Thawj yog txhuas nws tus kheej, nws cov khoom tsis zoo li hlau, thiab nws tsis yooj yim rau hnov mob nrog cov pa oxygen hauv qhov. Txawm hais tias alumina tsim los ntawm cov tshuaj tiv thaiv tau ruaj khov, tsuas yog yuav tsum tau them nyiaj los tiv thaiv kev xeb, thiab cov tshuaj tiv thaiv oxidation tshwm sim ntawm qhov qeeb heev. Lub vaj huam sib luag fluorocarbon txhuas ua los ntawm txhuas yog qhov ruaj khov ua ntej ua thiab muaj kev tiv taus ntau dua tom qab ua tiav. Tom qab cov khoom dhau los, qhov no yog cov txheej txheem kev lag luam los tiv thaiv kev xeb hlau. Nws yog cov tshuaj tiv thaiv ntawm cov kua hu ua chromate thiab cov khoom lag luam ntawm qhov kub siab heev. Tom qab cov tshuaj fluorocarbon aluminium vaj huam sib luag raug ntxuav, txheej txheej chromium tau tsim rau saum cov khoom. Cov txheej txheej chromium muaj kev tiv thaiv zoo thiab tiv thaiv cov khoom los ntawm kev xeb. Vim tias chromium yog cov hlau ruaj khov, nws tsim cov txheej tiv thaiv uas tiv taus cov kua qaub thiab alkalis.
Tom qab passivation, nws tseem raug rau txheej txheej tshuab fluorocarbon. Fluorocarbon hais txog cov khoom siv hluavtaws hu ua polyvinylidene chloride cob. Cov txheej tsim los ntawm nws muaj kev ruaj khov dua, tsis ntshai dej, tsis ntshai tshav ntuj, tsis ntshai qhov kub hloov pauv, thiab yuav tsis deform lossis ploj mus ntev. Tus naj npawb ntawm cov tshuaj txau feem ntau peb lossis plaub zaug. Qhov kev txiav txim tau teeb tsa kom ntseeg tau tias lub phaj txhuas thiab ua tiav cov huab cua sab nraud tuaj yeem yog Cov tshuaj cuam tshuam nrog nws raug cais tawm tag nrho. Qhov no yog vim li cas fluorocarbon txhuas vaj huam sib luag yuav tsis xeb.
Cov khoom lag luam ua tau zoo los ntawm kev ua ntau txheej yog ruaj khov, thiab nws tau siv dav hauv cov tsev tsim khoom thiab kho kom zoo nkauj hauv tsev. Nws yog cov khoom siv dav tshaj plaws hauv tsev.
