Firimu re "anodic oxide" riri pazvikamu zve "aluminum alloy" zvemotokari rinoshanda se "armor" pamusoro pazvo. Rinoumba "dense" inodzivirira pamusoro pe "aluminum alloy", richisimudzira "corrosion" yezvikamu uye rinowedzera hupenyu hwazvo hwekushanda. Panguva iyi, firimu re "oxide" rine kuoma kwakanyanya, izvo zvinogona kuvandudza "ferret resistance" ye "aluminum alloy".
Firimu re anodic oxide realuminium alloy rinoratidzwa nehukobvu hudiki uye kuomarara kwakanyanya. Zvakakosha kusarudza michina yekuyedza yakakodzera kuomarara kudiki kudzivirira kukuvara kwefirimu ne indenter. Saka, tinokurudzira kushandisa micro Vickers hardness tester ine simba rekuyedza re 0.01-1 kgf kuti iedze kuomarara kwayo uye ukobvu hwayo. Pamberi pekuedzwa kwekuomarara kweVickers, workpiece inofanira kuyedzwa inofanira kugadzirwa kuita sample. Midziyo inodiwa imuchina we metallographic mounting (danho iri rinogona kusiiwa kana workpiece ine nzvimbo mbiri dzakati sandara) kuti uise workpiece mumuenzaniso une nzvimbo mbiri dzakati sandara, wobva washandisa metallographic grinding and polishing machine kukuya nekupukuta sample kusvika yaonekwa. Muchina we mounting ne grinding & polishing machine zvinoratidzwa mumufananidzo uri pazasi:
1. Matanho Ekugadzirira Muenzaniso (Anoshanda Pakuyedzwa Kwekuoma Uye Kukobvu)
1.1 Kutora Sample: Cheka sampuro inosvika 10mm × 10mm × 5mm kubva muchikamu chichaedzwa (kudzivirira nzvimbo yekumanikidzwa kwechikamu), uye iva nechokwadi chekuti nzvimbo yekuyedza ndiyo yepamusoro pefirimu re oxide.
1.2 Kuisa: Isa sampuli nezvinhu zvinopisa zvekuisa (semuenzaniso, epoxy resin), zvichiratidza pamusoro pefirimu reoxide uye chikamu chepakati (chikamu chepakati chinodiwa kuti kuyedzwe ukobvu) kudzivirira kushanduka kwesampuli panguva yekukuya.
1.3 Kukuya neKupukuta: Kutanga, gadzira kukuya kwakanyorova nhanho nhanho uchishandisa sandpaper ye400#, 800#, uye 1200#. Wobva wapukuta nedhaimani re1μm ne0.5μm. Pakupedzisira, iva nechokwadi chekuti firimu reoxide nesubstrate hazvina kukwenywa uye zvinoonekwa zvakajeka (chikamu chakachinjika chinoshandiswa pakuongorora ukobvu).
2. Nzira yekuedza: Vickers Microhardness Method (HV)
2.1 Nheyo Yepamusoro: Shandisa dhaimani inopinza piramidhi kuisa mutoro mudiki (kazhinji 50-500g) pamusoro pefirimu kuti ugadzire gomba, uye verenga kuomarara zvichibva pakureba kwegomba.
2.2 Zvikamu Zvikuru: Mutoro unofanira kuenderana neukobvu hwefirimu (sarudza mutoro < 100g kana ukobvu hwefirimu < 10μm kudzivirira kupinda mukati megomba)
Chinokosha kusarudza mutoro unoenderana neukobvu hwefirimu uye kudzivirira mutoro wakawandisa kuti usapinde mufirimu re oxide, izvo zvinoita kuti mhedzisiro yakayerwa isanganise kukosha kwekuoma kwe substrate yealuminium alloy (kuoma kwe substrate kwakaderera zvikuru pane kwefirimu re oxide).
Kana ukobvu hwefirimu re oxide huri 5-20μm: Sarudza mutoro we 100-200g (semuenzaniso, 100gf, 200gf), uye dhayamita yekudzika inofanira kudzorwa mukati me 1/3 yeukobvu hwefirimu (semuenzaniso, kune ukobvu hwefirimu hwe 10μm, dhayamita yekudzika ≤ 3.3μm).
Kana ukobvu hwefirimu re oxide huri <5μm (firimu rakatetepa zvakanyanya): Sarudza mutoro uri pasi pe50g (semuenzaniso, 50gf), uye lenzi ine magnification akawanda (40x kana kupfuura) inofanira kushandiswa kuona kupinda mukati kuti isapinde.
Pakuita bvunzo yekuomarara, tinotarisa kune standard: ISO 10074:2021 “Specification for Hard Anodic Oxide Coatings on Aluminium and Aluminium Alloys”, iyo inotsanangura zvakajeka simba rekuyedza uye huwandu hwekuomarara hunofanira kushandiswa pakuyera mhando dzakasiyana dze oxide coatings ne micro Vickers hardness tester. Tsanangudzo dzakadzama dzinoratidzwa mutafura iri pazasi:
Tafura: Kugamuchirwa kweVickers microhardness test
| chiwanikwa | Kuomarara kudiki / HV0.05 |
| Kirasi 1 | 400 |
| Kirasi 2(a) | 250 |
| Kirasi 2(b) | 300 |
| Kirasi 3(a) | 250 |
| Kirasi 3(b) | Zvichabvumiranwa |
Cherechedza: Kune mafirimu e oxide ane ukobvu hunopfuura 50 μm, kukosha kwawo kwehukobvu hudiki kwakaderera, kunyanya chikamu chekunze chefirimu.
2.3 Nzira dzekudzivirira:
Pachikamu chimwe chete ichocho, mapoinzi matatu anofanira kuyerwa munzvimbo imwe neimwe yenzvimbo nhatu dzakasiyana, uye avhareji yehuwandu hwemapoinzi mapfumbamwe edata inofanira kutorwa sehukoshi hwekupedzisira kudzivirira kukanganisa kwemafirimu emuno pamhedzisiro.
Kana "mitswe" kana "ma "blurred interfaces" zvikaonekwa pamucheto we indentation, zvinoratidza kuti mutoro wacho wakakura zvakanyanya uye wapinda mu firimu. Mutoro wacho unofanira kuderedzwa uye bvunzo inofanira kuitwazve.
Nguva yekutumira: Gunyana-08-2025
