Daxalka godka waxaa sidoo kale loo yaqaan daxalka godka yar, godka ama godka.
Waa nooc ka mid ah dhaawaca daxalka kaas oo inta badan dusha sare eebiraha sameeyoma daxalaystaan ama ma daxalaystaan si aad u yar, laakiin godadka daxalka ayaa ka muuqda meelaha maxalliga ah oo sii qoto dheer.Godadyada qaarkood waxay ku jiraan go'doon, halka kuwa kalena ay si kooban isugu xidhan yihiin oo ay u eg yihiin meel qallafsan.Godadka Etch waxay noqon karaan kuwo weyn ama yar, laakiin guud ahaan ka yar, sida ku cad shaxanka soo socda godad godad kala duwan oo iskutallaabta, marka la eego cabbirka, qoto dheer ee godka etch guud ahaan waa la siman yahay ama ka weyn yahay dhexroorka daloolka etch.Daloolintu waa mid ka mid ah qaababka daxalka ugu waxyeelada badan ee birta-duplex-ka ah.Godad godadka inta badan waa goobta laga bilaabo dildilaaca daxalka iyo dildilaaca daxalka.
Bir daxal laheynfilm passivation dusha ay sabab u tahay jiritaanka cilladaha birta ahama, inclusions iyo solutes, sida inhomogeneity, si filimka passivation waa ka sii jilicsan meelahan, in xal daxal gaar ah si fudud loo burburiyo, burburinta qayb ka mid ah anode noqon Dhaqdhaqaaqa, aagga ku hareeraysan wuxuu noqdaa aag cathode ah, saamiga aagga ee labada waa mid aad u yar, cufnaanta anodic ee hadda waa mid aad u weyn, waxqabadka xalinta ayaa la dedejiyay, ka dibna waxay noqdeen tiro godad irbad u eg.
Birta aan la taaban karin, iyo sidoo kale biraha kale ee ku tiirsandareencaabbinta daxalka, ee xal ka kooban anion gaar ah (chloride, bromide, hypochlorite, ama ion thiosulfate).Ilaa inta awooda daxalka (ama awooda lagu dabaqo inta lagu jiro poliisation anodic) ay ka badato awooda daxalka ee Eb, godadka ayaa dhici kara.Habka loo dajiyo daxalka birta duplex-ka ah ee aan lahayn waxay la mid tahay birta kale ee aan nadiifka ahayn.
Bir la daweeyayoo leh warbaahinta oxidising, heerka daxalka marka loo eego asalka aan la daweyn ka hor inta aan si weyn hoos ugu dhicin dhacdada loo yaqaan passivation birta.Habka daah-furnaanta ayaa inta badan loo isticmaali karaa in lagu sharaxo aragtida filimka khafiifka ah, taas oo ah,dareenwaxaa sabab u ah doorka birta iyo oxidising warbaahinta, doorka dusha birta si ay u abuuraan aad u khafiif ah, cufan, waxqabadka dabool wanaagsan, si adag loogu dhejin karaa filimka passivation dusha biraha.Filimkan oo galay waji gooni ah ayaa jira, badiyaa ogsijiinta iyo iskudhisyada birta ah.Waxay ka ciyaartaa doorka warbaahinta birta iyo daxalka oo gebi ahaanba ka soocay doorka ka hortagga birta iyo warbaahinta daxalka ee xidhiidhka tooska ah, si ay birta asal ahaan u joojiso kala dirida si ay u sameyso xaalad xaddidan si looga hortago saameynta daxalka.
Waqtiga boostada: Dec-27-2023