Hafnium Hmoov, Hf
>> Kev Taw Qhia Prtoduct
| Cov mis mos molecular. | Hf |
| Tus Lej | 7440-58-6 |
| Nta | txho dub hlau hmoov |
| Melting taw tes | 2227C |
| Boiling taw tes | 4602 C |
| Yog ceev | Cov. 13. 13. 31g / cm3 |
| Kev Siv | feem ntau siv los ua X-ray cathode thiab tungsten hlau manufacturngIndustry Pure hafnium nrog plasticity, ua haujlwm yooj yim, siab kub tsis kam tiv thaiv, yog qhov tseem ceeb ntawm kev lag luam atomic energyHafnium thermal neutron ntes hla ntu, yog qhov zoo tagnrho neutron absorber, canbe siv raws li atomic reactor tswj. pas nrig thiab tiv thaiv cov khoom siv |
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>> Cov Ntawv Pov Thawj Loj
>> Cov ntaub ntawv muaj feem xyuam
Hafnium rau nyiaj grey hlau, nws yog xim hlau luster; Muaj ob qhov sib txawv ntawm hafniummetal: hafnium yog hexagonal ntom ntim cov ntim hloov pauv (1750 ℃) nrog qhov hloov siab dua li zirconium. Hlau Hafnium muaj qhov sib txawv ntawm qhov sib txawv ntawm qhov kub.
Hafnium hlau muaj lub siab neutron nqus kom haum hla ntu thiab tuaj yeem siv ua cov khoom siv acontrol rau cov reactors.
Tus qauv siv lead ua tau muab faib ua ob hom: hexagonal ntom ntim (-) thaum ntsuas kub yog hauv qab 1300 ℃; Tshaj 1300 ℃, yog lub cev qhov chaw cub sau lo lus (- mis).
Cov yas hlau uas ua nyuaj thiab nkig nyob rau hauv qhov pom ntawm impurities. Lub qhov cua ruaj khov, cov xim tsaus nti tsuas yog saum npoo thaum hlawv. Qhov ntsiab lus tuaj yeem raug ignited los ntawm nplaim taws ntawm ib qho kev sib tw. Zirconium nyiam qhov. Tsis yog dej, dilute acid los yog muaj zog alkali kev ua, tab sis yooj yim rau yaj hauv aqua aqua thiab hydrofluoric acid. Nws muaj +4 valence hauv thecompound. Hafnium alloy (Ta4HfC5) yog paub tias muaj lub siab tawg ntau tshaj plaws (txog 4215 ℃) .Crystal qauv: Lub xovtooj ntawm yog hexagonal
| CAS tsis muaj. | 7440-58-6 |
| Melting taw tes | 2 227 ℃ |
| Lub ntsiab lus kub | 4602 ℃ |
| Qhov ntom ntawm | 13.31g / cm3 (20 ℃) |
| Cov ncauj lus hauv Cov Crust (PPM) | 5.3 |
| Ntsiab lus hauv lub hnub: (qhov chaw ib lab) | 0.001 |
| Cov ncauj lus hauv dej hiav txwv: (PPM) | 0.000007 |
| Mohs hardness | 5.5 |
| Tus nqi ntawm lub suab twg mus ncig (m / S) | 3010 |
| Qhov zoo ntawm proton | 1.20456E-25 |
| Proton tus txheeb ze ze | 72.504 |
Tshuaj lom neeg thaj chaw
Hafnium zoo heev rau zirconium hauv cov khoom hauv tshuaj lom neeg. Nws muaj cov tshuaj tiv thaiv zoo corrosion thiab tsis yooj yim rau kev tawm tsam los ntawm cov kua qaub puag ncig aqueous tov. Nws yog yooj yim soluble hauv hydrofluoric acid thiab ua fluorinated complex. Thaum muaj qhov kub thiab txias, hafnium tseem tuaj yeem ua ke ncaj qha nrog roj xws li oxygen thiab nitrogen los ua oxides thiab nitrides.
SIV:
Hafnium muaj txiaj ntsig zoo vim tias nws emits hluav taws xob tau yooj yim (piv txwv li cov ntxeem tau rau lub teeb ci ua tsis tau) Alloys ntawm hafnium thiab tungsten lossis molybdenum yog siv los ua cov roj hluav taws xob rau cov hluav taws xob muaj hluav taws xob tsis zoo. Nquag siv hauv
Xoo hluav taws xob cathode thiab tungsten kev tsim khoom lag luam. Cov ntshiab hafnium muaj plasticity, yooj yim txheej txheem, siab kub tsis kam thiab corrosion tsis kam, yog cov khoom tseem ceeb hauv kev lag luam atomic zog kev lag luam. Hafnium thermal neutron ntes hla ntu yog qhov zoo tagnrho neutron absorber, uas tuaj yeem raug siv los ua kev tswj cov pas nrig thiab tiv thaiv cov cuab yeej hauv atomic reactor.
Hafnium hmoov ACTS ua qhov tshuaj ntxiv rau pob zeb. Cathodes ntawm X-ray hlab hluav taws xob tuaj yeem tsim nyob hauv kev lag luam hluav taws xob. Hafnium alloys tuaj yeem siv los ua tus tiv thaiv pem hauv ntej rau pob zeb tsis muaj dab tsi thiab glider rov nkag tsheb, thiab HF-TA alloys tuaj yeem siv los ua cov cuab yeej steel thiab cov khoom tiv thaiv.
Hafnium yog siv los ua cov khoom sib ntxiv hauv cov txheej txheem tiv thaiv tshav kub, xws li tungsten, molybdenum, thiab tantalum. HfC tuaj yeem siv ua carbide ntxiv vim nws lub siab hardness thiab melting point. Cov ntsiab lus yaj ntawm 4TaCHfC yog li 4215 ℃, uas yog cov tshuaj paub ntau tshaj plaws hauv kev sib txuas. Hafnium yog siv los ua tus tawm hauv cov txheej txheem ntau aeration system. Hafnium getter tshem tawm cov pa oxygen, nitrogen, thiab lwm yam los ntawm cov kab ke tsis muaj roj av. Hafnium yog feem ntau, siv los ntxiv rau hauv cov roj hydraulic los tiv thaiv kev kub ntxhov ntawm cov roj hydraulic hauv kev ua haujlwm siab, nrog lub zog tiv thaiv tsis zoo, cov yam ntxwv no, yog li feem ntau siv hauv kev lag luam roj roj. Kev kho mob roj roj. Hafnium tseem siv nyob rau hauv qhov tseeb intel45 nanometer processors.