Ifilimu ye-anodic oxide kwiindawo ze-aluminium alloy zemoto isebenza njengomaleko wezixhobo zokuzikhusela kumphezulu wazo. Yenza umaleko oqinileyo wokukhusela kumphezulu we-aluminium alloy, iphucula ukumelana nokugqwala kwamalungu kwaye yandise ubomi bawo benkonzo. Okwangoku, ifilimu ye-oxide inobunzima obuphezulu, obunokuphucula ukumelana nokuguguleka komphezulu we-aluminium alloy.
Ifilimu ye-anodic oxide ye-aluminium alloy iphawulwa bubukhulu obuncinci kunye nobunzima obuphezulu. Kubalulekile ukukhetha izixhobo zokuvavanya ezifanelekileyo kwi-micro hardness ukuze kuthintelwe ukonakala komaleko wefilimu yi-indenter. Ke ngoko, sicebisa ukusebenzisa i-micro Vickers hardness tester enamandla ovavanyo angama-0.01-1 kgf ukuvavanya ubunzima bayo kunye nobukhulu bayo. Ngaphambi kovavanyo lwe-Vickers hardness, i-workpiece eza kuvavanywa kufuneka yenziwe ibe yisampulu. Izixhobo ezifunekayo ngumatshini wokufaka i-metallographic (eli nyathelo lingashiywa ukuba i-workpiece ineendawo ezimbini ezithe tyaba) ukufaka i-workpiece kwisampulu eneendawo ezimbini ezithe tyaba, emva koko sebenzisa umatshini wokugaya nokupolisha we-metallographic ukupolisha nokupolisha isampuli de kufikelelwe kumphezulu okhanyayo. Umatshini wokufaka kunye nomatshini wokugaya nokupolisha uboniswe kumfanekiso ongezantsi:
1. Amanyathelo okulungiselela isampulu (Asebenza kuvavanyo loBulukhuni kunye nokutyeba)
1.1 Ukusampula: Sika isampuli emalunga ne-10mm × 10mm × 5mm kwinxalenye eza kuvavanywa (ukuphepha indawo yoxinzelelo lwenxalenye), kwaye uqinisekise ukuba umphezulu wovavanyo ngumphezulu wokuqala wefilimu ye-oxide.
1.2 Ukufakela: Faka isampuli ngezinto zokufakela ezishushu (umz., i-epoxy resin), iveza umphezulu wefilimu ye-oxide kunye necandelo elinqamlezileyo (icandelo elinqamlezileyo liyafuneka ukuze kuvavanywe ubukhulu) ukuthintela ukuguquka kwesampuli ngexesha lokusila.
1.3 Ukusila nokuPolisha: Okokuqala, yenza ukusila okumanzi inyathelo ngenyathelo usebenzisa amaphepha e-sandpaper angama-400#, 800#, kunye nama-1200#. Emva koko polisha nge-1μm kunye ne-0.5μm yedayimani yokupolisha. Okokugqibela, qinisekisa ukuba unxibelelwano phakathi kwefilimu ye-oxide kunye ne-substrate alunamikrwelo kwaye lubonakala ngokucacileyo (icandelo elinqamlezileyo lisetyenziselwa ukujonga ubukhulu).
2. Indlela yoVavanyo: Indlela yoBulukhuni beVickers (HV)
2.1 Umgaqo-siseko: Sebenzisa i-indenter yephiramidi yedayimani ukufaka umthwalo omncinci (ngesiqhelo i-50-500g) kumphezulu wefilimu ukwenza i-indentation, kwaye ubale ubunzima ngokusekelwe kubude obuphakathi be-indentation.
2.2 Iiparameter eziphambili: Umthwalo kufuneka uhambelane nobukhulu befilimu (khetha umthwalo < 100g xa ubukhulu befilimu < 10μm ukuze uphephe ukungena kwesikhumba kwi-substrate)
Eyona nto ibalulekileyo kukukhetha umthwalo ohambelana nobukhulu befilimu kwaye uthintele umthwalo ogqithisileyo ukuba ungangeni kwifilimu ye-oxide, nto leyo eya kubangela ukuba iziphumo ezilinganisiweyo zibandakanye ixabiso lobunzima be-substrate ye-aluminium alloy (ubulukhuni be-substrate buphantsi kakhulu kunobo befilimu ye-oxide).
Ukuba ubukhulu befilimu ye-oxide buyi-5-20μm: Khetha umthwalo we-100-200g (umz., 100gf, 200gf), kwaye ububanzi bokutsalwa kufuneka bulawulwe ngaphakathi kwe-1/3 yobukhulu befilimu (umzekelo, kubukhulu befilimu ye-10μm, i-diagonal yokutsalwa kwe-indentation ≤ 3.3μm).
Ukuba ubukhulu befilimu ye-oxide buyi-<5μm (ifilimu ebhityileyo kakhulu): Khetha umthwalo ongaphantsi kwe-50g (umz., i-50gf), kwaye kufuneka kusetyenziswe ilensi yokukhulisa okuphezulu (40x okanye ngaphezulu) ukujonga ukungena ukuze kuthintelwe ukungena.
Xa sisenza uvavanyo lobunzima, sibhekisa kumgangatho: ISO 10074:2021 “Iinkcazo ze-Hard Anodic Oxide Coatings kwi-Aluminium kunye ne-Aluminium Alloys”, echaza ngokucacileyo amandla ovavanyo kunye noluhlu lobunzima oluza kusetyenziswa xa kulinganiswa iintlobo ezahlukeneyo ze-oxide coatings nge-micro Vickers hardness tester. Iinkcazo ezineenkcukacha ziboniswe kwitheyibhile engezantsi:
Itheyibhile: Amaxabiso okwamkelwa kovavanyo lwe-microhardness lweVickers
| I-alloy | Ubulukhuni obuncinci / HV0.05 |
| Iklasi 1 | 400 |
| Iklasi yesi-2(a) | 250 |
| Iklasi yesi-2(b) | 300 |
| Iklasi 3(a) | 250 |
| Iklasi 3(b) | Kuza kuvunyelwana ngayo |
Qaphela: Kwiifilimu ze-oxide ezinobukhulu obungaphezulu kwe-50 μm, amaxabiso azo obuncinci aphantsi kakhulu, ingakumbi umaleko ongaphandle wefilimu.
2.3 Amanyathelo okuzikhusela:
Kwicandelo elifanayo, amanqaku ama-3 kufuneka alinganiswe kwindawo nganye kwezi-3 ezahlukeneyo, kwaye ixabiso eliphakathi lamanqaku edatha ali-9 kufuneka lithathwe njengobunzima bokugqibela ukuze kuthintelwe impembelelo yeziphene zefilimu yasekuhlaleni kwiziphumo.
Ukuba kuvela “iintanda” okanye “ii-interfaces ezifipheleyo” kumphetho wokungena, oko kubonisa ukuba umthwalo mkhulu kakhulu kwaye ungene kumaleko wefilimu. Umthwalo kufuneka uncitshiswe kwaye uvavanyo kufuneka luqhutywe kwakhona.
Ixesha leposi: Sep-08-2025
