Cov chaw siv rau cov hlau molybdenum

Molybdenum (Mo) yog cov khoom siv hlau uas muaj tus lej atomic ntawm 42. Nws yog cov xim dawb-dawb, ci ntsa iab hlau nrog lub siab melting point thiab siab thermal conductivity. Molybdenum tshwm sim nyob rau hauv cov xwm li ntau yam ores, feem ntau yog molybdenite thiab molybdenite-tooj ​​liab.

Molybdenum muaj ntau yam kev siv tseem ceeb. Vim nws qhov siab melting point thiab kub tsis kam, molybdenum yog dav siv nyob rau hauv kev tsim cov high-temperature alloys, refractory cov ntaub ntawv thiab lub tshuab nqus tsev vacuum furnaces. Molybdenum kuj yog ib qho tseem ceeb ntawm cov khoom siv hluav taws xob hauv kev lag luam hluav taws xob, qhov chaw uas nws yog siv hauv kev tsim cov raj hluav taws xob, cov khoom siv semiconductor thiab cov yeeb yaj kiab nyias nyias. Tsis tas li ntawd, molybdenum yog siv rau hauv kev tsim cov khoom xws li molybdenum xov hlau, foils thiab nplooj ntawv siv rau hauv electron microscopes, X-ray raj thiab cov khoom siv nqus tsev vacuum.

Molybdenum kuj tseem yog ib qho tseem ceeb alloying khoom. Nws tuaj yeem siv los tsim cov alloys nrog lwm cov hlau xws li hlau, npib tsib xee thiab tooj liab los txhim kho cov alloy qhov hardness, lub zog thiab corrosion kuj. Molybdenum alloys yog dav siv nyob rau hauv aerospace, automotive thiab tshuaj industries.

Tsis tas li ntawd, molybdenum muaj ntau yam kev siv. Piv txwv li, molybdenum yog siv los ua ib qho kab mob rau cov nroj tsuag hauv kev ua liaj ua teb los txhawb cov nroj tsuag kev loj hlob thiab nce yields. Hauv kev kho mob, molybdenum yog siv los ua cov xov tooj cua thiab ua cov khoom siv tshuaj. Isotopes ntawm molybdenum kuj tseem siv rau hauv kev kho hluav taws xob thiab kev tshawb fawb nuclear. Zuag qhia tag nrho, molybdenum muaj cov ntawv thov tseem ceeb thiab muaj txiaj ntsig hauv ntau qhov chaw.

Kev lag luam tshuaj

Lubricants: Molybdenum dioxide yog cov roj nplua nyeem zoo vim nws muaj qhov sib txhuam qis, muaj zog tawm los, thiab tuaj yeem siv tau ib txwm nyob hauv lub tshuab nqus tsev thiab ntawm ntau yam ultra-low thiab kub kub, thiab yog li siv dav. ntau yam kev siv xws li roj turbines, iav, pwm thiab tuag, hauv aerospace thiab nuclear industries.

Catalyst: Molybdenum tebchaw yog ib qho ntawm ntau yam catalysts thiab tau dav siv nyob rau hauv cov tshuaj, roj av, plastics thiab textile industries. Piv txwv li: molybdenum disulphide muaj cov khoom tiv thaiv sulfur, thiab tuaj yeem ua rau cov hydrogenation ntawm carbon monoxide los tsim cov cawv nyob rau hauv qee yam mob, uas yog ib qho kev cog lus rau C1 chemistry; molybdenum yog siv ua ke nrog cobalt thiab npib tsib xee ua lub catalyst rau roj refining thiab pre-kho. Lwm cov catalysts muaj xws li molybdenum disulphide, molybdenum oxide, molybdate, ammonium sec-molybdate, thiab lwm yam.

Hluav taws xob thiab hluav taws xob
Molybdenum muaj cov khoom siv hluav taws xob zoo thiab qhov kub thiab txias, thiab cov coefficient ntawm thermal expansion zoo ib yam li cov iav, yog li nws yog dav siv nyob rau hauv kev tsim cov spiral filament core hlau, txhuas hlau thiab hooks thiab lwm yam khoom. Tsis tas li ntawd, molybdenum hlau kuj yog ib qho zoo tagnrho electrode hlau rau EDM tshuab cov cuab yeej, muaj peev xwm txiav txhua yam hlau thiab nyuaj alloys, thiab nws cov paug ua yog ruaj khov, uas tuaj yeem txhim kho qhov tseeb ntawm pwm.
Kev kho mob teb
Molybdenum yog ib qho ntawm cov kab tseem ceeb ntawm tib neeg lub cev thiab ib feem ntawm ntau cov enzymes. Nws lub luag haujlwm tseem ceeb hauv lub cev yog koom nrog kev sib koom ua ke ntawm sulfur, hlau thiab tooj liab. Qhov zoo ntawm molybdenum tuaj yeem txhawb tib neeg txoj kev loj hlob, txhim kho cov pa oxygen hauv lub cev, inhibit qog, tswj lub zog metabolism ntawm myocardium thiab tiv thaiv myocardium, thaum tsis muaj molybdenum tuaj yeem ua rau cov hniav caries, pob zeb raum, Creutzfeldt-Jakob kab mob. , macroglossia, oesophageal cancer thiab lwm yam kab mob, thiab yog li molybdenum kuj tau siv nyob rau hauv cov tshuaj, xws li ammonium molybdate, ib tug tshuaj uas yog siv nyob rau hauv lub sij hawm ntev kev cia siab rau cov neeg mob siab noj zaub mov noj.
Tsiaj txhu
Lub luag haujlwm lom neeg ntawm molybdenum yog raws li nws lub luag haujlwm ua ib feem ntawm qee cov molybdenum-muaj enzymes hauv cov tsiaj, tsis ncaj qha cuam tshuam rau kev ua haujlwm lom neeg ntawm cov enzymes. Ntxiv rau qhov no, molybdenum plays lub luag haujlwm tshwj xeeb hauv cov khoom noj khoom haus metabolism ntawm ruminants. Ntawm qhov tod tes, molybdenum ncaj qha koom nrog kev hloov pauv ntawm cov khoom noj nitrate hauv rumen ua ib feem ntawm rumen microbial nitrate oxidase ntawm ruminants, thiab ntawm qhov tod tes, molybdenum muaj cov nyhuv stimulating ntawm rumen microbes raws li cofactor rau lub rumen microbes. sulphate oxidase enzyme, uas pab txhawb rau kev zom cov khoom siv crude fiber ntau hauv ruminants thiab yog li txhawb kev loj hlob ntawm ruminant. Yog li ntawd, thaum cov ntsiab lus molybdenum nyob rau hauv pasture thiab pub yog tsis txaus, nws yog tsim nyog los ntxiv molybdenum additives rau pub raws li nruj kev noj haus kev xav tau kev pab thiab txheej txheem technology raws li cov kev xav tau ntawm cov tsiaj, feem ntau piv txwv yog ntxiv ntawm 10. mg/d ntawm molybdenum rau cov mis nyuj pub.

Ua liaj ua teb
Molybdenum yog ib qho tseem ceeb "txoj kab" hauv cov nroj tsuag, thiab qhov tsis muaj molybdenum tuaj yeem cuam tshuam rau kev loj hlob ntawm cov nroj tsuag. Raws li ib qho tseem ceeb kab nyob rau hauv cov nroj tsuag kev loj hlob, molybdenum tsis tsuas yog txhawb phosphorus uptake, tab sis kuj accelerates tsim thiab hloov ntawm alcohols nyob rau hauv cov nroj tsuag, tsub kom cov ntsiab lus ntawm chlorophyll thiab vitamin C, thiab txhim kho cov nroj tsuag 'resistant rau drought, txias thiab kab mob. Raws li qhov tseem ceeb ntawm molybdenum rau cov nroj tsuag, ntau lub teb chaws tau pib tsim thiab siv cov chiv uas muaj molybdenum, xws li Changsha County, Hunan Province, Tuam Tshoj, Nanhua Township, nrog ammonium molybdate noob sib tov, txiv laum huab xeeb yield nce 32.2% , Heilongjiang State Farm ntawm soybean molybdenum fertilizer, taum yields nce li ntawm 10 feem pua.