Hmoov Txheej Xim Tshuab

1. Zinc alloy yog cov nyiaj dawb-dawb hlau, tus qauv electrode muaj peev xwm yog - 0.736V, nws ishardly corroded nyob rau hauv ib txwm huab cua, thiab ib tug dawb corrosion khoom yuav tsim nyob rau hauv cov huab cua ntub thiab nyob rau hauv lub xub ntiag ntawm carbon dioxide. Nws yog zinc carbonate yooj yim.

Tom qab electroplating ntawm zinc alloy, peb tuaj yeem ua pvd txheej, siv arc ion pvd txoj cai kom tau txais cov txheej txheem tiv thaiv ntawm cov hlau nto.

Lub hauv paus ntsiab lus ntawm lub tshuab nqus tsev hluav taws xob arc ion txheej yog ua raws li cov cathode txias, nws tus kheej-sustained arc tawm plasmaevaporation, cov khoom siv ionization, sib txuas cov kev tsis sib haum xeeb los txhim kho lub zog thiab kev ua haujlwm ntawm cov khoom tso tawm, thiab txhim kho cov khoom ntawm txheej. Nws tuaj yeem tso cov coatings rau saum npoo ntawm cov hlau thiab tsis yog hlau.

Ib qho me me ntawm cov carbonate yooj yim tuaj yeem thaiv cov pinholes ntawm txheej txheej. Txawm hais tias nws cuam tshuam rau cov tsos, nws tuaj yeem txhim kho kev tiv thaiv kev ua haujlwm ntawm txheej txheej ntawm cov khoom siv kho vajtse. Ntau cov khoom siv corrosion tsis tu ncua. Cov tsos mob yuav txo lub sij hawm tiv thaiv anode ntawm zinc zaj duab xis rau substrate.

2. Lub peev xwm electrode ntawm cov khoom siv hlau yog - 0.326V, thiab zinc zaj duab xis ntawm cov hlau yog cov yeeb yaj kiab anodicprotective. Raws li lub hauv paus ntsiab lus ntawm electro-corrosion, thaum cov kev mob ntawm electro-corrosion yog mature, lub anode dissolves thiab cov cathode yog plated. Cov khoom siv rau lub qhov rooj thiab qhov rais yog plated nrog zinc zaj duab xis raws li txoj cai no los txhim kho nws cov corrosion kuj.

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