Zr702 / Zr705 Zirconium Hlau Thiab Nws Alloy Daim Ntawv Thov

Zirconium thiab nws cov alloys muaj cov khoom siv hluav taws xob zoo heev thiab zoo heev corrosion kuj thiab cov khoom siv kho tshuab, tam sim no yuav luag txhua yam siv nyob rau hauv kev lag luam atomic zog, raws li cov qauv ntawm nuclear reactors, cladding thiab tswj rods cov ntaub ntawv.

1. Daim ntawv thov hauv reactors

Zirconium hlau yog tsim rau cov dej-txias reactors, thiab nws cov kev siv yog raws li nram no:

(1) Ua cov txheej txheem ruaj khov thiab txhim kho cov khoom siv roj. Txhawm rau ua cov raj siab thiab ua lwm yam khoom siv.

(2) Raws li cov khoom siv cladding rau cov khoom siv roj. Roj av cladding cov ntaub ntawv yuav tsum tau ib tug me me thermal neutron absorption cross-section, zoo corrosion kuj thiab txhua yam khoom, nyob rau hauv uas zirconium alloys yog txaus siab tshaj plaws. Tsis tas li ntawd, thermal conductivity thiab compatibility nrog roj kuj zoo.

(3) Zirconium yog ib qho zoo ntxiv rau uranium alloys. Lub hydride ntawm zirconium tuaj yeem siv los ua tus decelerator hauv reactors.

Tswb yog ib qho khoom siv zoo tshaj plaws rau cov dej txias reactors. Vim nws zoo corrosion kuj, tswb yuav siv tau nyob rau hauv lub xeev liab qab tsis muaj cladding. Cov noodles yog cov resistant rau irradiation thiab muaj lub neej ua haujlwm ntev. Tam sim no, yuav luag tag nrho cov dej-txias reactors rau cov nkoj siv tswb los ua cov kav dej.

2. Kev siv tshuaj lom neeg kev lag luam

Vim tias zirconium muaj kev tiv thaiv zoo heev rau corrosion los ntawm acids, alkalis thiab lwm yam xov xwm, nws tau siv dav hauv cov khoom siv tshuaj. Xws li zirconium tuaj yeem siv los tsim cov tshuaj tiv thaiv corrosion-resistant towers, twj tso kua mis, tshav kub exchangers, li qub, stirrers, nozzles, thermocouple casing, conduit thiab ntim hauv ob sab phlu thiab hais txog.

3. Lwm yam kev siv

Zirconium, noodles hmoov hauv kev lag luam tube hluav taws xob tuaj yeem siv los ua tus neeg sawv cev zoo degassing, Zr-16A1 alloy hmoov thiab siab pob qhov rooj yog ib qho zoo heev uas tsis yog-dissipative degassing agent. Zirconium cov xov hlau thiab cov ntawv tuaj yeem siv los ua cov tuav lub rooj vag, cov tuav cathode thiab cov ntaub ntawv rooj tog. Kev siv tswb lub siab melting point thiab siab emissivity, muaj tswb (W-Hf alloy) ua incandescent filament, cathode ntawm X-ray raj, electrode ntawm high-voltage gas paug raj thiab rectifier Cheebtsam.

Hauv kev lag luam pyrotechnic, zirconium thiab hmoov lead yog siv los ua detonators thiab primers. Zirconium hmoov thiab zirconium nitrate tuaj yeem siv los ua cov duab flash hmoov.

Zirconium hlau raws li cov khoom siv alloying muaj ntau yam tseem ceeb hauv kev lag luam smelting.

Hauv cov txheej txheem steelmaking, zirconium yog lub zog deoxidizing thiab denitrifying lub caij. Zirconium refines lub austenite nplej nyob rau hauv steel, thiab leej faj tuaj yeem ua ke rau hauv zirconium sulfide, yog li tiv thaiv cov thermal embrittlement ntawm hlau. Zirconium kuj txo cov teebmeem ntawm kev laus thiab txhim kho qhov kub thiab txias ntawm cov hlau. Rau magnesium alloys, aluminium alloys, zirconium yog qhov zoo tshaj plaws cov nplej refiner.

Qhov sib ntxiv ntawm ib qho me me ntawm cov hlau lead txhim kho qhov tsis kam ntawm nickel-mining alloys (muaj li 80% Ni thiab 20% Cr). Tsis tas li ntawd, thaum txo cov tungsten oxides, ntxiv 0.1 ~ 3% ntawm cov hlau lead tuaj yeem tswj tus nqi ntawm cov qoob loo loj hlob.

Zirconium oxides yog cov khoom siv raw rau cov kua qaub-resistant enamel thiab cov ntaub ntawv refractory. Qee cov ntsiab lus ntawm zirconium yog siv los ua dyes thiab ua catalysts rau cov tshuaj tiv thaiv organic. Hauv kev lag luam iav, zirconium chromium yog siv los ua ib qho ntxiv rau cov iav tshwj xeeb.

Carbide ntawm noodles (HfC) melting point ntawm 3890C, thiab tantalum carbide (TaC) 1:4 muaj pes tsawg leeg tom qab (HfC-4TaC), lub melting point ntawm 3940C, yog lub siab tshaj plaws melting point ntawm ceramic khoom. Carbide noodles yog ib qho nyuaj heev thiab tuaj yeem siv los ua cov khoom ntse thiab abrasive.