Txawm hais tias chromium yog tsis zoo dua hlau nyob hauv cov kab sib lawv liag, nws muaj zog cov khoom siv zog. Ib daim ntawv tso cai yoojyim yog tsim tau yooj yim ntawm cov nplais ntawm chromium txheej hauv qhov chaw. Tej zaum yuav muaj dej txaus rau ntawm daim ntawv tso cai yav dhau los tom qab cov ntawv sau tau zoo, thiab tus cwj pwm ntawm electrode yog sib npaug rau cov nyiaj. Yog li, chrome plating ntawm cov hlau yog ib qho anodized lo. Raws li nrog rau lwm lub cathodic coatings, lub substrate yuav tiv thaiv tsuas yog hais tias lub txheej yog ntom thiab dawb ntawm voids. Kev tuag tsis muaj zog ntawm chromium plating yog qhov muaj pores thiab kab nrib pleb, thiab tus brittleness ntawm chromium txheej yog tus loj. Thaum lub cheeb tsam hauv cheeb tsam raug muab los sis cuam tshuam, qhov txheej txheem yog nws ntes. Nyob rau hauv cov ntaub ntawv no, cov hlau matrix ntsib cov ya raws hauv huab cua ntub thiab kis tau los ntawm cov pores ntawm chromium txheej, seeping rau ntawm qhov matrix hlau, yog li ntawd cov khub niam txiv chromium thiab ferroelectric tsim ib lub roj teeb. Lub sijhawm no, cov hlau nyob hauv chromium thiab ferroelectric nkev yog qhov tseem ceeb tshaj qhov ntawm chromium, uas ua raws li qhov anode corrosion, thiab cov khoom txhim kho corrosion yog xeb, thiab overflows ntawm lub qhov hws ntawm lub chromium rau tus dej nyab . Raws li lub sijhawm no, qhov dej nyab yuav nthuav dav thiab nce, thiab qhov tshwm sim dhau ntawm tag nrho cov ntu haujlwm.
Qhov tshwm sim no tshwm sim ntau dua hauv cov npoo ntawm cov hlau qhov chaw thiab cov thwj cim. Vim hais tias cov seem no yog sheared, cov qauv yog xoob thiab tsis muaj oxide nplai. Kev txhuam los ntawm kev ua kom ntev yog yooj yim tshwm sim thaum cov kua qaub, thiab lub hau npog ntawm lub npoo thiab chromium txheej yog cov nyias. Lub porosity yog tus high school, thiab reddish-xim xeb heev dua yuav tshwm.
Yuav kom txo qhov tshwm sim ntawm cov xwm txheej saum toj no, cov kev ntsuas nram no tuaj yeem tau txais:
(1) Txhim kho qhov npoo ntawm qhov substrate npo;
(2) Ntxiv zog rau txheej txheem plating;
(3) ua kom cov thickness ntawm chrome plating nyob rau hauv cov neeg mob tau;
(4) Ib txheej chromium tsis siv tsuas yog tsim nyog;
(5) Txaus txim siab rau qhov kev sib haum xeeb ntawm kev daws teeb meem raws li kev tso cai los ntawm cov txheej txheem txheej txheem;
(6) Tom qab plating, ntxuav nws nrog dej kub thiab sai sai;
(7) Nqa roj foob rau kev kub ntxhov