Xov xwm
-
Niobium siv los ua catalyst hauv roj cell
Brazil yog lub ntiaj teb cov neeg tsim khoom loj tshaj plaws ntawm niobium thiab tuav txog 98 feem pua ntawm cov khoom muaj nqis nyob hauv ntiaj teb. Cov khoom siv tshuaj no yog siv rau hauv cov hlau alloys, tshwj xeeb tshaj yog cov hlau uas muaj zog, thiab yuav luag tsis muaj kev txwv ntawm cov ntawv siv high-tech los ntawm cov xov tooj ntawm tes mus rau lub tshuab dav hlau. ...Nyeem ntxiv -
Los ntawm cobalt mus rau tungsten: yuav ua li cas hluav taws xob tsheb thiab cov xov tooj smartphones ua rau muaj kev kub ntxhov tshiab
Dab tsi hauv koj cov khoom? Peb feem coob tsis xav txog cov ntaub ntawv uas ua rau lub neej niaj hnub ua tau. Txawm li cas los xij, cov thev naus laus zis xws li cov xov tooj ntse, tsheb fais fab, TVs loj thiab lub zog ntsuab yog nyob ntawm ntau yam tshuaj uas tib neeg tsis tau hnov txog. Txog thaum kawg...Nyeem ntxiv -
Muaj zog turbine hniav nrog molybdenum silicides
Cov kws tshawb fawb ntawm Kyoto University tau pom tias molybdenum silicides tuaj yeem txhim kho kev ua haujlwm ntawm turbine blades hauv ultrahigh-temperature combustion systems. Gas turbines yog cov cav uas tsim hluav taws xob hauv cov chaw tsim hluav taws xob. Kev khiav hauj lwm kub ntawm lawv cov tshuab combustion tuaj yeem tshaj ...Nyeem ntxiv -
Cov txheej txheem yooj yim rau huab hwm coj ua ultrathin, zoo molybdenum trioxide nanosheets
Molybdenum trioxide (MoO3) muaj peev xwm ua ib qho tseem ceeb ntawm ob sab (2-D) cov khoom, tab sis nws cov khoom siv ntau tau lagged qab ntawm lwm tus hauv nws chav kawm. Tam sim no, cov kws tshawb fawb ntawm A * STAR tau tsim ib txoj hauv kev yooj yim rau kev tsim cov khoom siv ultrathin, zoo MoO3 nanosheets. Tom qab lub disc ...Nyeem ntxiv -
Kev tshawb fawb muab txoj cai tshiab tsim rau cov dej-splitting catalysts
Cov kws tshawb fawb tau ntev paub tias platinum yog nyob deb ntawm qhov zoo tshaj plaws catalyst rau splitting dej molecules los tsim hydrogen gas. Ib txoj kev tshawb fawb tshiab los ntawm Brown University cov kws tshawb fawb qhia tias yog vim li cas platinum ua haujlwm tau zoo - thiab nws tsis yog vim li cas tau xav. Kev tshawb fawb, luam tawm hauv ACS Catalysi ...Nyeem ntxiv -
Deforming thiab compacting chromium-tungsten hmoov los tsim cov hlau muaj zog
Tshiab tungsten alloys tau tsim nyob rau hauv Schuh Group ntawm MIT tuaj yeem hloov pauv cov uranium depleted hauv armor-piercing projectiles. Plaub-xyoo cov ntaub ntawv science thiab engineering kawm tiav cov tub ntxhais kawm Zachary C. Cordero ua haujlwm ntawm cov tshuaj lom neeg tsawg, muaj zog, cov khoom siv high-density los hloov ...Nyeem ntxiv -
Yuav ua li cas impurities txav hauv tungsten
Ib feem ntawm lub tshuab nqus tsev vacuum (cov khoom siv plasma) ntawm cov khoom siv fusion sim thiab yav tom ntej fusion reactor tuaj rau hauv kev sib cuag nrog ntshav. Thaum cov plasma ions nkag mus rau hauv cov khoom, cov khoom no dhau los ua cov atom nruab nrab thiab nyob hauv cov khoom. Yog pom los ntawm cov atoms uas comp...Nyeem ntxiv -
Tuam Tshoj Tungsten Concentrate Kev Lag Luam Hauv Kev Nyuaj Siab ntawm Lukewarm Demand
Tuam Tshoj tungsten concentrate kev lag luam tau nyob rau hauv lub siab txij li thaum lub Kaum Hli Ntuj lig vim qhov kev thov tsis txaus los ntawm cov neeg siv khoom kawg tom qab cov neeg siv khoom rov qab los ntawm kev ua lag luam. Concentrate cov neeg muag khoom txiav lawv cov nqi muab los txhawb kev yuav khoom hauv lub ntsej muag ntawm kev lag luam tsis muaj zog. Suav tungsten nqi yog e...Nyeem ntxiv -
Deforming thiab compacting chromium-tungsten hmoov los tsim cov hlau muaj zog
Tshiab tungsten alloys tau tsim nyob rau hauv Schuh Group ntawm MIT tuaj yeem hloov pauv cov uranium depleted hauv armor-piercing projectiles. Plaub-xyoo cov ntaub ntawv science thiab engineering kawm tiav cov tub ntxhais kawm Zachary C. Cordero ua haujlwm ntawm cov tshuaj lom neeg tsawg, muaj zog, cov khoom siv high-density los hloov ...Nyeem ntxiv -
Tungsten thiab titanium compounds tig ib qho alkane rau hauv lwm cov hydrocarbons
Lub catalyst muaj txiaj ntsig zoo uas hloov cov roj propane rau hauv hydrocarbons hnyav tau tsim los ntawm Saudi Arabia King Abdullah University of Science thiab Technology. (KAUST) researchers. Nws ua kom nrawm nrawm rau cov tshuaj tiv thaiv kab mob hu ua alkane metathesis, uas tuaj yeem siv los txhawb ...Nyeem ntxiv -
Cov khoom siv tawv tawv tawv: tungsten-fiber-reinforced tungsten
Tungsten yog tshwj xeeb tshaj yog haum rau cov khoom siv rau kev ntxhov siab heev ntawm cov hlab ntsha uas kaw qhov kub fusion plasma, nws yog cov hlau nrog qhov siab tshaj plaws melting point. Ib qho tsis zoo, txawm li cas los xij, yog nws cov brittleness, uas nyob rau hauv kev ntxhov siab ua rau nws tsis yooj yim thiab pheej ua kom puas. Ib tug tshiab, ntau resilient com ...Nyeem ntxiv -
Tungsten li interstellar radiation shielding?
Qhov kub ntawm 5900 degrees Celsius thiab pob zeb diamond zoo li hardness ua ke nrog cov pa roj carbon: tungsten yog cov hlau hnyav tshaj plaws, tseem muaj cov khoom siv roj ntsha-tshwj xeeb tshaj yog cov kab mob uas muaj cua sov. Ib pab neeg coj los ntawm Tetyana Milojevic los ntawm Kws Qhia Ntawv ntawm Chemistry ntawm University of Vienna qhia rau ...Nyeem ntxiv