Passivation yog kev kho tshuaj lom neeg tsim los tiv thaiv cov ntaub ntawv ferrous xws li steel thiab xeb, yog li kev txhim kho lawv cov tsos, kev ua tau zoo thiab huv si. Cov txheej txheem cuam tshuam nrog cov tshuab raj hlau hauv cov tshuaj acidic xws li nitric acid lossis citric acid los tshem tawm cov hlau los ntawm qhov chaw du thiab polished.
Txij li thaum passivation tsis yog txheej txheem txheej txheem, tsis tas yuav tsum yog daim npog ntsej muag thiab tsis muaj tuab ntxiv rau cov tshuab. Cov tshuaj acidic tshem tawm cov hlau thiab xeb los ntawm cov chaw thiab cov zaj duab xis tiv thaiv ntawm cov chromium lossis npib tsib xee ntawm cov hlau nto. Txawm hais tias nitric acid yog cov tsoos passivating tus neeg sawv cev, citric acid daws tau dav siv vim lawv lub sijhawm luv luv.
Cov ntu passivated muaj xeb zoo thiab yog qhov zoo rau kev siv sab nraum zoov. Txawm li cas los xij tseem ceeb, passivation yog txoj kev kho mob saum npoo av, los ntawm kev lag luam kho mob, uas muaj cov khoom muaj txiaj ntsig zoo rau cov khoom kom tsis muaj khoom thiab pabcuam kev pabcuam.
Txawm li cas los xij, passivation tuaj yeem ua rau lub sijhawm ntau ntau vim tias cov khoom siv no yuav tsum tau ua tiav cov khib nyiab, roj rau lossis lwm yam paug. Thaum lub sij hawm immersion yog feem ntau cov txheej txheem passivation vim nws lub sijhawm nrawm thiab kev ua tau zoo ib yam, acid txau tseem muaj kev xaiv acid ntxiv.(来源: ug 学习堂小胥收徒)
Bishen tsom rau cov kev lag luam siab-precision Xws li Anodizing (ntau cov xim muaj), npib tsib xee thiab lwm yam yuav tsum tau ua kom tau raws li kev kho mob nruj, uas yuav tsum tau ua kom tau raws li kev kho mob ntawm kev kho mob, thiab lwm yam, siv tsheb thiab lwm yam lag luam. Kev vam khom rau cov cuab yeej siv tau zoo heev thiab kev tswjhwm nruj, peb ua kom cov txheej txheem zoo ntawm tag nrho cov txheej txheem ntawm kev tiv thaiv micron tag nrho los ntawm kev tiv thaiv lub davhlau ya.
