1. Dab tsi yog cov hauv paus ntsiab lus hauv qab txhuas cov pas nrig corrosion thiab li cas kev kho ntshav tiv thaiv nws?
Teb:
Aluminium pas corrosion tshwm sim los ntawm cov khoom siv hluav taws xob uas cov hlau oxidizes thaum raug cov dej noo, ntsev, lossis acidic \/ alkaline ib puag ncig. Cov kev kho mob saum npoo los ntawm peb lub Koom Haum Me: Barrier tiv thaiv cov khoom siv ntawm corrosive), thiab kev tiv thaiv oxide ruaj khov (siv ntau reactive vagals). Anodizing ua piv txwv passivation los ntawm electrochemically loj hlob ntawm cov roj oxide aluminium Txhim kho txheej ci zoo li Chromating Daim Ntawv Complox chromium-olide matrices uas yog tus qauv me me. Organic txheej xim zoo li epoxy cov xim pleev xim muab cov nyom tiv thaiv los ntawm cov txheej txheem polymer frombers {}} μm tuab. Cov hau kev siab tshaj plaws zoo li ntshav electrolytic oxidation (Peo) tsim cov kab ke ceramic-conforing corrosion inhibitors. Cov kev kho mob no yuav tsum hais cov nyom sib tw - nws cov kev sib tw amphoteric ua rau ob qho txaus ntshai, thaum Galvanic Corrosion pheej hmoo nce thaum txuas nrog ntau cov hlau. Niaj hnub nimno nto engineering sib xyaw ntau txoj hauv kev; Piv txwv li, anodized cov pas nrig feem ntau tau txais cov kev siv tshuab hluav taws xob nrog ptfe lossis cov kab sib txuas ua kom sib txuas rau cov cim hluav taws xob. Kev ntsuam xyuas nrawm nrawm ua kom pom zoo kho cov pas nrig sib tsoo nrog cov tshuaj ntsuab (}}}} Kev xaiv yog nyob ntawm ib puag ncig ib puag ncig - marine daim ntawv thov yuav siv cov tawv nqaij fluoropolymer tsuas yog xav tau phosphoric acid hloov dua siab tshiab.
2. Yuav ua li cas tus txheej txheem anodizing tsim kev ua kom zoo dua corrosion tsis kam nyob hauv Aluminium Rods?
Teb:
Anodizing hloov pauv cov pas nrig los ntawm kev tswj cov txheej txheem hluav taws xob roj oxidation uas tsim cov roj av ntom, cov txheej txheem ua kom xeb nrog kev tshwj xeeb corrosion. Cov txheej txheem raus rau rods hauv sulfuric acid (feem ntau {{} {}}}}}}}}}}}}}}} Qhov no hlob cov qauv oxide 10-25 μm tuab - txog 100 zaus thicker dua li cov oxidation. Lub Contacar pore qauv ({10-150 hydrating hauv cov oxide hauv boehmite (alooh), o o o o o o o o o oxide (alooh), o o o o o o o oxide (alooh), o o oxs mus kaw cov pores. This sealed layer exhibits remarkable stability, with corrosion current densities below 0.1 μA\/cm² compared to 1-10 μA\/cm² for untreated aluminum. Hard anodizing (ntaus III) ntawm 0 tus degree ua tau txawm tias tuab tuab ({} μm) nrog microhardness ncav 500hv. Cov txheej txheem tsis tseem ceeb cuam tshuam kev ua haujlwm: electricty kub variations ntawm 15%, thaum kev hloov pauv porcosity muaj kev cuam tshuam txheej sib txawv. Tsis ntev los no kev hloov pauv suav nrog Tartaric-Sulfuric Acid Anodizing (TSA) rau Aerospace cov ntawv thov, ua thinner tab sis ntau cov kev tiv thaiv ib puag ncig. Kev Tshawb Fawb Zoo Tshaj Plaws Pauv-nrawm aceticid ntsev txau (Cass) Cov khoom kho kuj tseem muab cov txheej txheem zoo tshaj plaws rau cov xim av lossis cov nplaum uas tau muab khi kom zoo, tsim kev tiv thaiv ntau txheej.
3. Dab tsi yog qhov piv tau zoo ntawm cov tshuaj siv hloov cov tshuaj sib xyaw tiv thaiv cov tshuaj tiv thaiv hluav taws xob piv rau hluav taws xob?
Teb:
Kev siv tshuaj lom neeg hloov dua tshiab txheej txheem thiab cov kev kho hluav taws xob muab cov txiaj ntsig zoo rau txhuas cov pas tshuaj tiv thaiv raws li cov cai thov. Cov qauv siv hluav taws xob hloov dua siab tshiab (alodine 12 {{1} {{{{{{{{{{{{{{{{{{{{{{{{}. Muab "kho tus kheej" thaum puas. Cov kev kho no yog tus nqi-ua tau zoo ({0. 10-0.10-0.50 rau ib qho kev coj ua hluav taws xob - ua rau lawv zoo tshaj plaws rau hluav taws xob txuas hluav taws xob. Txawm li cas los xij, kev txhawj xeeb ib puag ncig yog phasing tawm hoxavalent chromium-pub supromium passivation (TCP) lossis zirconium-titanium raws li kev kho. Hauv kev sib piv, cov hau kev electrymemical zoo li anodizing tsim thicker, ntau ruaj khov, tab sis xav tau cov khoom siv hluav taws xob nyuaj thiab ntsuas kub. Cov khoom siv cov khoom siv yog {15}}}} lub sijhawm ntau dua li cov kab kev kho tshuaj lom neeg, ua kom ncaj qha rau cov ntawv thov siab. Kev sib piv sib piv ua yeeb yam Anodized Rods kawg {17} х-coated rods zoo dua wall zoo dua tsis muaj kev tawg. Hybrid txoj kev mus tau txais traction - pas nrig tau txais phaj zirconium hloov ua ntej cov nplaum txhawb nqa nrog cov txheej txheem organic 'kev tiv thaiv. Kev hloov kho cov khoom siv Nanotechnology zoo li cov lus cog tseg yooj yim cog lus rau cov kev ua tau zoo no nrog cov kev kho mob monolayer muab tshuaj ntsuab {21}} teev ntsev txau tiv thaiv.
4. Yuav ua li cas niaj hnub niaj hnub organic txheej txheem txhim kho txheej txheem txhim kho txhuas cov pas nrig tiv thaiv kab xeb?
Teb:
Kawm cov tshuab Orgicic txheej rau txhuas Rods Adnate Science-Science kom ua tiav kev tiv thaiv corrosion los ntawm ntau txheej txheem archities. Ib qho kev ua haujlwm zoo pib pib nrog {2}} μm ntawm epoxy Promer muaj cov neeg quav phem lossis tshiaber cerium-based inhibitors uas nquag ua rau suppress Corrosion. Cov txheej nruab nrab yog {{4 4}} μm ntawm polyurethane nrog ceramerous diffusion pathents corrosive dolt. Lub topcoat feem ntau siv fluoropolymers zoo li PVDF ({5}} μm) muab UV ruaj khov thiab tshuaj lom neeg kuj. Cov kab ke no ua haujlwm Synergistically - qhov primer coffically biide txheej, nruab nrab-txheej nqus neeg cov dej thiab cov paug. Niaj hnub nimno tsim incorporate inforporate inforitive addions: ua cov tshuaj sib ntxiv zoo li polyaniline tswj kev tiv thaiv; PH-ROJ MEEM MEDICAPSules tso cov neeg tsis txaus ntseeg thaum corrosion pib; Hydrophobic nanoparticles tsim cov nuj nqis-cuam tshuam cov chaw nrog 15 0 degree + kev sib cuag. Cov kev qhia thov tau muaj kev sib haum xeeb zoo tshaj plaws - chaw sib txuam ntawm cov chaw muaj kev sib raug zoo nyob rau hauv cov feeb tiv thaiv hnub rau cov xim ua yees. Kuaj cov kab ke no tuaj yeem tiv thaiv cov pas nrig txhuas rau {14}}}}}} qhov muag kom zoo rau cov chaw (SA 2.5 kev nyiam huv 2.5 Kev tsim kho tshiab kawg yog graphy txhawb cov Epoxy Txheej Txheem, qhov twg tsuas yog 0.5% graphe loading txo cov teeb meem thiab kev sib cais galvanic. Txawm li cas los xij, cov tshuab txawj ntse no yuav tsum tswj cov txheej txheem nruj - kev npaj ua tsis zoo lossis kev kho kom txo tau zoo los ntawm 90%.
5. Dab tsi tawm cov thev naus laus zis tuaj yeem hloov kho cov txhuas cov nqaj tiv thaiv?
Teb:
Ob peb txiav cov txheej txheem saum npoo av yog ua kom zoo rau cov kev tiv thaiv kev txwv tsis pub los ntawm kev hais txog kev txwv tsis pub muaj cov kev txwv. Plasma electrolytic oxidation (Peo), tseem hu ua microarc oxidation, tsim kom tuab ntawm cov kab hluav taws xob ncaj qha rau hauv cov tshuaj electrolytes ncaj qha. Cov txheej txheej no sib xyaw ua ke, lossis yirconium sib xyaw ua kom ua tiav cov ntsev txau ua kom tau ntau dua 5000 teev {{} lub sij hawm pa anodization. Atomic txheej Ex qhauj tawm (ALD) siv cov yeeb yaj kiab rov qab, cov yeeb yaj kiab tiv thaiv kev tiv thaiv tsuas yog {žts} atts bow los ntawm cov roj-theem-theem cov kev tawm tsam. Cov nanometer-nplai alumina lossis titania cov txheej txheem ua tiav txoj kev pab them nyiaj dawb ntawm cov qib molecular, ua kom muaj kev tiv thaiv tsis muaj kev hloov pauv. Kev kho tus kheej kho tus kheej sawv cev rau lwm qhov kev sib tsoo - microvascharots lossis nanocapsules uas muaj corrosion inhibitors zoo li Benzotriazole kho puas tsuaj. Bio-Inppired Mus Los Ua Lus Mimic Xwm-Nquag-Tas Polydropamine Caigning Tsim cov xim zoo nkauj uas pom cov coating degradation. Tej zaum cov kev sawv daws tshwj xeeb tshaj yog cov khoom siv hlau-organic (mof) txheej uas sib txuas nrog hluav taws xob molecular nrog electrochemical passivation. Tam sim no cov thev naus laus zis siv tau vim yog cov nqi siab (ald rau anodizing), tab sis sim cov ntawv thov hauv aerospace thiab marine engineering qhia lawv lub peev xwm. Raws li ntau lawm nplai, cov kev daws teeb meem no yuav recebine corrosion cov qauv tiv thaiv thiab nthuav kev kho kev kho lub neej lub neej dhau 50 xyoo nyob rau ib puag ncig hnyav.
