Amathuluzi edayimane afakwe ngogesi ahilela izinqubo eziningi enkambisweni yokukhiqiza, noma iyiphi inqubo ayanele, izobangela ukuthi i-coating iwe.
Umphumela wokwelashwa kwangaphambi kokufakwa kweplati
Inqubo yokwelapha i-matrix yensimbi ngaphambi kokungena ethangini lokufaka i-plating ibizwa ngokuthi ukwelashwa kwangaphambi kokufaka i-plating. Ukwelashwa kwangaphambi kokufaka i-plating kuhlanganisa: ukupholisha ngomshini, ukususa uwoyela, ukuguguleka kanye nezinyathelo zokuqalisa. Inhloso yokwelapha kwangaphambi kokufaka i-plating ukususa i-burr, uwoyela, ifilimu ye-oxide, ukugqwala kanye nesikhumba se-oxidation ebusweni be-matrix, ukuze kuvezwe insimbi ye-matrix ukuze ikhule i-lattice yensimbi ngendlela evamile futhi yakhe amandla okubopha phakathi kwama-molecule.
Uma ukwelashwa kwangaphambilini kokufaka i-plating kungalungile, ubuso be-matrix bunefilimu kawoyela encane kakhulu kanye nefilimu ye-oxide, uhlamvu lwensimbi ye-matrix alukwazi ukudalulwa ngokuphelele, okuzovimbela ukwakheka kwensimbi yokuhlanganisa kanye nensimbi ye-matrix, okuyi-inlay yomshini kuphela, amandla okubopha awalungile. Ngakho-ke, ukwelashwa okubi ngaphambi kokufaka i-plating kuyimbangela eyinhloko yokuchitheka kokufaka i-coating.
Umphumela we-plating
Ifomula yesisombululo sokucwebezela ithinta ngqo uhlobo, ubulukhuni kanye nokumelana nokuguguleka kwensimbi yokucwebezela. Ngamapharamitha enqubo ahlukene, ukujiya, ubuningi kanye nokucindezeleka kokukristala kwensimbi yokucwebezela nakho kungalawulwa.
Ekukhiqizweni kwamathuluzi okufaka i-diamond electroplating, abantu abaningi basebenzisa i-nickel noma i-nickel-cobalt alloy. Ngaphandle kwethonya lokungcola kokufaka i-plating, izici ezithinta ukuchithwa kwe-coating yilezi:
(1) Ithonya lokucindezeleka kwangaphakathi Ukucindezeleka kwangaphakathi kwengubo kukhiqizwa enkambisweni yokuma kwe-electrode, kanti izithasiselo kugagasi elincibilikisiwe kanye nemikhiqizo yazo yokubola kanye ne-hydroxide kuzokwandisa ukucindezeleka kwangaphakathi.
Ukucindezeleka okukhulu kungabangela amabhamuza, ukuqhekeka nokuwa kwengubo ngesikhathi sokugcina nokusebenzisa.
Ngokufaka i-nickel plating noma i-nickel-cobalt alloy, ukucindezeleka kwangaphakathi kuhluke kakhulu, uma okuqukethwe kwe-chloride kuphakeme, ukucindezeleka kwangaphakathi kuba kukhulu. Ngosawoti oyinhloko wesisombululo sokumboza se-nickel sulfate, ukucindezeleka kwangaphakathi kwesisombululo sokumboza se-watt kuncane kunokwezinye izixazululo zokumboza. Ngokufaka i-organic luminent noma i-ejenti yokuqeda ukucindezeleka, ukucindezeleka kwangaphakathi okukhulu kwesembozo kungancishiswa kakhulu futhi ukucindezeleka kwangaphakathi okungabonakali kunganda.
(2) Umphumela wokuvela kwe-hydrogen kunoma yisiphi isisombululo se-plating, kungakhathaliseki ukuthi i-PH yayo ingakanani, kuhlale kukhona inani elithile lama-ion e-hydrogen ngenxa yokuhlukana kwama-molecule amanzi. Ngakho-ke, ngaphansi kwezimo ezifanele, kungakhathaliseki ukuthi i-plating ifakwa ku-electrolyte ene-acidic, engathathi hlangothi, noma ene-alkaline, kuvame ukuba ne-hydrogen precipitation ku-cathode kanye ne-metal precipitation. Ngemva kokuthi ama-ion e-hydrogen ehlile ku-cathode, ingxenye ye-hydrogen iyaphuma, bese ingxenye ingena ku-matrix metal kanye ne-coating esimweni se-athomu hydrogen. Ihlanekezela i-lattice, ibangele ukucindezeleka okukhulu kwangaphakathi, futhi yenza ne-coating ishintshe kakhulu.
Imiphumela yenqubo yokubeka i-plating
Uma ukwakheka kwesixazululo se-electroplating kanye neminye imiphumela yokulawula inqubo kungafakwanga, ukwehluleka kwamandla enkambisweni ye-electroplating kuyimbangela ebalulekile yokulahleka kwengubo. Inqubo yokukhiqiza i-electroplating yamathuluzi edayimane e-electroplating ihluke kakhulu kwezinye izinhlobo ze-electroplating. Inqubo ye-plating yamathuluzi edayimane e-electroplating ifaka i-plating engenalutho (isisekelo), i-sand coating kanye nenqubo yokuqina. Enkambisweni ngayinye, kukhona ithuba lokuthi i-matrix ishiye isixazululo se-plating, okungukuthi, ukucima kukagesi okude noma okufushane. Ngakho-ke, ukusetshenziswa kwenqubo enengqondo, inqubo kunganciphisa nokuvela kwesenzakalo sokuchitha i-coating.
Lesi sihloko siphinde sanyatheliswa kusukela ku-"Inethiwekhi Yezinto Ezinkulu ZaseShayina"
Isikhathi sokuthunyelwe: Mashi-14-2025
