0102 ib0304 ib05
High Purity Hlau Hafnium Granules Hf rau Kev Tshawb Fawb Kev Tshawb Fawb CAS 7440-58-6
Cov khoom
• Melting Point: 2227 ° C (lit.)
• Boiling Point: 4602 ° C (lit.)
• Exact Mass: 179.94656
• Ceev: 13.31 g/cm3
• Cia Kub: Khaws ntawm +15 ° C txog +25 ° C.
• LogP: 0.00000
• Dej Solubility: soluble HF; maj mam reacts nrog conc H2SO4, aqua regia [KIR80]
Specification
| Cov khoom kuaj | Specifications |
| Qhov tshwm sim | ci ntsa iab khoom granule |
| Purity | 99.95% -99.99% |
| Solubility | Soluble nyob rau hauv N, N-Dimethylformamide, Soluble nyob rau hauv methanol, Sparingly soluble inglacial acetic acid, heev me ntsis soluble inchloroform, xyaum insoluble nyob rau hauv dej. |
| Qhov zoo | ntau lawm, zoo siab, xa khoom sai |
| Nco tseg | Txhawb customize loj, zoo li, purity, sib txawv alloy proportions thiab lwm yam. Tiv tauj peb ua ntej (Nqi yog raws li qhov loj me thiab purity) |
Cov khoom siv
Kev siv Hafnium raug txwv vim muaj tsawg. Qhov tseem ceeb ntawm kev siv hafnium yog nyob rau hauv kev lag luam nuclear, qhov twg nws yog siv rau hauv cov roj rods los tswj fission muab nws siab neutron absorption cross section. Zoo ib yam li zirconium, hafnium yog alloyed nrog niobium thiab carbide los tsim cov khoom kub kub refractory rau furnaces thiab dav hlau Cheebtsam nrog rau cov plasma cutters. Tsis tas li ntawd, hafnium oxide tau siv los ntxiv lossis hloov cov khoom siv silicone oxide raws li microprocessor chips hauv qee yam kev siv nrog rau hauv cathodes thiab capacitors (Field et al., 2011). Hafnium muaj kev sib raug zoo rau kev nqus cov neutrons qeeb. Cov cwj pwm no, nrog rau nws lub zog thiab kev tiv thaiv corrosion, ua rau nws zoo dua rau cadmium, uas yog siv los tsim cov pas nrig tswj rau nuclear reactors. Qhov kev siv no yog qhov tseem ceeb tshwj xeeb rau hom nuclear reactors siv nyob rau hauv submarines. Los ntawm kev txav cov pas nrig tswj hauv thiab tawm ntawm lub tshuab hluav taws xob nuclear, lub fission saw cov tshuaj tiv thaiv tuaj yeem tswj tau raws li cov neutrons tau nqus hauv cov hlau ntawm cov pas nrig. Lub drawback rau hafnium tswj rods yog lawv cov nuj nqis: nws raug nqi kwv yees li ib lab daus las rau ob peb lub kaum os rods siv nyob rau hauv ib tug nuclear reactor.In lub tshuab nqus tsev raj thiab lwm yam kev siv uas yuav tsum muaj gases tshem tawm, hafnium yog siv asa "getter" nqus tej kab. oxygen lossis nitrogen nyob rau hauv lub raj, yog li ncua lub neej ntawm lub tshuab nqus tsev vacuum. Hafnium qhov zoo kuj ua rau nws zoo tagnrho rau filaments hauv qhov muag teev thiab, thaum sib xyaw nrog cov hlau tsis tshua muaj hauv ntiaj teb, raws li "sparking" misch hlau. Hafnium kuj tseem siv rau qhov tsawg dua li tus neeg sawv cev alloying rau ntau lwm yam hlau, suav nrog hlau, titanium, thiab niobium. Tau nyob rau hauv mining thiab purification ntawm cov hlau; siv nyob rau hauv kev tswj rods nyob rau hauv nuclear reactors thiab nyob rau hauv kev tsim ntawm lub teeb filaments; pom nyob rau hauv tag nrho cov zirconium muaj cov zaub mov.
Ntim Thiab Cia
Ntim:
Ntim hauv hnab yas woven hnab, 25kg ib lub hnab los yog raws li koj xav tau.
Lus Cim: Cov tshuaj muaj pes tsawg leeg thiab qhov loj tuaj yeem ua kom zoo los ntawm cov neeg siv khoom xav tau
Tej yam kev mob rau kev ruaj ntseg cia, nrog rau tej yam incompatibilitiess
Hluav taws kub. Sib cais los ntawm cov muaj zog oxidants, muaj zog acids thiab halogens. Khaws nyob rau hauv inert gas. Khaws cia rau hauv lub thawv qub xwb.Storage: Khaws hafnium rau hauv qhov chaw tiv thaiv hluav taws. Khaws nws cais tawm ntawm cov neeg muaj zog oxidizing, muaj zog hauv paus, halogens, phosphorus, thiab sulfur. Khaws cia hauv qab dej.
Kev Tiv Thaiv Kev Nyab Xeeb
Kev ceev faj rau kev nyab xeeb
Tsis muaj nplaim taws, tsis muaj dab tsi thiab tsis haus luam yeeb. Tsis txhob cuam tshuam rau kev sib txhuam los yog kev poob siab. Kaw qhov system, plua plav tawg-pov thawj cov khoom siv hluav taws xob thiab teeb pom kev zoo. Tiv thaiv kom tsis txhob muaj plua plav. Tuav nyob rau hauv qhov chaw zoo ventilated. Hnav khaub ncaws tiv thaiv kom haum. Tsis txhob kov ntawm daim tawv nqaij thiab qhov muag. Tsis txhob tsim cov hmoov av thiab aerosols. Siv cov cuab yeej uas tsis muaj teeb meem. Tiv thaiv hluav taws los ntawm electrostatic tawm chav.