Kev ua tau zoo thiab kev siv ntawm titanium matrix anodes
Titanium thiab nws cov alloys muaj zoo heev corrosion kuj, zoo electrocatalytic zog, siab mechanical zog, ntev kev pab cuam lub neej thiab lwm yam zoo. Titanium anodes siv titanium raws li lub substrate yog dav siv nyob rau hauv kev lag luam electrolysis. Cia peb saib ntawm daim ntawv thov ntawm titanium-raws li anodes hauv ntau yam lag luam.
1. Chlor-alkali kev lag luam
Hauv kev lag luam chlor-alkali, raws li cov tshuaj tiv thaiv electrolysis txuas ntxiv nyob rau hauv cov ion membrane electrolyzer, vim qhov sib txawv thiab nyuaj ntawm cov anode chamber, cov electrolyzer tseem yuav tsim cov tshuaj lom thiab teeb meem Cl2, CI, CIO. Raws li qhov kub thiab txias (85C) nce, lub xub ntiag ntawm cov tshuaj no yuav ua rau lub corrosion ntawm titanium anode phaj. Cov pa roj-kua ncig hauv lub chamber anode tseem yuav ua rau cov electrode thiab titanium phaj loj heev. Thaum cov ion membrane tawg, cov tshuaj cathode (acidic, alkaline) yuav ntws mus rau hauv lub chamber anode, ua rau corrosion hnyav rau lub phaj titanium, thiab tom qab ntawd ua rau cov electrolyzer xau thiab perforate. Raws li lub morphology ntawm ion tank corrosion, nws yuav pom tau hais tias nws tsuas yog tshwm sim nyob rau hauv conductive txheej, roj-kua separators, titanium daim hlau thiab lwm qhov chaw. Yog li ntawd, yuav ua li cas los tsim ib tug heev corrosion-resistant ion membrane electrolyzer tau dhau los ua qhov tseem ceeb tshaj plaws.
Lub anode chamber ntawm lub tank ion feem ntau siv titanium daim hlau vim tias tus nqi ntawm titanium hlau hauv cov ntaub ntawv hlau yog qis dua li cov hlau nickel. Thaum txo cov nqi, nws tsim cov txiaj ntsig zoo ib yam. Ua kom muaj kev nyab xeeb thiab txhim khu kev qha thiab kev tiv thaiv ib puag ncig ntsuab yog tus yuam sij rau kev ua kom zoo thiab muaj nuj nqis hauv kev tsim khoom. Titanium hlau thiab nws cov alloys muaj zoo heev corrosion kuj, muaj zog passivation muaj peev xwm, yooj yim rau tsim ib tug ruaj khov passivation zaj duab xis, hinder electron hloov lwm lub tsev, thiab muab guarantees nyob rau hauv ncua kev pab cuam lub neej ntawm cov cuab yeej, tiv thaiv to, txhim kho efficiency efficiency, txuag hluav taws xob thiab ib puag ncig tiv thaiv.
2. Kev kho dej phwj tuaj
Los ntawm kev kawm txog kev kho dej phwj tuaj, nws tau pom tias cov txheej txheem lom neeg tsis yooj yim los kho cov dej khib nyiab. Cov teeb meem tseem ceeb yog lub sij hawm kho mob ntev, kev tshem tawm cov xim qis, thiab kev degradation nyuaj. Txoj kev electrochemical tau txais kev saib xyuas dav dav. Nws muaj qhov zoo hauv qab no:
1) Muaj ntau hom kev ua haujlwm, uas yog, kua thiab khib nyiab tuaj yeem kho tau los ntawm kev ncaj qha lossis tsis ncaj oxidation ntawm cov organic tebchaw, hlau txo thiab electrodeposition.
2) Cov txheej txheem kev kho mob yog yooj yim, thiab nws tuaj yeem ua tiav los ntawm kev nkag mus rau cov kev tswj xyuas tam sim no thiab qhov hluav taws xob.
3) Kev siv tau siab, tsis muaj cov tshuaj reagents yuav tsum tau ntxiv, thiab nws tuaj yeem ua tiav los ntawm kev sib pauv ion xwb.
Titanium-raws li muaj siab anodic corrosion stability thiab zoo heev lub cev thiab tshuaj. Hauv kev kho dej phwj tuaj, titanium hlau yog siv los ua cov matrix, uas yog, qhov ruaj khov titanium anode, uas tuaj yeem txhawb kev txo qis ntawm tag nrho cov phenolic tebchaw, TOC, absorbance thiab toxicity. Nyob rau tib lub sijhawm, nws muaj qhov zoo ntawm thaj chaw loj tshwj xeeb, muaj zog catalytic muaj peev xwm, tsis muaj kev poob qis, thiab muaj zog ruaj khov nyob rau hauv cov xwm txheej corrosion. Nws tau siv dav hauv kev kho dej phwj tuaj.
3. Kev lag luam metallurgical
Ib txwm siv lead ua hlau electrodes muaj ntau tshaj qhov muaj peev xwm. Oxide-coated cov ntaub ntawv (OCAs) tuaj yeem txo cov roj teeb hluav taws xob thiab txhim kho cov purity ntawm cov hlau lead cathodes, yog li lawv tau siv dav hauv electrodes hauv kev lag luam metallurgical. Txawm li cas los xij, vim yog corrosion thaum lub sij hawm electrolysis, cov khoom yog yooj yim kis los ntawm txhuas, thiab muaj cov chlorides siab yuav txwv tsis pub siv lead anodes. Nrog rau kev tso tawm ntawm kev txuag hluav taws xob, kev tiv thaiv ib puag ncig thiab cov lus qhia tsis sib xws hauv kuv lub teb chaws, cov hlau tseem ceeb xws li platinum, kub, palladium thiab txhuas alloy graphite electrodes raws li cov khoom siv hluav taws xob tau maj mam raug tshem tawm.
Raws li kev tshawb fawb pom, Ti, Si-C, Al, thiab Pb tuaj yeem siv los ua anodes. Ti, uas yog hu ua "aluminium ntawm lub xyoo pua 21st", muaj cov khoom zoo heev, xws li tsis tshua muaj ntom, corrosion kuj, thiab siab biocompatibility. Nws yog feem ntau siv anode (OCA, DSA) substrate. Titanium-based anodes muaj qhov zoo ntawm tus nqi qis, siab zog, tsis tshua muaj zog noj, ruaj khov thiab muaj txiaj ntsig electrolytic cov tshuaj tiv thaiv, thiab tau siv ntau dua hauv kev tsim khoom.
4. Electroplating kev lag luam
Yog vim li cas vim li cas titanium anodes hu ua dimensionally ruaj khov anodes (DSA) yog tias lawv muaj kev tiv thaiv corrosion zoo dua li cov hlau lead anodes thiab graphite electrodes, thiab tsis yooj yim rau cov tshuaj electrolytic thaum lub sij hawm electrolysis hloov lawv qhov loj thiab cov duab. Cov anode no tuaj yeem ua tau raws li cov kev xav tau ntawm cov khoom siv hluav taws xob sib txawv, xws li: electroplating rho tawm ntawm cov hlau zinc, cobalt, npib tsib xee, tooj liab, acid tooj liab plating los tsim cov ntawv ci tooj liab, cov ntawv luam tawm Circuit Board (PCBs), sib npaug anodes, trivalent electroplating ntawm chromium, lwm.
Hauv kev lag luam electroplating, titanium anodes feem ntau muaj ob ntu: titanium hlau substrate thiab active oxidation txheej. Feem ntau hais lus, lub hauv paus hlau yuav tsum muaj ib lub peev xwm nqa tau tam sim no, xws li titanium (Ti), tantalum (Ta), zirconium (Zr), niobium (Nb), thiab lwm yam. Peb lub tom kawg yog kim, complex rau txheej txheem thiab tsis muaj. siv tus nqi. Yog li ntawd, Ti sawv tawm nrog nws cov txheej txheem tsim khoom yooj yim, zoo corrosion kuj, siab mechanical zog thiab tsis tshua muaj peev xwm, dhau los ua cov electrode hlau matrix feem ntau siv. Titanium anode kuj yog ib qho chaw txuag thiab ntsuab-phooj ywg cov khoom uas ua tau raws li cov cai ntawm lub teb chaws tam sim no cov cai.
Hauv cov ntsiab lus, titanium anode yog dav siv nyob rau hauv cov kev lag luam saum toj no, thiab cov khoom siv tiag tiag thiab daim ntawv thov yog nyob rau hauv txoj haujlwm tseem ceeb hauv kev lag luam tam sim no. Titanium anode muaj kev tiv thaiv corrosion zoo heev, zoo electrocatalytic kev ua haujlwm, kev ua haujlwm siab, tuaj yeem hloov mus rau ntau yam kev ua haujlwm nyuaj thiab hloov chaw ua haujlwm, tus nqi qis, kev txuag nyiaj, kev pabcuam lub neej ntev txog 5-10 xyoo thiab tsis muaj kuab paug rau ib puag ncig.
