Corrosive yam ntxwv ntawm Electroplating Environments
Electroplating yog siv dav hauv kev tsim khoom lag luam kom tso cov hlau nyias nyias mus rau hauv cov substrates rau kev tiv thaiv corrosion, zoo nkauj tiav, lossis txhim kho cov khoom hluav taws xob. Ntau lub tshuab electroplating da dej yuav tsum tau tswj qhov kub thiab txias kom tswj tau qhov zoo ntawm cov tshuaj tiv thaiv, txheej txheej, thiab plating efficiency. Yog li ntawd, cov twj tso kua mis immersion feem ntau tau nruab rau hauv plating tso tsheb hlau luam los tswj qhov kub ntawm da dej.
Ib qho kev sib tw tseem ceeb hauv electroplating systems yog muajchloride-muaj cov tshuaj. Chloride ions feem ntau ntxiv rau plating da dej los txhim kho hluav taws xob conductivity, stabilize hlau ions, los yog txhim kho deposition zoo. Txawm li cas los xij, chloride ions kuj tseem ua phem rau ntau cov hlau thiab tuaj yeem ua kom cov txheej txheem corrosion hauv cov khoom siv cua sov.
Thaum cov cua kub cua sov ua haujlwm hauv cov tshuaj chloride-ib puag ncig nplua nuj, lub tshuab cua sov yuav maj mam degrade vim yog tshuaj tua kab mob. Corrosion tuaj yeem txo qhov kev hloov pauv ntawm cov cua sov, ua kom cov kab mob plating, thiab thaum kawg ua rau lub rhaub tsis ua haujlwm.
Vim li no,titanium immersion rhaubfeem ntau xaiv rau cov tshuab electroplating uas muaj chloride ions. Titanium muab kev tiv thaiv tshwj xeeb rau cov tshuaj chloride-induced corrosion, tso cai rau cov cua sov kom muaj kev ruaj ntseg txawm tias lub sijhawm ua haujlwm tsis tu ncua hauv cov txheej txheem plating hnyav.
Tsim cov txheej txheem tiv thaiv Titanium Oxide
Kev tiv thaiv corrosion ntawm titanium feem ntau yog los ntawm kev tsim ntawm nyias tab sis ruaj khov oxide zaj duab xis ntawm nws qhov chaw. Thaum titanium raug rau oxygen lossis dej molecules, nws sai sai tsim ib txheej ntawm titanium dioxide. Cov txheej txheej oxide no ua kom nruj rau cov hlau nto thiab ua raws li kev tiv thaiv kev tiv thaiv uas tiv thaiv cov tshuaj tua kab mob ntxiv.
Nyob rau hauv ib puag ncig electroplating, qhov passive oxide zaj duab xis no muab kev tiv thaiv ntau yam tshuaj corrosive tam sim no hauv plating da dej. Tsis zoo li cov khoom siv corrosion uas yuav flake tawm los yog yaj, titanium oxide txheej tseem ruaj khov rau cov hlau hauv qab.
Ib qho tseem ceeb ntawm cov txheej txheem tiv thaiv no yog nwstus kheej - kho muaj peev xwm. Yog hais tias cov oxide zaj duab xis yog mechanically puas los yog khawb, ib tug tshiab tiv thaiv txheej yuav sai sai tsim thaum lub titanium nto reacts nrog oxygen nyob rau hauv ib puag ncig.
Qhov kev rov tsim dua tshiab ntawm cov txheej txheem oxide tiv thaiv no tso cai rau titanium los tuav lub sij hawm ntev - corrosion kuj txawm nyob rau hauv cov tshuaj aggressively.
Chloride Ion Resistance piv nrog rau lwm cov hlau
Chloride ions paub tias tshwj xeeb yog kev puas tsuaj rau ntau cov hlau uas nquag siv. Hauv cov hlau tsis muaj steel, piv txwv li, chloride ions tuaj yeem rhuav tshem cov txheej txheem chromium oxide uas ib txwm tiv thaiv cov hlau nto. Thaum cov yeeb yaj kiab tiv thaiv no raug cuam tshuam, cov txheej txheem corrosion hauv zos xws li pitting lossis crevice corrosion tuaj yeem tsim.
Pitting corrosion yog tshwj xeeb tshaj yog txaus ntshai nyob rau hauv cov khoom cua sov vim hais tias nws muaj peev xwm nkag mus tob rau hauv cov hlau nto thaum tseem tsis yooj yim mus ntes thaum lub sij hawm niaj hnub tshuaj xyuas. Nyob rau tib lub sijhawm, cov pits no tuaj yeem ua rau lub tshuab cua sov tsis muaj zog thiab ua rau muaj kev ua haujlwm tsis zoo.
Titanium ua kom pom kev tiv thaiv ntau dua rau cov tshuaj chloride-induced pitting corrosion ntau dua stainless hlau alloys. Cov yeeb yaj kiab titanium oxide ruaj khov tseem siv tau txawm tias muaj cov tshuaj chloride- nplua nuj cov kev daws teeb meem uas cov hlau tsis muaj steel yuav muaj kev puas tsuaj sai.
Vim tias qhov kev tiv thaiv no, titanium cov cua sov tuaj yeem ua haujlwm tau zoo hauv cov da dej electroplating uas muaj cov tshuaj chloride ions tsis muaj kev puas tsuaj loj heev.
Kev ruaj ntseg nyob rau hauv qhov kub thiab txias
Cov txheej txheem electroplating feem ntau ua haujlwm nyob rau hauv qhov ntsuas kub tswj uas txhawb nqa cov hlau zoo ib yam. Cov tshuab cua sov tuaj yeem tswj tau qhov kub ntawm da dej nyob qhov twg los ntawm nruab nrab mus rau qib siab nyob ntawm qhov tshwj xeeb plating chemistry.
Kev kub siab dua feem ntau ua rau cov tshuaj tiv thaiv kab mob thiab tuaj yeem ua rau muaj kev txhim kho corrosion hauv ntau cov ntaub ntawv. Txawm li cas los xij, titanium muaj zog tiv thaiv corrosion txawm tias thaum raug kub hnyiab hauv cov tshuaj lom neeg.
Kev tiv thaiv oxide zaj duab xis ntawm titanium tseem nyob ruaj khov nyob rau hauv ntau qhov kev khiav hauj lwm kub, cia cov hlau tswj nws cov corrosion kuj thaum lub sij hawm tas mus li cua sov mus.
Kev ua haujlwm ruaj khov ntawm qhov kub siab yog qhov tseem ceeb tshwj xeeb hauv cov txheej txheem plating uas ua haujlwm tsis tu ncua rau lub sijhawm ntev. Kev ua haujlwm ntawm lub tshuab ua kom sov ua kom muaj kev ruaj ntseg hauv chav da dej thiab pab tswj cov txheej txheem zoo sib xws hauv cov khoom tsim khoom.
Tiv thaiv Plating Bath Contamination
Lwm qhov zoo dua ntawm titanium immersion heaters yog lawv lub peev xwm los tswj cov tshuaj purity nyob rau hauv lub plating da dej. Yog tias cov khoom siv cua sov corrodes thaum lub sijhawm ua haujlwm, cov hlau ions tso tawm los ntawm lub rhaub dej tuaj yeem nkag mus rau hauv cov tshuaj plating.
Cov kab mob no tuaj yeem cuam tshuam nrog cov tshuaj tiv thaiv electrochemical, hloov plating da dej muaj pes tsawg leeg, thiab txo cov txheej txheem zoo. Nyob rau hauv cov xwm txheej hnyav, kev sib kis yuav ua rau muaj qhov tsis xws luag xws li qhov chaw ntxhib, cov txheej txheem tsis sib xws, lossis kev ua tsis zoo ntawm cov khoom plated.
Titanium muaj zog corrosion kuj txo qhov tso tawm ntawm cov hlau ions mus rau hauv lub plating da dej. Vim tias cov hlau nto tseem tiv thaiv los ntawm nws cov oxide txheej, cov khoom me me yaj mus rau hauv cov tshuaj ib puag ncig.
Kev tuav cov tshuaj lom neeg ruaj khov nyob rau hauv lub plating da dej pab xyuas kom zoo electroplating kev ua tau zoo thiab txo qhov xav tau kev kho kom raug.
Hom Electroplating daim ntawv thov siv Titanium rhaub
Titanium immersion heaters yog dav siv nyob rau hauv ntau yam electroplating kev khiav hauj lwm qhov twg chloride - muaj cov kev daws teeb meem. Cov lus hauv qab no qhia txog ntau yam kev siv plating thiab yog vim li cas titanium heaters haum rau cov cheeb tsam no.
| Cov txheej txheem electroplating | Chemical Ib puag ncig | Qhov zoo ntawm Titanium rhaub |
|---|---|---|
| Nickel electroplating | Chloride- muaj cov tshuaj nickel | Siab tiv taus pitting corrosion |
| tooj liab electroplating | Acid chloride tooj liab da dej | Kev ua haujlwm ruaj khov thaum cua sov |
| Zinc plating systems | Chloride-raws li cov tshuaj electrolyte | Txo kev kis kab mob |
| Precious hlau plating | Sensitive plating chemistry | Khaws tshuaj purity |
| Industrial electroforming | Siab -tam sim no plating da dej | Lub zog corrosion kuj |
Cov piv txwv no qhia tau hais tias yuav ua li cas corrosion- cov khoom siv hluav taws xob tiv thaiv ua rau muaj kev ruaj khov thiab ua haujlwm zoo electroplating.
Engineering Factors txhawb lub rhaub kom ntev
Txawm hais tias titanium muab kev tiv thaiv corrosion zoo heev, kev tsim qauv tsim nyog tseem ceeb heev rau kev ua tiav lub neej ntev ntawm cov cua sov hauv plating tso tsheb hlau luam. Lub rhaub watt ntom ntom yuav tsum tau xaiv kom zoo kom tsis txhob muaj qhov kub thiab txias ntau dhau uas tuaj yeem cuam tshuam cov cua sov sheath.
Kev daws teeb meem txaus nyob rau hauv lub plating tank pab faib cov cua sov kom sib npaug thiab tiv thaiv kom tsis txhob muaj cua sov nyob ib puag ncig ntawm lub tshuab cua sov. Cov khoom siv hluav taws xob sib txawv ua kom ruaj khov da dej kub thiab txo cov thermal stress ntawm cov khoom siv cua sov.
Kev saib xyuas ntawm plating da dej chemistry kuj tseem ceeb heev. Kev tswj xyuas cov tshuaj sib npaug kom zoo yuav pab khaws cov txheej txheem oxide tiv thaiv ntawm titanium nto thiab tiv thaiv qhov kev xav tsis zoo ntawm corrosion.
Los ntawm kev sib koom ua ke corrosion-cov ntaub ntawv tiv taus nrog cov kev siv suab nrov, cov tshuab electroplating tuaj yeem tswj tau cov cua sov ua haujlwm tau zoo rau lub sijhawm ua haujlwm ntev.
Xaus: Txhim khu kev qha cua sov hauv Chloride-Ntiaj Teb Electroplating Systems
Cov tshuab electroplating uas muaj cov tshuaj chloride ions tam sim no nyuaj rau cov khoom siv cua sov vim tias cov tshuaj chloride ions tuaj yeem ua kom muaj zog corrosion hauv ntau cov hlau. Cov cua kub degradation tuaj yeem ua rau txo qis kev ua haujlwm thermal, kev sib kis ntawm plating da dej, thiab yuav tsum tau saib xyuas ntxiv.
Titanium immersion heaters muab cov tshuaj txhim khu kev qhavim lawv muaj zog tiv thaiv chloride -induced corrosion. Tsim kom muaj kev ruaj khov thiab tus kheej- kho titanium oxide txheej tiv thaiv cov hlau nto los ntawm cov tshuaj tua kab mob, tso cai rau cov cua sov kom ua haujlwm zoo hauv cov cheeb tsam ntawm cov electroplating.
Los ntawm kev tswj xyuas kev tiv thaiv corrosion, tshuaj purity, thiab ruaj khov thaum tshav kub kub kev ua tau zoo, titanium heaters txhawb kev ua haujlwm electroplating zoo ib yam thiab pab ua kom ntev -kev ntseeg siab hauv cov tshuab plating.
