Ifilimu ye-anodic oxide ezingxenyeni ze-aluminium alloy yezimoto isebenza njengesendlalelo sezivikelo ebusweni bazo. Yakha ungqimba oluqinile lokuvikela ebusweni be-aluminium alloy, ithuthukisa ukumelana nokugqwala kwezingxenye futhi yandise impilo yazo yenkonzo. Okwamanje, ifilimu ye-oxide inobulukhuni obuphezulu, obungathuthukisa ukumelana nokuguguleka kobuso be-aluminium alloy.
Ifilimu ye-anodic oxide ye-aluminium alloy ibonakala ngobukhulu obuncane kanye nobunzima obuphezulu. Kuyadingeka ukukhetha imishini yokuhlola efanelekela ubulukhuni obuncane ukuze kugwenywe umonakalo kungqimba lwefilimu yi-indenter. Ngakho-ke, sincoma ukusebenzisa i-micro Vickers hardness tester enamandla okuhlola angu-0.01-1 kgf ukuhlola ubulukhuni bayo kanye nobukhulu bayo. Ngaphambi kokuhlolwa kobulukhuni be-Vickers, i-workpiece ezohlolwa idinga ukwenziwa ibe isampula. Imishini edingekayo umshini wokufaka i-metallographic (lesi sinyathelo singashiywa uma i-workpiece inezindawo ezimbili eziyisicaba) ukufaka i-workpiece ibe isampula enezindawo ezimbili eziyisicaba, bese usebenzisa umshini wokugaya nokupholisha we-metallographic ukugaya nokupholisha isampula kuze kube yilapho kufinyelelwa indawo ekhanyayo. Umshini wokufaka kanye nomshini wokugaya nokupholisha kuboniswe esithombeni esingezansi:
1. Izinyathelo Zokulungiselela Isampula (Zisebenza Ekuhlolweni Kobulukhuni Nobukhulu)
1.1 Ukusampula: Sika isampula elingaba ngu-10mm × 10mm × 5mm kusuka engxenyeni ezohlolwa (ugweme indawo yokuhlushwa kokucindezeleka kwengxenye), bese uqinisekisa ukuthi indawo yokuhlola iyindawo yokuqala yefilimu ye-oxide.
1.2 Ukufaka: Faka isampula ngezinto zokufaka ezishisayo (isb. i-epoxy resin), okuveza ubuso befilimu ye-oxide kanye nesigaba esiphambene (isigaba esiphambene siyadingeka ukuze kuhlolwe ukujiya) ukuvimbela ukuguquka kwesampula ngesikhathi sokugaya.
1.3 Ukugaya Nokupholisha: Okokuqala, yenza ukugaya okumanzi isinyathelo ngesinyathelo ngama-sandpaper angu-400#, 800#, kanye no-1200#. Bese upholisha ngama-paste okupholisha idayimane angu-1μm kanye no-0.5μm. Okokugcina, qiniseka ukuthi ukuxhumana phakathi kwefilimu ye-oxide kanye ne-substrate akuklwebheki futhi kubonakala kahle (ingxenye evundlile isetshenziselwa ukubuka ukujiya).
2. Indlela Yokuhlola: Indlela Yokuqina Kwe-Vickers Micro (HV)
2.1 Isimiso Esiyinhloko: Sebenzisa i-indenter yephiramidi yedayimane ukufaka umthwalo omncane (ngokuvamile u-50-500g) ebusweni befilimu ukuze udale i-indentation, bese ubala ubulukhuni ngokusekelwe kubude obuqondile be-indentation.
2.2 Amapharamitha Abalulekile: Umthwalo kumele uhambisane nobukhulu befilimu (khetha umthwalo < 100g lapho ubukhulu befilimu < 10μm ukuze ugweme ukungena kwe-inbound ku-substrate)
Isihluthulelo ukukhetha umthwalo ohambisana nobukhulu befilimu futhi uvimbele umthwalo owedlulele ukuthi ungangeni kwifilimu ye-oxide, okungabangela ukuthi imiphumela elinganisiwe ifake inani lobulukhuni be-substrate ye-aluminium alloy (ubulukhuni be-substrate buphansi kakhulu kunobefilimu ye-oxide).
Uma ubukhulu befilimu ye-oxide bungu-5-20μm: Khetha umthwalo ongu-100-200g (isb., 100gf, 200gf), futhi ububanzi bokugoba kumele bulawulwe ngaphakathi kwe-1/3 yobukhulu befilimu (isibonelo, ubukhulu befilimu obungu-10μm, ububanzi bokugoba obungu-≤ 3.3μm).
Uma ukujiya kwefilimu ye-oxide kungu-<5μm (ifilimu encane kakhulu): Khetha umthwalo ongaphansi kuka-50g (isb., 50gf), kanye nelensi eyinhloko yokukhulisa okuphezulu (40x noma ngaphezulu) kumele isetshenziswe ukubona ukugoba ukuze kugwenywe ukungena
Uma senza isivivinyo sobulukhuni, sibhekisela ku-standard: ISO 10074:2021 “Izincazelo ze-Hard Anodic Oxide Coatings ku-Aluminium kanye ne-Aluminium Alloys”, ecacisa ngokucacile amandla okuhlola kanye nobubanzi bobulukhuni okufanele busetshenziswe lapho kulinganiswa izinhlobo ezahlukene ze-oxide coatings ngesivivinyo sobulukhuni se-micro Vickers. Izincazelo ezinemininingwane ziboniswe kuthebula elingezansi:
Ithebula: Amanani okwamukelwa kokuhlolwa kokuqina kwe-Vickers
| Ingxubevange | Ubulukhuni obuncane / HV0.05 |
| Iklasi 1 | 400 |
| Isigaba 2(a) | 250 |
| Isigaba 2(b) | 300 |
| Isigaba 3(a) | 250 |
| Isigaba 3(b) | Kuzovunyelwana ngakho |
Qaphela: Kumafilimu e-oxide anobukhulu obungaphezu kwama-50 μm, amanani awo obulukhuni obuncane aphansi kakhulu, ikakhulukazi ungqimba lwangaphandle lwefilimu.
2.3 Izinyathelo Zokuqapha:
Kwingxenye efanayo, amaphuzu ama-3 kufanele alinganiswe endaweni ngayinye kwezi-3 ezahlukene, futhi inani elimaphakathi lamaphuzu edatha angu-9 kufanele lithathwe njengobunzima bokugcina ukuze kugwenywe umthelela wokukhubazeka kwefilimu yendawo emiphumeleni.
Uma kuvela “imifantu” noma “izixhumi ezifiphele” emaphethelweni okugoba, kusho ukuthi umthwalo mkhulu kakhulu futhi ungene ungqimba lwefilimu. Umthwalo kufanele uncishiswe futhi ukuhlolwa kufanele kwenziwe kabusha.
Isikhathi sokuthunyelwe: Septhemba-08-2025
