molybdenum U-shaped cua sov hlau
Kev xaiv cov hlau zoo tshaj plaws rau cov khoom cua sov yog nyob ntawm cov kev cai tshwj xeeb ntawm daim ntawv thov. Txawm li cas los xij, qee cov ntaub ntawv siv rau cov khoom cua sov muaj xws li:
1. Nickel-chromium alloy: Nickel-chromium alloy yog dav siv nyob rau hauv cov cua kub ntsiab lus vim nws siab resistivity, zoo oxidation kuj, thiab kub kuj. Feem ntau siv hauv cov khoom siv hauv tsev xws li toasters, plaub hau tshuab, thiab qhov cub.
2. Kanthal: Kanthal yog hlau-chromium-aluminium alloy paub txog nws lub zog kub kub, zoo oxidation tsis kam, thiab kev pab lub neej ntev. Nws yog feem ntau siv nyob rau hauv industrial cua sov daim ntaub ntawv xws li kilns, furnaces thiab industrial ncu.
3. Tungsten: Paub txog nws qhov chaw melting siab heev, tungsten yog siv rau hauv cov ntawv thov uas yuav tsum tau muaj qhov kub thiab txias, xws li cov cua kub kub thiab cov txheej txheem tshwj xeeb.
4. Molybdenum: Molybdenum yog lwm cov khoom siv nrog lub siab melting point thiab zoo tiv thaiv corrosion thiab oxidation, ua rau nws haum rau high-temperature cua sov ntsiab nyob rau hauv tshwj xeeb daim ntaub ntawv.
Cov xaim zoo tshaj plaws rau cov cua sov yog nyob ntawm cov yam ntxwv xws li qhov xav tau ntawm kev ua haujlwm kub, qhov chaw uas nws yuav siv, thiab cov cua kub tshwj xeeb ntawm daim ntawv thov. Txhua yam khoom muaj nws tus kheej zoo thiab cov kev txwv, yog li kev xaiv yuav tsum tau ua raws li cov kev xav tau tshwj xeeb ntawm cov khoom cua sov qhov kev npaj siv.
Molybdenum yog suav tias yog ib qho zoo ntawm cov hluav taws xob hluav taws xob, txawm hais tias nws tsis ua kom muaj cua sov zoo li lwm yam hlau xws li tooj liab lossis txhuas. Lub thermal conductivity ntawm molybdenum ntawm chav tsev kub yog li 138 W / m·K, uas yog qis dua tooj liab (li 401 W / m·K) thiab txhuas (li 237 W / m·K).
Txawm li cas los xij, molybdenum lub thermal conductivity tseem yog siab dua piv rau ntau lwm cov ntaub ntawv, tshwj xeeb tshaj yog thaum kub kub. Qhov no ua rau molybdenum ib qho kev xaiv tsim nyog rau cov ntawv thov uas xav tau kev hloov pauv kub kub, xws li cov khoom cua sov, cov cua kub kub thiab lwm yam kev tswj xyuas thermal.
Ntxiv nrog rau thermal conductivity, molybdenum muaj lwm yam khoom tseem ceeb xws li lub siab melting point, tiv thaiv oxidation, thiab zoo txhua yam muaj zog ntawm qhov kub thiab txias, ua rau nws muaj ntau yam khoom siv rau ntau yam kev siv kub.
Molybdenum feem ntau raug kho kom sov los txhim kho nws cov khoom siv kho tshuab thiab txo cov kev ntxhov siab sab hauv. Cov txheej txheem kev kho cua sov rau molybdenum feem ntau suav nrog annealing, tswj cua sov thiab txias txheej txheem. Kev kho cua sov tshwj xeeb rau molybdenum tej zaum yuav muaj xws li:
1. Annealing: Molybdenum feem ntau yog annealed ntawm qhov kub thiab txias, feem ntau nyob rau hauv thaj tsam ntawm 1,800 txog 2,200 degrees Celsius (3,272 txog 3,992 degrees Fahrenheit). Cov khoom yog tuav ntawm qhov ntsuas kub no rau lub sijhawm tshwj xeeb kom tso cai rau recrystallization thiab kev loj hlob ntawm cov nplej, uas pab txo qis kev ntxhov siab thiab txhim kho ductility.
2. Kev tswj kom txias: Tom qab cov txheej txheem annealing, molybdenum yog maj mam txias rau hauv chav sov hauv qhov kev tswj xyuas kom tsis txhob tsim cov kev ntxhov siab sab hauv tshiab thiab tswj cov microstructure xav tau.
Cov txheej txheem tshwj xeeb ntawm cov txheej txheem kev kho cua sov, suav nrog qhov kub thiab txias, lub sijhawm thiab qhov txias txias, yog txiav txim siab raws li qhov xav tau cov cuab yeej siv tshuab thiab cov ntawv thov tshwj xeeb.
Zuag qhia tag nrho, kev kho cua sov ntawm molybdenum lub hom phiaj txhawm rau txhim kho nws cov microstructure thiab cov khoom siv kho tshuab kom ntseeg tau tias nws tsim nyog rau cov ntawv thov kub xws li kev tsim cov khoom cua sov, cov khoom siv hauv tsev thiab lwm yam khoom siv tshwj xeeb.
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