Izindaba

I-Aluminium iyinsimbi eyisisekelo futhi i-oxidize ngokushesha lapho ihlangana nomoya. Ngokombono wamakhemikhali, ungqimba lwe-oxide olwakhiwe luzinze kakhulu kune-aluminium ngokwayo futhi lokhu kuyisihluthulelo sokumelana nokugqwala kwe-aluminium. Kodwa-ke, ukuphumelela kwalolu ungqimba kungabuye kuncishiswe - ngezakhi ze-alloying, isibonelo. Yilokhu okudingeka ukwazi.

Kuzinhlelo zokusebenza lapho ukubonakala okubonakalayo kungabalulekile khona, ungqimba lwemvelo lwe-oxide lunganikeza ukuvikeleka okwanele kokugqwala. Kodwa uma i-aluminium izopendiwa, iboshwe, noma isetshenziswe endaweni ebolayo, ukwelapha kwangaphambili kuyadingeka ukuze kudalwe indawo ezinzile futhi echazwe kahle. Ukwakheka kwezingqimba ze-aluminium oxide kungahluka, kuye ngezimo zokubunjwa, izakhi ze-alloying, nokungcola. Uma amanzi ekhona phakathi ne-oxidation, amanzi e-crystal angase abe khona kungqimba lwe-oxide. Ukuzinza kongqimba lwe-oxide kuthonywa ukwakheka kwayo.

I-Aluminium oxide ngokuvamile izinzile ngaphakathi kwebanga le-pH elingu-4 ukuya ku-9. Ngaphandle kwalobu bubanzi, ingozi yokugqwala iphezulu. Ngakho-ke, zombili izixazululo ezine-asidi neze-alkaline zingasetshenziswa ukufaka izindawo ezingaphezulu ze-aluminium ngesikhathi sokwelashwa kwangaphambili.

Izakhi ze-alloying ezithinta ukugqwala

Ngaphandle kwezakhiwo zokuvikela zengqimba ye-oxide, ukumelana nokugqwala kwama-alloys e-aluminium kunqunywa ukuba khona kwezinhlayiya ezinhle ze-intermetallic. Lapho kukhona isisombululo se-electrolyte, esifana namanzi noma usawoti, ukugqwala kungenzeka, nezinhlayiya ezinhle ezisebenza njengama-cathodes kanye nezindawo ezizungezile zibe ama-anode lapho i-aluminium incibilika khona.

Ngisho nezinhlayiya ezinenani elincane lezinto ezinhle zingabonisa ukuhlonishwa okuphezulu ngenxa yokuncibilika okukhethekile kwe-aluminium ezindaweni zazo. Izinhlayiya eziqukethe insimbi zinciphisa kakhulu ukumelana nokugqwala, kuyilapho ithusi linciphisa ukumelana nokugqwala. Ukugxila okuphezulu kokungcola, njengomthofu, emingceleni yokusanhlamvu nakho kuba nomthelela omubi ukumelana nokugqwala.

Ukumelana nokugqwala kuma-alloys angu-5000 no-6000 ochungechunge

Ama-alloys e-aluminium avela ochungechungeni lwe-5000 kanye no-6000 ngokuvamile anamazinga aphansi wezinto ezixubekile nezinhlayiya ze-intermetallic, okuholela ekumelaneni nokugqwala okuphezulu. Amandla aphezulu angu-2000-series alloys, avame ukusetshenziswa embonini yezindiza, ngokuvamile ane-cladding encane ye-aluminium ehlanzekile ukuvimbela ukugqwala.

Ama-alloys agaywe kabusha avame ukuqukatha amazinga anyukile we-trace elements, okuwenza athonyeke kalula ukugqwala. Kodwa-ke, ukuhluka kokumelana nokugqwala phakathi kwama-alloys ahlukene, futhi ngisho nangaphakathi kwe-alloy efanayo, ngenxa yezindlela zokukhiqiza nokwelashwa kokushisa, kungaba kukhulu kunalokho okubangelwa izakhi zokulandelela zodwa.

Ngakho-ke, kubalulekile ukufuna ulwazi lwezobuchwepheshe kumphakeli wakho, ikakhulukazi uma ukumelana nokugqwala kubalulekile emkhiqizweni wakho. I-Aluminium ayiyona into efanayo, futhi ukuqonda izici zayo ezithile kubalulekile ekukhetheni umkhiqizo ofanele we-aluminium ngezidingo zakho.

Zizwe ukhululekile ukuXhumana nathiuma ufuna ukwazi okwengeziwe.