Raws li cov khoom siv hlau tseem ceeb, cov khoom siv molybdenum tau siv dav hauv ntau lub teb. Piv nrog rau lwm cov ntaub ntawv hlau, nws muaj ntau yam zoo heev, xws li:
- High melting point:
Molybdenum muaj cov ntsiab lus melting siab heev ntawm 2610 degree txog 2623 degree, ua rau nws haum rau qhov kub thiab txias.
- High thermal conductivity:
Molybdenum muaj cov thermal conductivity siab thiab tuaj yeem hloov cov cua sov sai. Cov cuab yeej no tso cai rau cov khoom lag luam molybdenum kom tswj tau qhov kev ua haujlwm ruaj khov hauv qhov kub thiab txias thiab tsis yooj yim puas los ntawm cov cua sov.
- Zoo mechanical zog:
Molybdenum cov khoom muaj lub zog siab thiab hardness, nrog rau kev nkag siab zoo thiab toughness. Cov khoom no tuaj yeem txhim kho tau zoo los ntawm kev ntxiv lwm cov hlau los ua molybdenum alloys. Cov khoom siv kho tshuab no tso cai rau cov khoom siv molybdenum kom tswj tau qhov kev ua haujlwm ruaj khov thaum raug cov neeg kho tshuab loj thiab thermal stresses. Tshwj xeeb, lawv tseem tuaj yeem tswj hwm lawv cov qauv kev ntseeg siab ntawm qhov kub thiab txias.
- Tsawg thermal expansion coefficient:
Molybdenum muaj cov thermal expansion coefficient tsawg, uas txhais tau hais tias cov khoom muaj qhov zoo ntawm qhov ruaj khov nyob rau hauv qhov kub thiab txias, uas yog qhov tseem ceeb tshwj xeeb rau kev tsim cov cuab yeej precision thiab khoom siv.
- Corrosion kuj:
Molybdenum cov khoom muaj kev tiv thaiv corrosion zoo thiab pom zoo corrosion kuj nyob rau hauv ntau yam tshuaj ib puag ncig. Tshwj xeeb tshaj yog nyob rau hauv oxidizing ib puag ncig, lawv ua tau zoo. Qhov no tso cai rau cov khoom lag luam molybdenum kom tswj tau lub neej ntev hauv kev ua haujlwm hnyav.
Feem ntau, nyob rau hauv ib qho chaw uas tsis muaj oxygen, molybdenum muaj qhov zoo corrosion kuj mus rau ntau yam acids, hlau kua thiab molten iav. Tsis pub dhau 1100 degree, molybdenum kuj ruaj khov hauv hydrogen, ammonia thiab nitrogen.
- Zoo hluav taws xob thiab thermal conductivity:
Molybdenum muaj hluav taws xob zoo thiab thermal conductivity, uas ua rau nws tseem ceeb hauv kev lag luam hluav taws xob thiab feem ntau siv los tsim cov khoom siv thermal conductive thiab cov khoom siv hluav taws xob hauv cov khoom siv hluav taws xob. Piv txwv li, cov khoom xws li cov raj electron thiab transistors, electrodes thiab filaments.
Txawm li cas los xij, cov khoom siv molybdenum kuj muaj qee qhov tsis zoo:
- Kev ua haujlwm nyuaj:
Molybdenum muaj siab hardness thiab brittleness, ua rau nws cov txheej txheem kuj nyuaj thiab nyuaj. Cov cuab yeej tshaj lij thiab cov txheej txheem yuav tsum tau ua thaum lub sijhawm ua haujlwm kom ntseeg tau qhov zoo thiab kev ua haujlwm ntawm cov khoom.
- Yooj yim rau oxidize:
Molybdenum yog yooj yim oxidized nyob rau hauv cov huab cua los ua ib tug ntom oxide zaj duab xis. Txawm hais tias cov oxide zaj duab xis no tuaj yeem tiv thaiv sab hauv molybdenum los ntawm kev oxidation ntxiv, lub xub ntiag ntawm oxide zaj duab xis yuav cuam tshuam rau kev ua haujlwm thiab kev siv cov khoom hauv qee qhov kev siv uas yuav tsum tau ua kom pom qhov molybdenum.
- Tus nqi siab:
Molybdenum yog cov hlau tsis tshua muaj nrog cov mining siab thiab cov nqi ua haujlwm. Yog li ntawd, tus nqi ntawm cov khoom molybdenum kuj yog siab, uas txwv nws daim ntawv thov nyob rau hauv ib co teb.
Hauv cov ntsiab lus, cov khoom no thiab cov yam ntxwv ntawm cov khoom molybdenum ua rau nws siv dav hauv ntau qhov chaw. Txawm li cas los xij, nws yog ib qho tsim nyog yuav tsum tau ua tib zoo saib xyuas nws cov kev txwv thaum siv thiab siv cov kev ntsuas sib xws los kov yeej nws qhov tsis txaus txhawm rau muab kev ua si tag nrho rau nws qhov zoo.
