Habka formation of lakabka galvanized maquufin kulul u dhexeeya matrix birta iyo ka baxsan lakabka zinc saafi ah, formation of habka daawaha birta-zinc, dusha workpiece ee dahaadhay maquufin kulul marka formation of daaha daawaha birta-zinc, si lakabka zinc ee birta iyo saafiga ah ayaa si fiican isku dhafan.Geedi socodka ee silig galvanized duudduuban weyn si fudud loo sifayn karaa sida: marka workpiece birta la geliyo dareeraha zinc la dhalaaliyay, zinc ugu horeysay iyo α-birta (jidhka-xarun) dhalaalid adag la sameeyay on interface ah.Kani waa kareem uu sameeyay birta matrixka ah ee lagu milmay atamka zinc ee xaalada adag.Labada atomi ee birta ah ayaa isku dhafan, soo jiidashada u dhaxaysa atamka waa mid yar.
Sidaa darteed, marka Zincku gaadho dheregsanaanta dhalaalka adag, labada walxood ee Zinc iyo atomiyada birta ayaa isku fidsan, atamyada zinc-ka ayaa ku dhex faafaya (ama gudaha u galay) matrixka birta ah waxay u guuraan shabagga shaxanka oo si tartiib tartiib ah u sameeyaan alloy. Birta leh, halka ay birta ku firdhisan tahay dareeraha zinc-ka dhalaaliyay ee ka samaysan isku-dhafka FeZn13 oo leh zinc oo hoos ugu daadaya xagga hoose ee dheriga galvanized kulul, taas oo ah, zinc slag.Marka shaqada laga saaro xalka zinc leaching, dusha sare ee lakabka zinc saafiga ah ayaa la sameeyay, kaas oo ah crystals hexagonal, iyo maadada birta ee aan ka badnayn 0.003%.
Galvanizing Qulqulka Kulul, oo sidoo kale loo yaqaan galvanizing-kuleelka kulul, waa habka lagu helo lakabka daboolka birta iyadoo la dhex gelinayo xubin birta ah xal zinc la dhalaalay.Iyadoo horumarinta degdega ah ee gudbinta korantada sare, gaadiidka iyo isgaadhsiinta, shuruudaha ilaalinta ee qaybaha birta waxay noqonayaan mid sare oo sarreeya, iyo baahida loo qabo galvanizing kulul ayaa sidoo kale sii kordhaya.Caadi ahaan dhumucda lakabka elektiroonigga ah waa 5 ~ 15μm, iyo lakabka weyn ee duubka galvanized ee siliga guud ahaan waa in ka badan 35μm, ama xitaa ilaa 200μm.Qulqulka kulul ee galvanized awoodda daahan waa wanaagsan yahay, daahan cufan, aan ka mid ah organic.
Sida aynu wada ognahay, habka iska caabinta daxalka atmospheric ee zinc waxaa ka mid ah ilaalinta farsamada iyo ilaalinta korantada.Marka la eego xaaladda daxalka atmospheric, waxaa jira ZnO, Zn (OH) 2 iyo filimka ilaalinta aasaasiga ah ee zinc carbonate ee dusha sare ee lakabka zinc, kaas oo ilaa xad hoos u dhigaya daxalka zinc.Marka filimkan difaaca (sidoo kale loo yaqaan miridhku cad) uu dhaawacmo, filim cusub ayaa la samayn doonaa.
Marka lakabka zinc uu si xun u waxyeeloobo oo uu khatar galiyo matrixka birta, zinc wuxuu soo saari doonaa ilaalinta korantada ee shaxanka, awoodda caadiga ah ee zinc waa -0.76V iyo awoodda caadiga ah ee birta waa -0.44V.Marka zinc iyo birta ay sameeyaan batariyada yaryar, zinc wuxuu ku milmi doonaa sida anode, iyo birta waxaa loo ilaalin doonaa sida cathode.Sida iska cad, iska caabinta daxalka atmospheric galvanizing-kuleelka kulul ayaa ka fiican kan galvanizing koronto.
Waqtiga boostada: 20-04-23