Yuav ua li cas puas impurities yuav tsum tau them sai sai rau nyob rau hauv lub ci nickel plating tov ntawm hluav taws xob cua sov raj?

Yuav ua li cas puas impurities yuav tsum tau them sai sai rau nyob rau hauv lub ci nickel plating tov ntawm hluav taws xob cua sov raj?

13. Nyob rau hauv cyanide tooj liab plating, lub anode undergoes passivation, dissolution tsis zoo, thiab vim li cas cov ntsiab lus ntawm dawb cyanide nce?

Teb: Thaum lub sij hawm cyanide tooj liab plating, tsis zoo anodic dissolution. Txawm hais tias qee qhov cyanide ions tau oxidized thiab noj ntawm lub anode, ntau dawb cyanide ions raug tsim los ntawm cathode vim qhov tso tawm ntawm tooj liab cyanide complex ions, uas ua rau muaj kev nce hauv cov ntsiab lus ntawm dawb cyanide hauv cov tshuaj plating.

14. Cov khoom siv anode ntawm acidic ci tooj liab plating muaj txiaj ntsig zoo li cas ntawm cov txheej txheem?

Teb: Nyob rau hauv cov txheej txheem acidic ci tooj liab plating, yog siv electrolytic tooj liab anodes, nws yog ib qho yooj yim los tsim tooj liab hmoov, ua rau ntxhib txheej, thiab kev noj cov brighteners yog ceev. Yog li ntawd, tooj liab anodes uas muaj me me ntawm phosphorus (0.1-0.3 feem pua ​​) yuav tsum tau siv, uas tuaj yeem txo cov hmoov tooj liab. Txawm li cas los xij, yog siv tooj liab anodes nrog cov ntsiab lus phosphorus siab, lawv qhov kev ua tau zoo ntawm kev sib cais yuav deteriorate, uas ua rau txo qis ntawm cov ntsiab lus tooj liab hauv cov tshuaj plating.

15. Nyob rau hauv nickel plating tov, thaum lub anode cheeb tsam txo thiab cov anode tam sim no ceev ceev, puas pH tus nqi ntawm cov tshuaj nce los yog txo?

Teb: Tus nqi pH ntawm cov tshuaj txo qis. Qhov no yog vim lub anode txo, qhov ceev tam sim no nce, thiab cov anode undergoes passivation yam tsis muaj dissolution. Tom qab passivation, oxygen raug tso tawm, thiab H ntxiv rau hauv cov tshuaj nce ntxiv, uas ua rau nce acidity thiab txo pH.

Dab tsi yuav tsum tau ntxiv los txhawb anodic dissolution hauv nickel plating tov? Puas yog nws ua tau kom ntxiv ntau ntawm boric acid?

Teb: Txhawm rau txhawb kev tawg ntawm npib tsib xee anodes, qhov tsim nyog ntawm chloride ions yuav tsum tau ntxiv. Boric acid tsis txhawb anodic dissolution ntawm npib tsib xee.

17. Dab tsi ua phem impurities yuav tsum tau muab sau tseg rau cuam tshuam nrog ci nickel plating tov?

Teb: Kev ceev faj yuav tsum tau them rau ci npib tsib xee plating: (1) Cov khoom siv raw khoom tsis huv. Yog tias nickel sulfate muaj tooj liab, zinc, thiab nitrate, thiab anode nickel phaj muaj impurities xws li hlau; (2) Kev ua qias tuaj thaum lub sij hawm tsim khoom. Yog tias kev ntxuav tsis huv, cov tooj liab thiab chromium coj los ntawm cov khoom lossis cov khoom siv. Decomposition khoom ntawm organic additives. Cov no yog tag nrho cov teeb meem impurities nyob rau hauv ci nickel plating, uas yuav tsum tau ua tib zoo tshem tawm.

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