Zirconium: Tus Vaj Ntxwv Corrosion hauv Kev Lag Luam Tshuaj

Hauv kev lag luam siab -kawg kev lag luam xws li tshuaj lom neeg, tshuaj, thiab tshuaj tua kab, kev tiv thaiv corrosion ntawm cov khoom siv ncaj qha cuam tshuam rau kev nyab xeeb ntawm kev tsim khoom, purity khoom, thiab cov nqi khiav lag luam. Thaum stainless hlau thiab npib tsib xee raws alloys tsis muaj zog acid thiab alkali xov xwm, ib tug tsawg hlau hu ua "zirconium" tau dhau los ua cov khoom siv tswv yim los daws cov teeb meem corrosion heev vim nws cov corrosion kuj zoo heev. Kab lus no yuav delve rau hauv cov ntsiab lus zoo thiab kev siv zirconium hauv kev siv tshuaj lom neeg, pab koj xaiv cov kev txawj ntse rau kev kho dua tshiab ntawm cov kab ntau lawm.

Zirconium tsis yog cov khoom siv "universal", tab sis nyob rau hauv nws cov txiaj ntsig zoo, nws yuav luag tsis hloov. Its core competitiveness lies in the formation of a dense, stable, and self-healing zirconia (ZrO ₂) passivation film on its surface.
1, Zirconium kub corrosion daim ntawv thov ntau yam:

• Boiling hydrochloric acid thiab sulfuric acid ntawm ntau yam concentrations: Zirconium exhibits zoo heev corrosion kuj nyob rau hauv sulfuric acid nrog concentrations hauv qab no 70% thiab tag nrho cov concentrations ntawm hydrochloric acid hauv qab boiling point, thiab nws cov kev ua tau zoo txawm zoo dua tantalum thiab Hastelloy alloys.
• Nitric acid thiab phosphoric acid: Zirconium kuj ruaj khov thiab txhim khu kev qha hauv ntau qhov ntau ntawm nitric acid thiab phosphoric acid, nrog rau qhov hnyav hnyav uas muaj chloride ion impurities.
• Organic acids: muaj kev tiv thaiv zoo rau cov organic acids xws li formic acid thiab acetic acid.
• Muaj zog alkaline tov: Zirconium kuj pom zoo stability nyob rau hauv muaj zog alkaline daws xws li sodium hydroxide, uas yog superior rau titanium thiab stainless hlau.

2, Qhov zoo tseem ceeb:

• Kev tiv thaiv rau chloride ion pitting corrosion: Qhov no yog qhov kev txiav txim siab zoo ntawm zirconium tshaj stainless hlau thiab titanium alloys. Nyob rau hauv ib puag ncig acidic uas muaj Cl ⁻, zirconium tsis tshua muaj pitting corrosion thiab kev nyuaj siab corrosion cracking.
• Txo cov khoom sib kis: Tus nqi qis qis heev txhais tau hais tias cov cuab yeej yuav tsis qhia cov hlau ion paug rau hauv cov txheej txheem nruab nrab, uas yog ib qho tseem ceeb heev rau kev tsim cov khoom siab tshaj - purity chemicals, pharmaceutical intermediates, thiab electronics chemicals.

Cov khoom siv zirconium tau hloov zuj zus los ntawm ib qho kev tiv thaiv mus rau ib qho kev ua tiav ntawm cov txheej txheem tseem ceeb.
1, Core reactor thiab ntauwd:

• Zirconium composite phaj reactor: Ua los ntawm "zirconium + steel" explosive composite phaj, nws tsis tsuas yog ua kom lub zog ntawm cov khoom, tab sis kuj endows lub puab phab ntsa nrog zoo heev corrosion kuj, ua rau nws yog ib qho zoo tagnrho xaiv rau loj pressurized reactors.
• Integrated zirconium reactor: haum rau me me thiab nruab nrab -size synthesis reactions nrog siab purity siab heev.
• Distillation ntauwd thiab rho tawm ntauwd: Cov khoom siv sab hauv (xws li cov tais thiab ntim khoom) thiab lub plhaub yog ua los ntawm cov khoom siv zirconium, siv rau kev sib cais thiab kev ua kom huv ntawm cov xov xwm corrosive heev.

2, Thaum tshav kub kub exchanger khoom:

• Zirconium plhaub thiab raj kub exchangers thiab coil heat exchangers yog qhov kev xaiv zoo tshaj rau kev tuav siab -kub, siab - siab, thiab corrosive nruab nrab kub hloov tej yam kev mob. Nws cov thermal conductivity siab ua kom muaj kev hloov pauv tau zoo heev.

3, Pipelines, li qub, thiab twj tso kua mis:

• Ua tiav zirconium pipeline system, lub ntiaj teb li qub, pob li qub, cov twj tso kua mis centrifugal, thiab lwm yam. ua lub hauv paus tseem ceeb ntawm kev txhim kho corrosion - tiv thaiv kev thauj mus los, ua kom muaj kev ruaj ntseg ntawm tag nrho cov txheej txheem tsim khoom.

Cov neeg muas zaub tshiab rau cov khoom siv zirconium tej zaum yuav muaj kev tsis ntseeg txog lawv cov nqi pib nqis peev. Txawm li cas los xij, los ntawm qhov kev xav ntawm lub neej voj voog tus nqi (LCC), cov khoom siv zirconium feem ntau yog tus nqi ntau dua - kev xaiv zoo.

• Txo cov nqi qis thiab kev txij nkawm: Lub neej ntev ntawm cov cuab yeej zirconium feem ntau yog ob peb zaug lossis txawm tias kaum tawm lub sijhawm ntev dua li cov khoom siv stainless hlau lossis Hastelloy, txo qis qis qis qis thiab nquag hloov cov nqi los ntawm cov khoom siv corrosion.
• Txhim kho cov khoom zoo thiab sib xws: tshem tawm cov hlau ion ua kuab paug los ntawm cov khoom siv corrosion, ua kom cov purity thiab zoo stability ntawm cov khoom, tshwj xeeb tshaj yog cov nqi siab - ntxiv cov khoom.
• Ua kom muaj kev ruaj ntseg ntau lawm: Zam kev nyab xeeb thiab ib puag ncig kev raug mob tshwm sim los ntawm cov khoom siv perforation thiab to, nws implicit tus nqi yog immeasurable.
• Kev txiav txim siab siv tau: Thaum koj cov txheej txheem nruab nrab suav nrog siab -kub hydrochloric acid, tov kua qaub, muaj zog oxidizing acids uas muaj chloride ions, thiab cov khoom uas twb muaj lawm (xws li stainless hlau, titanium) muaj lub neej luv luv, nws yog lub sijhawm zoo tshaj plaws los txiav txim siab kho dua tshiab rau cov khoom siv zirconium.

• Recognize limitations: Zirconium is not resistant to hydrofluoric acid, concentrated sulfuric acid (>70%), ntub chlorine roj, thiab aqua regia ntawm qhov kub thiab txias. Ua ntej xaiv, nws yog ib qho tsim nyog yuav tsum muaj kev sib txuas lus txaus nrog tus neeg muag khoom txog qhov nruab nrab ib puag ncig.
• Them mloog mus rau cov txheej txheem tsim: Vuam ntawm zirconium yuav tsum tsis tshua muaj siab purity inert gas tiv thaiv, uas xav tau ib theem siab ntawm craftsmanship thiab kev paub los ntawm cov chaw tsim tshuaj paus. Nws yog ib qho tseem ceeb los xaiv cov neeg muag khoom nrog keeb kwm paub tab thiab muaj kev vam meej ntawm cov khoom siv zirconium.
• Tsim thiab txij nkawm: tsim nyog tsim (kom tsis txhob crevice corrosion) thiab cov txheej txheem kev ua haujlwm (kom tiv thaiv hydrogen embrittlement) yog qhov tseem ceeb los ua kom lub sijhawm ntev - lub sijhawm ruaj khov ntawm cov khoom siv zirconium.

Nyob rau niaj hnub no qhov nce siab, siab purity, thiab cov txheej txheem tshuaj lom neeg muaj kev ntseeg siab, zirconium tsis yog "lwm" cov ntaub ntawv, tab sis "tus qauv teb" kom kov yeej qhov xwm txheej huab cua corrosive. Kev nqis peev hauv cov khoom siv zirconium tsis yog tsuas yog yuav lub tshuab xwb, tab sis kuj tseem yuav yuav ib lub sijhawm ntev -kev pov hwm "kev nyab xeeb thiab kev ruaj ntseg" rau koj cov txheej txheem tseem ceeb.
Hu rau peb tam sim kom tau txais cov ntaub ntawv tiv thaiv corrosion ntawm cov ntaub ntawv zirconium rau koj cov txheej txheem tshwj xeeb, lossis teem caij rau ib qho - ntawm - ib qho kev xaiv kev sab laj nrog peb cov kws tshaj lij engineers los tshawb txog qhov muaj peev xwm tshiab ntawm kev siv zirconium thev naus laus zis los txo cov nqi thiab nce kev ua haujlwm rau koj lub lag luam.

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