Uburyo bwo gupima ubunini bwa firime ya Okiside n'ubukomere bw'ibice bya aluminiyumu by'imodoka

Filimi ya okiside ya anodike ku bice bya aluminiyumu y'imodoka ikora nk'urwego rw'ingabo ku buso bwabyo. Ikora urwego runini rwo kurinda ku buso bwa aluminiyumu y'aluminiyumu, yongera ubudahangarwa bw'ibice kandi ikamara igihe kirekire. Hagati aho, filimi ya okiside ifite ubukana bwinshi, bushobora kongera ubudahangarwa bw'ubuso bwa aluminiyumu.

Agace k'icyuma ka anodike ka aluminiyumu karangwa n'ubugari buto n'ubukomere bwinshi. Ni ngombwa guhitamo ibikoresho byo gupima bikwiye ubukomere buto kugira ngo wirinde kwangirika k'urwego rwa firime n'icyuma gipima. Kubwibyo, turasaba gukoresha icyuma gipima ubukomere buto cya Vickers gifite imbaraga za 0.01-1 kgf kugira ngo gipime ubukomere n'ubunini bwacyo. Mbere yo gupima ubukomere bwa Vickers, icyuma gipima kigomba gukorwamo icyitegererezo. Ibikoresho bikenewe ni icyuma gipima ubukomere (iyi ntambwe irashobora gusibwa niba icyuma gipima gifite ubuso bubiri burambuye) kugira ngo ushyire icyuma mu cyitegererezo gifite ubuso bubiri burambuye, hanyuma ukoreshe icyuma gipima no gusiga irangi kugira ngo usya kandi usye icyitegererezo kugeza ubuso bugaragara. Imashini ishyiraho n'imashini isya no gusiga irangi bigaragazwa ku ishusho iri hepfo:

1. Intambwe zo gutegura (zikoreshwa mu gupima ubukomere n'ubunini)

1.1 Gutoranya: Kata icyitegererezo cya mm 10 × 10 × 5 mm uvuye ku gice kigiye gupimwa (wirinde agace k’umuvuduko w’igice), kandi urebe neza ko ubuso bw’ikizamini ari bwo ubuso bw’umwimerere bwa firime ya okiside.

1.2 Gushyiraho: Shyira icyitegererezo ukoresheje ibikoresho bishyushye byo gushyiramo (urugero: epoxy resin), ushyire ahagaragara ubuso bwa oxide film n'igice cyayo (igice cyayo kirakenewe kugira ngo hakorwe isuzuma ry'ubugari) kugira ngo hirindwe ko icyitegererezo cyahinduka mu gihe cyo gusya.

1.3 Gusya no Gusukura: Ubwa mbere, kora intambwe ku yindi usya ukoresheje impapuro z'umucanga za 400#, 800#, na 1200#. Hanyuma usya ukoresheje 1μm na 0.5μm diyama zisukura. Hanyuma, menya neza ko aho filime ya okiside n'igice cy'umucanga nta gushwanyagurika kandi bigaragara neza (igice cy'umucanga gikoreshwa mu kureba ubugari).

2. Uburyo bwo gupima: Uburyo bwa Vickers Microhardness (HV)

2.1 Ihame ry'ingenzi: Koresha piramide ya diyama kugira ngo ushyireho umutwaro muto (ubusanzwe 50-500g) ku buso bwa firime kugira ngo ukore akantu ko guhagarara, hanyuma ubare ubukana ukurikije uburebure bw'akantu ko guhagarara.

2.2 Ibipimo by'ingenzi: Umutwaro ugomba kuba uhuye n'ubugari bwa firime (hitamo umutwaro < 100g iyo ubugari bwa firime < 10μm kugira ngo wirinde ko icyuho cyinjira muri substrate)

Icy'ingenzi ni uguhitamo umutwaro ujyanye n'ubugari bwa firime no gukumira umutwaro urenze urugero kwinjira muri firime ya oksidi, ibyo bigatuma ibisubizo byapimwe bikubiyemo agaciro k'ubukomere bwa firime ya aluminium alloy (ubukomere bwa firime ni buke cyane ugereranyije n'ubwa firime ya oksidi).

Niba ubugari bwa firime ya okiside ari 5-20μm: Hitamo umutwaro wa 100-200g (urugero, 100gf, 200gf), kandi umurambararo w'umubyimba ugomba kugenzurwa muri 1/3 cy'ubugari bwa firime (urugero, ku bugari bwa firime ya 10μm, uburebure bw'umubyimba ≤ 3.3μm).

Niba ubugari bwa firime ya okiside buri < 5μm (firime nto cyane): Hitamo umutwaro uri munsi ya 50g (urugero, 50gf), kandi lensi ifite ubushobozi bwo kongera ubwinshi bw'amajwi (40x cyangwa irenga) igomba gukoreshwa kugira ngo harebwe aho ijya kugira ngo hirindwe kwinjira.

Mu gihe cyo gukora ikizamini cy’ubukana, twerekeje ku gipimo gikurikira: ISO 10074:2021 “Ibisobanuro ku biti bikomeye bya Okiside kuri Aluminiyumu na Aluminiyumu”, kigaragaza neza imbaraga z’ikizamini n’urwego rw’ubukana bigomba gukoreshwa mu gupima ubwoko butandukanye bw’ibiti bya Okiside hifashishijwe micro Vickers hardness tester. Ibisobanuro birambuye bigaragazwa mu mbonerahamwe iri hepfo:

Imbonerahamwe: Agaciro ko kwemerwa kw'ikizamini cya Vickers cy'ubukomere

Icyitonderwa: Ku mafirime ya okiside afite ubugari burenga 50 μm, agaciro kayo ka microhardness ni gake cyane, cyane cyane urwego rwo hanze rwa firime

2.3 Amabwiriza yo kwirinda:

Ku gice kimwe, amanota 3 agomba gupimwa muri buri gace muri 3 gatandukanye, kandi agaciro mpuzandengo k'amakuru 9 gakwiye gufatwa nk'ubukana bwa nyuma kugira ngo hirindwe ingaruka z'ubusembwa bwa firime yo mu gace runaka ku bisubizo.
Iyo "imicanganyiko" cyangwa "imiyoboro idasobanutse" bigaragara ku nkengero z'aho binjirira, bigaragaza ko umutwaro ari munini cyane kandi winjiye mu gice cya firime. Umutwaro ugomba kugabanuka kandi ikizamini gikwiye kongera gukorwa.