Cov xwm txheej tam sim no ntawm molybdenum hauv alloys

Molybdenum feem ntau yog siv nyob rau hauv cov hlau thiab hlau, qhov uas nws yog tsuas yog siv nyob rau hauv zus tau tej cov hlau alloys (kwv yees li 43% ntawm tag nrho cov molybdenum noj nyob rau hauv hlau thiab hlau), stainless hlau (kwv yees li 23%), cov cuab yeej steel thiab siab. -speed steels (kwv yees li 8%), thiab cam khwb cia hlau thiab yob (kwv yees li 6%). Feem ntau ntawm cov molybdenum yog siv ncaj qha rau hauv steelmaking los yog cam khwb cia hlau tom qab briquetted li industrial molybdenum oxide, thaum ib tug me me feem yog thawj smelted rau hauv ferromolybdenum thiab ces siv nyob rau hauv steelmaking. Molybdenum raws li cov khoom siv alloying hauv cov hlau muaj qhov zoo hauv qab no: nws ua kom lub zog thiab tawv ntawm cov hlau; nws txhim kho corrosion kuj ntawm cov hlau hauv cov kua qaub thiab alkaline daws thiab kua hlau; nws nce qhov hnav tsis kam ntawm cov hlau; thiab nws txhim kho cov hardenability, weldability, thiab kub tsis kam ntawm steel. Piv txwv li, stainless hlau uas muaj 4-5% molybdenum feem ntau siv nyob rau hauv qhov chaw uas yaig thiab corrosion hnyav dua, xws li cov khoom siv marine thiab cov khoom siv tshuaj.

Txhawm rau molybdenum ua lub substrate los ntawm kev ntxiv lwm cov ntsiab lus (xws li titanium, zirconium, hafnium, tungsten thiab lub ntiaj teb tsis tshua muaj cov ntsiab lus, thiab lwm yam) tsim cov hlau tsis muaj hlau, cov alloying ntsiab lus tsis tsuas yog molybdenum alloys ua lub luag haujlwm ntawm cov tshuaj tiv thaiv kom muaj zog thiab tswj xyuas qis. -temperature plasticity, tab sis kuj tsim kom ruaj khov, diffuse faib ntawm carbide theem, txhim kho lub zog ntawm alloy thiab recrystallization kub. Molybdenum-raws li alloys yog siv nyob rau hauv high heat generating ntsiab, extruded abrasives, iav melting rauv electrodes, tshuaj tsuag txheej, hlau ua hauj lwm cov cuab yeej, thiab spacecraft Cheebtsam vim lawv zoo zog, mechanical stability, thiab siab ductility.