1.How ua cov txheej txheej tus kheej cov cuab yeej cuam tshuam rau kev ua kom xeb?
Cov ntshiab zinc txheej: cia siab rau "kev ua yeeb yam anodic" (zno refrod Txawm li cas los xij, qhov dawb xeb yooj yim ntxuav nrog nag, ua rau muaj qhov ntev ntev- lub sij hawm corrosion.
Zinc Alloy txheej: tsis muaj ib qho kev txi ua kom loj loj thiab tso siab rau ib txheej sib xyaw kom sib cais kom muaj qhov nruab nrab corrosive. " Nws muaj lub siab tawv tawv (HV 200-300), hnav tsis kam, thiab tsis yooj yim los ntawm kev sib txhuam.
Zinc -} Ale{ 1}}} {{{{{{{}}}}} ntawm cov ntshiab zinc coese. Nws kuj tseem tuaj yeem "kho tus kheej" tom qab khawb (mg² + txhawb nqa kev tsim ntawm zaj yeeb yaj kiab passivation tshiab).
2.How ua txheej txheej tuab cuam tshuam rau corrosion tsis kam?
Txheej thickness ncaj qha txiav txim siab nws "tiv thaiv kev tiv thaiv" {}} Thicker txheej ntau dua zinc (lossis cov khoom sib xyaw ua ke) thiab txuas ntxiv rau lub neej corrosion. Ob qho yog qhov sib txheeb zoo (hauv qab ib puag ncig).
Piv txwv li, hauv qhov chaw nyob sab nraud (xws li thaj chaw muaj nyob sab nraud), thib ib, {{1} {{1} {{1} {{1} {{1} {
Nco tseg: Thicker tsis yog ib txwm zoo dua. Thaum cov tuab tuab tshaj 350G / ㎡, ntshiab zinc txheej zinc me ntsis "(nquag yuav poob qis thaum khoov tau ua kom haum rau corrosion. Ib txoj kev sib raug zoo yuav tsum tau txiav txim siab raws li cov xwm txheej kev thov tshwj xeeb.
3.Yog ua txheej txheej sib xws thiab tsis xws luag cuam tshuam rau corrosion tsis kam?
Pluag Plating / Pinholes: Thaum lub sijhawm tsim khoom (yog tias cov txheej txheem txheej txheem tsis huv) Cov chaw no ncaj qha nthuav tawm cov txheej txheem corrosion corrosion tau hu ua "me me cathode (ZN)" thiab ua kom nrawm}
Txheej txheej ntxiv: Yog tias cov txheej zinc tsis nruj rau lub substrate (piv txwv li, yog tias lub ntsej muag rouging tsis txaus), "Zinc Peeling tsis txaus siab) Cov chaw ua yeeb yam poob lawv cov kev tiv thaiv thiab nrawm nrawm.
4.How ua cov kev mob sab nrauv cuam tshuam rau corrosion tsis kam?
Residual Roj: Yog hais tias qhov tsis tiav, cov roj tsis tiav ntawm cov npoo av yuav tsim ib qho zinc daws teeb meem rau lub zinc thiab ua rau muaj kev sib tw ua plating.
Residual Oxide nplai: yog tias pickling yog tsis tiav, lub duas oxide nplai seem yuav hnov ib qho zorn alloy txheej, txo cov txheej txheem ntawm cov txheej thiab ua rau tawg.
Cov nplaim roughness: ntau dhau ntawm cov chaw substrate (RA <0.5μm) yuav txo cov kev sib cais ntawm cov kev daws teeb meem ntawm zinc kev daws teeb meem thiab cov txheej sib xyaw ua kom muaj peev xwm ua rau muaj cov ntaub nyias nyias. Cov kev ntxhib ntau dhau (RA> 5μm) yuav ua rau txheej txheej tsis zoo (nyias txheej hauv cov protrions thiab tuab cov txheej txheem ntawm cov protrusions), ua rau thaj chaw tsis muaj zog rau corrode ua ntej.
5.How ua li hom ntawm corrosive media cuam tshuam rau corrosion tsis kam?
Cov dej nruab nrab ib puag ncig (xws li cov dej qhuav thiab huv si): Zinn ib leeg los ntawm electrochemical corrosion (zn + →
Acidic ib puag ncig (xws li so₂ thiab organic acids hauv cov nroj tsuag tshuaj lom neeg (zn) → →}}}} h₂o). Tus nqi corrosion yog 3-5 zaug uas yog ib puag ncig nruab nrab.
Alkaline ib puag ncig (xws li Naoh thiab Ammonia vapor nyob rau hauv zas xim (xws li zinc ploj ntawm tus nqi zoo li cov uas nyob hauv ib puag ncig acidic.
Cov tshuaj pleev ntsev rau ib puag ncig (xws li cov neeg hauv cov txheej txheem marraphy {{} Meltive Electrochion "(CLTY} electr electr້ອນ Qhov no yog ib qho ntawm cov muaj kev txhim kho loj tshaj plaws (txhua xyoo corrosion tuaj yeem ncav cuag 20-30g / ㎡).