Cov khoom, kev siv thev naus laus zis thiab daim ntawv thov kev cia siab ntawm zirconium alloys
Raws li cov khoom siv hlau tseem ceeb, zirconium alloy muaj txog 0.026% ntawm lub ntiaj teb crust, uas yog 2.5 npaug ntawm cov ntsiab lus ntawm tooj liab. Nws cov khoom tshwj xeeb ntawm lub cev thiab tshuaj lom neeg, xws li cov ntsiab lus siab melting, nruab nrab ntom ntom, lub zog zoo heev, qis expansion coefficient thiab me me elastic modulus, nrog rau corrosion kuj nyob rau hauv ntau yam xov xwm, ua rau nws nyob rau hauv ib qho tseem ceeb txoj hauj lwm nyob rau hauv niaj hnub kev lag luam.
1. Kev ua tau zoo ntawm zirconium alloy
Zirconium alloy paub txog nws qhov siab melting point, corrosion kuj, zoo heev zog thiab kev ua tau zoo. Tshwj xeeb, ob hom zirconium alloys, Zr-Sn thiab Zr-Nb, muaj cov txheej txheem ntau lawm, thiab qib xws li Zr-2, Zr-4 thiab Zr-2.5Nb , yog dav siv nyob rau hauv ntau yam industrial teb.
2. Kev siv thev naus laus zis ntawm zirconium alloy
Kev siv thev naus laus zis ntawm zirconium alloy feem ntau suav nrog extrusion txoj kev thiab forging txoj kev.
Zirconium alloy extrusion txoj kev
Zirconium alloy kav thiab tuav yog cov khoom siv tseem ceeb hauv nuclear reactors, suav txog li 75% txog 80% ntawm tag nrho cov kev siv. Cov kav dej thiab cov kav dej no feem ntau yog tsim los ntawm kev tsim extrusion. Txhawm rau txhim kho cov txheej txheem extrusion thiab txo cov khoom tsis xws luag, lubricants tshwj xeeb tau tsim.
Zirconium alloy forging
Forging yog ib kauj ruam tseem ceeb hauv kev tsim cov zirconium alloys, uas yog lub hom phiaj los rhuav tshem cov qauv cam khwb cia thiab txhim kho cov khoom hlau. Cov txheej txheem forging muaj ntau yam tsis xws li cua sov specifications, forging kub thiab forging khoom. Lub forging kub yog feem ntau tswj ntawm 950-1100 degree, thiab nruab nrab thiab siab kub kuj rauv yog siv rau cua sov.
3. Daim ntawv thov teb ntawm zirconium alloys
Nuclear kev lag luam
Zirconium alloys yog siv los ua cov khoom tseem ceeb xws li roj cladding raj thiab tswj cov pas nrig qhia cov raj hauv nuclear reactors. Lawv cov neutron absorption uas tsis tshua muaj nyob rau hauv cheeb tsam thiab zoo heev corrosion kuj ua rau lawv ib tug indispensable khoom nyob rau hauv nuclear kev lag luam.
Dej hiav txwv tob thiab qhov chaw tshawb nrhiav
Zirconium alloys muaj peev xwm siv tau zoo hauv qhov chaw tshwj xeeb xws li kev sib sib zog nqus dej hiav txwv thiab qhov chaw tshawb nrhiav vim lawv cov thermal expansion coefficient tsawg thiab tsis kam rau hluav taws xob puas.
Kev lag luam tshuaj
Zirconium alloys muaj zog corrosion kuj mus rau ntau yam acidic ib puag ncig, yog li lawv tau dav siv nyob rau hauv li qub, acid-resistant twj thiab lwm yam khoom siv hauv kev lag luam tshuaj.
Kev kho hniav kev lag luam
Zirconium oxide ceramics tau dhau los ua cov khoom tseem ceeb hauv kev kho hniav vim lawv cov tshuaj lom neeg ruaj khov thiab biocompatibility.
Biomedical
+ dual-theem thiab ib-theem zirconium alloys muaj biocompatibility zoo nrog tib neeg cov ntaub so ntswg thiab muaj peev xwm xaiv rau kev phais hniav alloys.
4. Ntsiab rau yas txoj kev siv tshuab ntawm zirconium alloys
Yas txoj kev ntawm zirconium alloys muaj xws li forging, extrusion thiab dov. Muaj ntau yam uas cuam tshuam rau nws cov yas ua deformation, feem ntau suav nrog tus nqi strain, kub thiab lubrication tej yam kev mob. Kev ua kom zoo dua cov kev ntsuas no yog qhov tseem ceeb rau kev txhim kho kev ua tau zoo thiab cov khoom zoo ntawm zirconium alloys.
Nrog kev nce qib ntawm kev siv thev naus laus zis thiab kev nthuav dav ntxiv ntawm kev lag luam, daim ntawv thov kev cia siab ntawm zirconium alloys yuav dav dua. Nyob rau hauv lub neej yav tom ntej, zirconium alloys yuav qhia lawv qhov tshwj xeeb zoo thiab muaj txiaj ntsig hauv ntau thaj chaw.
