Nyob rau hauv xyoo tsis ntev los no, nrog kev txhim kho ntawm kev lag luam hauv tebchaws thiab cov txheej txheem txhuas ntau, tab sis ntau yam kev siv ntau dua, uas yog ntau yam, tab sis zoo nkauj ntawm Aluminium Profiles. Txhawm rau txhawm rau txhim kho qhov zoo ntawm txhuas profiles thiab ua tiav lub hom phiaj ntawm kev coj ua hauv- qhov tob thiab cov ncauj lus kom ntxaws ntawm kev pom qhov tsis xws luag. Hauv daim ntawv no, speckle corrosion nyob rau saum npoo ntawm 6063 aluminium profile tom qab cov khoom tshawb fawb, thiab cov chaw tseem ceeb ntawm cov chaw corrosion tau sib tham.
1 tsom xam ntawm qhov chaw ntawm qhov chaw corrosion
Los ntawm kev sib sau ntawm 6063 cov profile txhuas, nws tuaj yeem pom tau tias lub mg algterement tag nrho cov peev xwm ntawm Sias yog artificialially dhau los thaum npaj lub alloy muaj pes tsawg leeg. Vim tias nrog kev nce cov ntsiab lus si, cov nplej ntawm cov alloy ua tiav, thiab kev kho cua sov ua tau zoo dua. Tab sis ntawm qhov tod tes, qhov tshaj ntawm Si kuj muaj cov nyhuv tsis zoo, uas txo cov plasticity ntawm cov alloy thiab tsis txaus ntseeg. Cov txiaj ntsig qhia tau tias SITE ntau heev tsis tuaj yeem sau cov SI theem pub dawb, tab sis kuj muaj cov roj av (Al3DE3Si2) thiab Anyboard Any Mg2Si hais nyob rau hauv txhuas alloy. Cov theem thiab muaj cov cawv muaj txiaj ntsig ntawm cov khoom corrosion ntawm cov alloy, tshwj xeeb yog theem tuaj yeem txo qis cov khoom corrosion ntawm cov alloy. Cov muaj pes tsawg leeg ntawm cov seem ntawm qhov chaw tau yog pub dawb Siase thiab Alfesi theem, thiab nws tau pom tias yog cov khoom seem, qhia tau tias yog cov txheej txheem xeb ntawm cov txheej txheem corrosion. Cov ntaub ntawv zinc nyob rau hauv cheeb tsam corrosion yog qhov siab dua li ntawm qhov ntawm lub tshuab tswj tsis muaj zog zinc hauv alloy kuj tseem koom nrog hauv cov txheej txheem corrosion.
Nyob rau hauv cov txheej txheem anodizing, Anode theem mg2Si yog qhov chaw ntawm pitting corrosion ntawm cov alloy. Thaum anodizing alkali ntxuav, mg2si hais kom yaj los ua cov pits, thiab thaum cov magnesium yog yaj ntawm cov nplej, cov xim ntawm cov nplej yuav tsaus muag. Cov silicon tsis yooj yim tshem tawm hauv sulfuric acid neutralization cov txheej txheem, yog li cov ntsiab lus siliconization nyob hauv qab ntawm qhov chaw thaj tsam yog siab tshaj qhov ntawd hauv lwm qhov chaw.
2 Tsom xam ntawm cov ua rau ntawm qhov chaw corrosion
Cov ntsiab lus tseem ceeb cuam tshuam nrog kev ntsuas corrosion suav nrog alkali ntxuav lub sijhawm, ZN, FE thiab lub xeev alloy ntawm alloy thaum lub sijhawm pretreatment txheej txheem. Ntawm ntau yam, lub xeev extrusion plays lub luag haujlwm tseem ceeb, muaj feem cuam tshuam txog kev faib tawm ntawm Corrosion, nrog rau cov khoom siv nag lossis daus zoo li cov hlau interbond tebchaw. Nyob rau hauv coarser extrusion fringe cheeb tsam, kev faib tawm ntawm cov hlau ua kom pom tseeb, thiab kev ntxhov siab hauv lub zog ruaj khov, nyob rau lub xeev ruaj khov thiab muaj cov nplej ntawm no tsis yog Loj hlob tsis meej, tab sis kuj cathoD theem xws li mg2si anodic theem, feody, feal3 thiab lwm cov ntsiab lus cathoes yog precipitated, uas tsim cov xwm txheej rau kev ua kom huv si corrosion.
Vim yog cov laj thawj saum toj no, muaj ib thaj tsam tsis zoo ntawm cov kab sib xyaw ua ke, thiab lwm yam ntawm cov kab ke sib xyaw Raws li dawb si, feal3) nyob rau hauv lub microbattery yog qhov uas nyiam tshaj lij, thiab mg2si kuj tseem yaj. Raws li ib tug tshwm sim, kev sib cais ntawm ib ncig ntawm theem Anode cov ntawv ua rau cov kab xeb uas muaj cov khoom seem, thiab cov kev sib cais ntawm cov txheej txheem anode ib qho kev xeb lub qhov tsis muaj chaw nyob. Thaum lub corrosion cov xwm txheej txuas ntxiv mus zog (xws li kub siab, thiab lwm yam ntawm lub corrosion thiab lwm yam ntawm lub corrosion thiab lwm yam ntawm cov chaw uas muaj qhov tsis txaus ntseeg tau piav qhia saum toj no.
3. Kev tshuaj ntsuam ntawm tus tsim tshuab ntawm qhov chaw corrosion
063 yog ib qho al -} mg - si alloy, thiab mg2si tsuas yog lub hnub nyoog {}} muaj zog ntxiv. Txhawm rau txhim kho lub zog ntawm cov alloy, cov ntsiab lus ntawm Si Ntsiab tau yog feem ntau ntau dhau, thiab dawb si thiab fesial theem ua tiav yog tsim los ntawm qhov tshaj plaws si. Cov lus no tsis yog nyob rau hauv cov ntaub ntawv ntawm cov txheej txheem tsis zoo thiab tsis {{7} Txheem kev kho cua sov. Nws yuav ua rau cais (lossis cais cov kab ke) ntawm cov ciaj ciam ntawm Feal3 thiab MG2Si hais, uas yog qhov chaw pitting yaig. Raws li qhov kev xav ntawm corrosion, lub anode aluminium nyob ib ncig ntawm corrale, thiab cov neeg muaj diffe, uas yuav tsim dawb me ntsis rau saum npoo ntawm txhuas tom qab ziab. Qhov no yog lub npe hu ua qhov chaw muaj corrosion. Cov kab zauv sib piv tau raws li nram no:
Al → ib 3 3 e (anode)
Al 3 3 Oh- → →} {}}} {- {{{} {↓ (cather)
4. Qhov tshwm sim ntawm cov ntsiab nquag
4.1 Kev nrawm nrawm ntawm lub ZN me
Lub Zinc Storly yaj nyob rau hauv aluminium alloy accelerated fesygen ua tau zoo li cov pa roj carbon monoxe, thiab txhawb nqa cov pa roj av zoo li cov pa roj av, thiab txhawb nqa cov pa luam yeeb zoo thiab txhawb nqa kev nthuav dav thiab tob zuj zus ntawm corrosion.
Zn keeb yog yaj nyob rau hauv cov lus lye hauv daim ntawv ntawm zn (Oh) 42- thiab zn (Oh) -3 nrog kev sib cais ntawm alkali ntxuav. Thiab vim tias lub peev xwm ntawm ZN (-0.76V) yog qhov zoo tshaj li ntawm Al (-1.67v), thaum cov tsis muaj nuj nqis tso rau hauv qhov chaw seem, yog li cov tsis txaus ntseeg ntawm siab ZN lub ntsiab yuav tshwm sim. Ntawm qhov tod tes, vim muaj cov peev xwm loj ntawm zn thiab al, cov corrosion nyob rau hauv lub microbationy nyob rau hauv lub microbatter yog qhov kawg, thiab cov corrosion sai sai, thiab thaum kawg corrosion, thiab thaum kawg corrosion, thiab thaum kawg corrosion, thiab thaum kawg corrosion, thiab thaum kawg corrosion, thiab thaum kawg cov corrosion sai, thiab thaum kawg corrosion sai, thiab thaum kawg corrosion, thiab thaum kawg corrosion sai, thiab thaum kawg corrosion sai, thiab thaum kawg corrosion sai, thiab thaum kawg corrosion, thiab thaum kawg kev ua kom huv si.
Raws li ib qho sab nraud ntawm qhov chaw sab nraud, cl - yog rhiab heev rau cov chaw ua rau kev ua yeeb yam thiab kev ua phem rau kev xeb thiab kev ua phem. Cov txiaj ntsig tau pom tias cl- hauv cov accorded cov kua ntses thiab adsorbed ntawm matrix los ntawm kev ua yeeb yaj kiab passivation. Lub aluminium ntawm no yog sai sai uas yog ua kom muaj kev ua kom muaj zog, nyob rau hauv lub cev roj teeb hluav taws xob, nyob rau hauv lub nroog roj teeb tau loj dua, yog li cov acidity ntawm kev daws teeb meem yog ntxiv ntxiv dag zog, thiab cov mob corrosion yog watsened. Thaum lub cl -}} kev twv txiaj ntsig rau sab xis, ua rau muaj cov txiaj ntsig zoo tshaj plaws hauv kev ua kom zoo nkauj tshwm sim. Tus lej pH hauv lub cev ntxhua khaub ncaws ua si lub luag haujlwm hauv kev hloov pauv ntawm cov nplej los ntawm grey mus rau xim dub thaum xim tsaus ntuj. Thaum lub pH yog> hauv dej ntxhua khaub ncaws, cov zaj duab xis ua tiav thiab ntom, thiab kev rhuav tshem thiab tsis muaj zog heev, yog li muaj xeb ntawm cov profile; Thaum Phe yog<2, the surface of the aluminum profile is in an active dissolved state, and there is no passivation film formation, so there will be no spot corrosion.
5. Xaus
Lub speckle corrosion ntawm 6063 cov profile txhuas tshwm sim los ntawm kev sib cais thiab cov tsis huv ntawm cov kab mob ua kom nrawm nrawm Qhov sib piv ntawm cov magnesium thiab silicon hauv cov alloy yuav tsum tau tsim nyog kho tus kab mob siricon, yog li kom tsis txhob cuam tshuam rau kev ua haujlwm corrosion ntawm aluminium profiles. Tswj cov kab trace ZN hauv cov alloy thiab cl -}}}}}}}}}}}}}}} kev kho mob los txo qhov kev tsis zoo ntawm lub caij.
