IBLOG

Isingeniso esifushane

Imikhiqizo ye-aluminium anodized noma i-aluminium alloy ifakwa kusisombululo se-electrolyte ukuze kusetshenziswe uthayela, futhi inqubo yokwenza ifilimu ye-aluminium oxide ebusweni nge-electrolysis ibizwa ngokuthi ukwelashwa kwe-anodized ye-aluminium ne-aluminium alloy.Ngemuva kokwelashwa kwe-anodic oxidation, i-aluminium surface ingakhiqiza ama-microns amaningana - amakhulu ama-microns wefilimu ye-oxide.Uma kuqhathaniswa nefilimu yemvelo ye-oxide ye-aluminium alloy, ukumelana nokugqwala kwayo, ukumelana nokugqoka nokuhlobisa ngokusobala kuyathuthukiswa futhi kuthuthukisiwe.

Isimiso esiyisisekelo

Umgomo we-anodic oxidation ye-aluminium empeleni umgomo we-hydroelectrolysis.Lapho ugesi udlula, lokhu kusabela okulandelayo kwenzeka:
Ku-cathode, i-H2 ikhishwa kanje: 2H + + 2e → H2
Ku-anode, 4OH-4E → 2H2O + O2, umoya-mpilo owengeziwe awuwona nje umoya-mpilo wamangqamuzana (O2), kodwa futhi ne-atomic oxygen (O) ne-ionic oxygen (O-2), ngokuvamile evezwa njenge-oxygen yamangqamuzana ekuphenduleni.
Njenge-anode, i-aluminiyamu ikhishwa i-oksijini ngenxa yemvula ye-oxygen kuyo ukuze yakhe ifilimu ye-Al2O3 ngaphandle kwamanzi: 2AI + 3[O] = AI2O3 + 1675.7kj Kufanele kuphawulwe ukuthi akuwona wonke umoya-mpilo okhiqizwayo osebenzisana ne-aluminium, kodwa okunye yawo iwa isesimweni segesi.
I-anodic oxidation sekuyisikhathi eside isetshenziswa kabanzi embonini, njengokuthialuminium CNC machining izingxenye.Ngemuva kwe-anodized, izingxenye zemishini ye-aluminium CNC zingathola ukubukeka okumangalisayo nomthamo omuhle we-antioxidant.

Ziningi izindlela zokulebula amagama ahlukene, ezingafingqwa ngale ndlela elandelayo:
Ngokusho kohlobo lwamanje, ingahlukaniswa ibe i-anodizing yamanje eqondile, i-anodizing yamanje eshintshayo, kanye ne-pulsed current anodizing, enganciphisa isikhathi sokukhiqiza ukuze sifinyelele ubukhulu obudingekayo, ungqimba lwefilimu luwugqinsi futhi lufana futhi luminyene, kanye nokumelana nokugqwala. ithuthukiswa kakhulu.
Ngokusho kwe-electrolyte: i-sulfuric acid, i-oxalic acid, i-chromic acid, i-asidi exutshwe ne-organic sulfonic acid yombala wemvelo we-anodic oxidation.
Ngokwezakhiwo zefilimu, ingahlukaniswa ifilimu evamile, ifilimu eqinile (ifilimu ewugqinsi), ifilimu ye-porcelain, ungqimba olukhanyayo lokuguqulwa kanye nongqimba lwesithiyo lwesenzo se-semiconductor.
Indlela ye-anodizing ye-electrosulfuric acid eqondile yamanje iyona ethandwa kakhulu, ngoba ifaneleka i-anodizing aluminium kanye nama-alloys amaningi e-aluminium.Isendlalelo sefilimu sinzima, siqinile futhi asigugi, futhi ukumelana nokugqwala okungcono kungatholakala ngemva kokuvala umgodi. ungqimba lwefilimu alunambala futhi lusobala, lunamandla okukhangisa aqinile kanye nombala olula. I-voltage yokucubungula iphansi, ukusetshenziswa kwamandla amancane; Inqubo ayidingi ukuguqula umjikelezo we-voltage, ovumela ukukhiqizwa okuqhubekayo nokusebenza okuzenzakalelayo kokusebenza; I-Sulfuric acid ayinabungozi kune-chromic acid, ukuhlinzekwa okubanzi, izinzuzo zamanani aphansi.