Kev cuam tshuam ntawm cov txheej txheem txheej txheem ntawm qhov zoo ntawm txheej

1. Qhov cuam tshuam ntawm kev ceev tam sim no ntawm Plating
Lub cathode tam sim no ntom muaj qhov cuam tshuam loj rau lub thickness ntawm crystalline nplej hauv txheej.
(1) Thaum cov cathodic tam sim no ceev tsawg dhau thiab cov nyhuv cathodic polarization me me, crystalline nplej ntawm txheej yog coarser.
(2) Raws li tam sim no qhov ceev ntawm cathode nce, cov nyhuv polarization ntawm cathode kuj nce, thiab crystallization ntawm txheej yuav zoo dua thiab ze dua.
(3) Qhov ceev tam sim no ntawm lub cathode tsis tuaj yeem siab dhau thiab tsis tuaj yeem tshaj qhov tso cai rau tus nqi qis. Tom qab tshaj li qhov tso cai rau tus nqi qis tshaj, cov txheej txheem hlau nrog cov duab zoo li cov ceg ntoo yuav raug tsim tawm ntawm lub ntsis thiab protrusion ntawm cathode vim yog tsis muaj hlau ions nyob ze ntawm lub cathode, los yog xoob txheej nrog cov duab zoo li ib tug daim txhuam cev yuav raug tsim tawm ntawm tag nrho cov cathode nto.
(4) Cov nyhuv ntawm qhov tam sim no ceev ntawm qhov kev ua tau zoo ntawm cov txheej txheem tsis yog ncaj qha, tab sis feem ntau tsis ncaj (xws li los ntawm kev hloov pauv hauv electrode muaj peev xwm), cuam tshuam ncaj qha rau tus nqi deposition.
2. Cov nyhuv ntawm qhov kub thiab txias ntawm plating
Raws li tib yam li lwm yam kev mob, qhov kub ntawm cov tshuaj plating yuav ua rau kom cov tshuaj tiv thaiv cathodic thiab diffusion tus nqi ntawm cov hlau ions, txo cov nyhuv cathodic polarization, thiab yog li kuj ua rau cov crystallization ntawm txheej los ua thicker. Cov laj thawj yog raws li nram no:
(1) Qhov no ua rau kom cov ion diffusion tus nqi tshwm sim los ntawm thermal motion thiab txo concentration polarization.
(2) Tshem tawm cov hlau ions muaj lub zog ua kom ntau dua, txo cov electrochemical polarization.
(3) Cov nyhuv ua ke ntawm ob yuav txo cov cathodic polarization thaum lub sij hawm electrodeposition. Tsis tas li ntawd, nce qhov kub thiab txias tuaj yeem ua rau cov khoom siv hluav taws xob ua kom zoo dua qub, txhawb nqa anodic dissolution, txhim kho cathodic tam sim no efficiency, txo cov pinholes, thiab txo cov kev ntxhov siab hauv cov txheej.
3. Cov nyhuv ntawm nplawm rau ntawm txheej
Stirring tuaj yeem nce qhov ceev tam sim no thiab muaj txiaj ntsig zoo rau kev sib tw.
(1) stirring tshem tawm ib co concentration polarization, thiab thaum muaj ib tug leveling tus neeg sawv cev tam sim no, stirring accelerates lub diffusion ceev ntawm leveling tus neeg saib xyuas, yog li ntxiv dag zog rau nws cov hauj lwm.
(2) Stirring yuav ceev lub convection ntawm cov tshuaj electroplating, raws sij hawm ntxiv cov hlau ions noj nyob ze cathode, thiab txo cov concentration polarization nyhuv ntawm cathode, uas ua rau coarsening ntawm txheej crystallization.
(3) Tom qab siv nplawm, qhov tso cai cathodic tam sim no ceev tuaj yeem nce ntxiv, kov yeej qhov tshwm sim ntawm crystal coarsening tshwm sim los ntawm kev txo cov cathodic polarization tshwm sim los ntawm kev nplawm, thiab tau txais cov txheej txheem nruj thiab cov ncauj lus kom ntxaws ntawm ntau dua tam sim no ceev thiab tam sim no efficiency.