntau yog siv los ua cov alloys.Cobalt puag alloy yog cov ntsiab lus dav dav rau ib lossis ntau cov hlau ua los ntawm cobalt thiab chromium, tungsten, hlau thiab npib tsib xee.Cov cuab yeej hlau uas muaj qee tus nqi ntawm cobalt tuaj yeem txhim kho qhov hnav tsis kam thiab txiav kev ua haujlwm ntawm cov hlau.Starlite carbide uas muaj ntau tshaj 50% cobalt yuav tsis poob nws qhov qub hardness txawm tias rhuab mus rau 1000 ° C, thiab tam sim no cov carbide no tau dhau los ua cov khoom tseem ceeb tshaj plaws uas siv los ntawm cov cuab yeej txiav kub thiab txhuas.Nyob rau hauv cov ntaub ntawv no, cobalt combines lwm cov hlau carbide nplej nyob rau hauv lub alloy muaj pes tsawg leeg, thiaj li hais tias cov alloy muaj zog dua toughness thiab txo qhov rhiab heev rau tej yam.Cov hlau no yog fused thiab welded rau saum npoo ntawm qhov chaw, uas tuaj yeem ua rau lub neej ntawm cov khoom los ntawm 3 mus rau 7 zaug.Cov alloys siv ntau tshaj plaws hauv aerospace technology yog nickel-based alloys, thiab cobalt-based alloys kuj siv tau, tab sis "lub zog mechanism" ntawm ob lub alloys txawv.Lub zog ntawm nickel-raws li alloys uas muaj titanium thiab txhuas yog siab vim yog tsim ntawm ib theem hardening tus neeg sawv cev muaj li NiAl (Ti), thaum lub khiav hauj lwm kub siab, cov theem hardening tus neeg saib xyuas hais yog pauv mus rau cov khoom tov, ces tus alloy sai poob lub zog.Lub tshav kub tsis kam ntawm cobalt-raws li alloys yog vim yog tsim ntawm refractory carbides, uas tsis yooj yim rau tig mus rau hauv cov ntsiab lus, thiab diffusion kev ua yog me me.Thaum qhov kub siab tshaj 1038 ° C, qhov zoo ntawm cobalt-raws li alloys tau pom tag nrho.Rau high-efficiency, high-temperature cav, cobalt-based alloys yog txoj cai.