Nkag siab Corrosion ntawm Anode: Lub luag haujlwm ntawm Titanium Anodes (3)
Tau qhov twg los: https://www.ehisenanode.com/info/understanding-corrosion-at-the-anode-the-role-100671559.html
(Txuas ntxiv)
Electrochemical Basis ntawm Corrosion
Corrosion yog qhov tseem ceeb ntawm cov tshuaj tiv thaiv electrochemical uas cuam tshuam nrog kev hloov ntawm electrons. Nyob rau hauv ib tug raug electrochemical cell, ob electrodes - lub anode thiab lub cathode - cuam tshuam nrog ib tug electrolyte. Nyob rau ntawm lub anode, oxidation tshwm sim, ua rau poob ntawm electrons, thaum nyob rau hauv lub cathode, txo qis tshwm sim, nrog rau qhov nce ntawm electrons.
Lub luag haujlwm ntawm Electrodes hauv Corrosion
Lub anode plays lub luag haujlwm tseem ceeb hauv txhua txheej txheem electrochemical. Nws yog lub electrode qhov twg oxidation tshwm sim, uas ua rau lub dissolution ntawm hlau ions mus rau hauv lub electrolyte. Kev nkag siab txog lub luag haujlwm ntawm electrodes yog qhov tseem ceeb rau kev nkag siab yuav ua li cas thiab vim li cas corrosion manifests ntawm lub anode.
Txheej txheem cej luam ntawm Anodes thiab Cathodes
Anode: Cov electrode uas oxidation tshwm sim. Hlau atoms poob electrons thiab ua zoo them ions, ua rau cov khoom degradation.
Cathode: Lub electrode qhov twg yuav txo tau. Electrons los ntawm sab nraud Circuit Court raug txais, feem ntau ua rau cov hlau deposition los yog hloov ntawm ions mus rau nruab nrab atoms.
Electrochemical Reactions ntawm Anode
Ntawm qhov anode, hlau atoms yog oxidized, uas tuaj yeem piav qhia los ntawm cov tshuaj tiv thaiv hauv qab no:
Qhov kev sib npaug no qhia txog tias cov hlau (M) atom poob electrons (e⁻) li cas los tsim cov hlau ion zoo (M{n+}). Qhov poob ntawm electrons yog lub hauv paus mechanism tom qab corrosion ntawm lub anode.
Mechanisms ntawm Corrosion ntawm lub Anode
Nkag siab txog cov txheej txheem ntawm corrosion ntawm lub anode yuav soj ntsuam cov yam ntxwv uas cuam tshuam oxidation cov tshuaj tiv thaiv thiab yuav ua li cas cov tshuaj no ua rau cov khoom degradation.
Oxidation Reactions piav qhia
Thaum lub sij hawm electrochemical txheej txheem, oxidation cov tshuaj tiv thaiv ntawm lub anode tshwm sim nyob rau hauv kev hloov ntawm cov khoom hlau rau hauv ions. Cov tshuaj tiv thaiv no feem ntau cuam tshuam los ntawm ntau qhov sib txawv, suav nrog.
Hom Electrode Khoom: Cov ntaub ntawv sib txawv muaj qhov sib txawv ntawm qhov cuam tshuam rau oxidation.
Electrolyte Composition: Lub xub ntiag ntawm cov ions tshwj xeeb tuaj yeem ua kom nrawm lossis inhibit corrosion.
(Yuav tsum tau txuas ntxiv)
