Puas yuav titanium alloy corrode?

Titanium alloy yog cov khoom siv siab corrosion kuj. Vim nws zoo heev corrosion kuj, titanium alloys yog dav siv nyob rau hauv teb xws li aerospace, khoom kho mob, tshuaj lom neeg kev lag luam, thiab lwm yam.

Titanium alloy muaj qhov zoo corrosion kuj vim yog tsim cov oxide zaj duab xis ruaj khov ntawm nws qhov chaw. Cov oxide zaj duab xis no tuaj yeem tiv thaiv cov khoom tsis zoo xws li oxygen, dej, kua qaub, thiab alkali los ntawm kev ua kom cov titanium alloy ntxiv. Tsis tas li ntawd, cov khoom xws li txhuas, zinc, thiab hlau hauv titanium alloys kuj tuaj yeem ua rau lawv cov corrosion kuj.

Titanium alloys pom zoo corrosion kuj nyob rau hauv ntau yam corrosive ib puag ncig. Piv txwv li, titanium alloys tiv thaiv corrosion hauv dej tshiab thiab seawater. Nws tuaj yeem tiv taus corrosion los ntawm cov kua qaub uas muaj zog xws li sulfuric acid, hydrochloric acid, nitric acid, thiab sulfuric acid ntawm ib qho concentration. Tsis tas li ntawd, titanium alloys kuj muaj qhov zoo corrosion kuj rau chloride, alkaline daws, thiab lwm yam.

Txawm li cas los xij, nws yuav tsum tau muab sau tseg tias txawm hais tias titanium alloys muaj kev tiv thaiv corrosion siab, lawv tseem tuaj yeem raug kev puas tsuaj rau qee qhov chaw huab cua, xws li kub kub, kub siab, thiab cov xov xwm corrosive heev. Yog li ntawd, hauv cov ntawv thov tshwj xeeb, nws tseem yuav tsum xaiv cov khoom tsim nyog titanium alloy raws li cov xwm txheej los xyuas kom meej lawv cov corrosion kuj.
Nyob rau hauv peb lub neej niaj hnub, lo lus titanium alloy tsis zoo li yuav paub txog tib neeg, tab sis nws yog cov khoom siv uas nyiam siv hauv tshuab, kho mob, aviation thiab lwm yam kev lag luam. Niaj hnub no, peb yuav tsom mus rau cov lus nug tsis txaus ntseeg nyob rau hauv tsab xov xwm dhau los: Puas yog titanium alloys corrode? Los ntawm kev nkag siab txog nws qhov xwm txheej, tshuaj lom neeg muaj pes tsawg leeg thiab cov yam ntxwv, peb tuaj yeem daws qhov tsis paub tseeb.

Ua ntej, cia peb nkag siab qee yam khoom ntawm titanium alloys. Titanium alloy yog cov khoom siv alloyed nrog titanium thiab lwm yam hlau hlau uas muaj qhov zoo sib npaug ntawm lub zog thiab hardness. Qhov qis qis ua rau titanium alloy thawj qhov kev xaiv rau lub teeb titanium alloy tsim. Qhov no kuj piav qhia vim li cas peb feem ntau pom cov duab ntawm cov khoom no ntawm lub dav hlau, tsheb, thiab lwm yam.

Kev tiv thaiv corrosion ntawm titanium alloys yog cov cuab yeej uas nyiam ntau xim. "Non-corrosion" ntawm no tsis tau txhais hais tias nws yog kiag li tiv thaiv tag nrho cov corrosion, tab sis nws txhais tau hais tias nws muaj peev xwm ua tau zoo heev nyob rau hauv ntau yam crocodile ib puag ncig. Qhov no yog vim qee cov ntsiab lus alloying hauv titanium alloys, xws li txhuas, vanadium, magnesium, thiab lwm yam.

Qhov sib ntxiv ntawm chromium: Chromium yog "tus pab" nrog kev tiv thaiv corrosion zoo heev. Nws pab ua kom muaj cov yeeb yaj kiab dense, uas tau tiv thaiv qee cov tshuaj phem los ntawm kev ntsuas titanium alloy. Koj tuaj yeem xav tias nws yog nkuaj rau kev txhawb nqa, tiv thaiv kev nyab xeeb ntawm lub tsev fuabtais.

Molybdenum txoj kev pab: Ntxiv molybdenum rau titanium alloy yog zoo li muab nws nrog ib daim ntawm cov cuab yeej siv zog. Tshwj xeeb tshaj yog nyob rau hauv ib puag ncig muaj zog acid thiab alkali, molybdenum tuaj yeem txhim kho corrosion kuj ntawm titanium alloys, ua rau lawv muaj zog dua thaum ntsib cov teeb meem.

Nickel electroplating: Ntxiv nrog rau kev txhim kho cov khoom siv hluav taws xob ntawm cov hlau, npib tsib xee kuj tuaj yeem txhim kho nws cov kev tiv thaiv rau corrosive media. Qhov no tso cai rau peb los ntsuas cov titanium alloys hauv ntau qhov sib txawv nrog kev ntseeg siab ntau dua.

Lub corrosion kuj ntawm titanium alloy yog qhov muag heev.

Kev tiv thaiv dej hiav txwv: Koj puas tau xav paub vim li cas qee cov khoom siv sab nrauv, xws li cov nkoj hauv nkoj thiab dej hiav txwv, feem ntau siv cov titanium alloys? Yog vim li cas yog tias titanium alloys pom zoo tiv thaiv dej hiav txwv corrosion.
Tsis zoo li lwm yam hlau, nws muaj peev xwm tiv taus chloride ions hauv dej hiav txwv.

Acid thiab alkali tsis kam: Hauv peb lub neej niaj hnub, cov kua qaub los nag yuav yog ib qho teeb meem ib puag ncig peb feem ntau hnov ​​​​txog. Txawm li cas los xij, titanium alloy lub peev xwm los tiv thaiv cov kua qaub los nag yog qhov tseeb. Nws corrodes kuj maj mam nyob rau hauv cov kua xws li sulfuric acid thiab kua nrog ntau dua concentrations.

Kev ruaj ntseg ntawm cov organic tebchaw: Hauv kev lag luam tshuaj, ntau cov organic tebchaw feem ntau yuav tsum tau ua tiav. Titanium alloy qhia tau hais tias kev ruaj ntseg zoo nyob rau hauv ib puag ncig zoo li no thiab tsis ua rau corrosion, uas ua rau tib neeg siv nws nrog kev ntseeg siab ntau dua.

Txawm hais tias titanium alloys muaj kev tiv thaiv corrosion zoo heev, lawv tseem yuav tsum tau ua nruj me ntsis rau qee qhov chaw tshwj xeeb:

Muaj zog oxidizing ib puag ncig: Hauv qhov chaw oxidizing ntawm qhov kub thiab txias, titanium alloys yuav raug oxidation tshwm sim. Yog li ntawd, koj yuav tsum tau xyuam xim rau kev tiv thaiv kev ntsuas thaum siv nws nyob rau hauv xws li ib puag ncig.

Corrosion los ntawm hydrogen sulfate: Nyob rau hauv ib puag ncig hydrogen sulfate, corrosion kuj ntawm titanium alloys yuav raug sib tw. Hauv qhov no, peb yuav tsum xaiv cov khoom kom zoo dua lossis siv cov kev tiv thaiv ntxiv.

Zuag qhia tag nrho, titanium alloys tau dhau los ua cov khoom siv hnub qub hauv ntau qhov kev lag luam vim lawv cov kev ua tau zoo thiab kev tiv thaiv corrosion. Los ntawm kev tsim cov hlau alloy thiab tsim nyog rau kev xaiv ib puag ncig, peb tuaj yeem ua kom zoo dua ntawm nws cov corrosion kuj.