Gutezimbere no kubyaza umusaruro ibikoresho bidafite imbaraga bya magnetique nibigaragara cyane mubikoresho bishya bikomeye. Amavuta akomeye akorwa mugucumura karbide yicyuma ya IV A, VA, na VI A mumeza yigihe cyibintu (nka tungsten carbide WC), hamwe nicyuma cyinzibacyuho cyitsinda ryicyuma (cobalt Co, nikel Ni, icyuma Fe) nkicyiciro cyo guhuza binyuze munganda zinganda. Carbide ya tungsten yavuzwe haruguru ntabwo ari magnetique, mugihe Fe, Co, na Ni byose ni magnetique. Gukoresha Ni nkibihuza nibintu bikenewe kugirango habeho amavuta adasanzwe.
Hariho uburyo bukurikira bwo kubona WC Ni urukurikirane rutari rukuruzi rukomeye: 1. Igenzura cyane ibirimo karubone
Kimwe na WC Co alloy, ibirimo karubone nicyo kintu cyingenzi kigira ingaruka zikomeye kubisubizo bya W mugice cyo guhuza WC Ni alloy. Nukuvuga ko, hasi ya karubone yibice bya karubone icyiciro cya aliyumu, niko ubushobozi bukomeye bwo gukemura bwa W mugice cya Ni gihuza, hamwe nibitandukaniro bigera kuri 10-31%. Iyo igisubizo gikomeye cya W mugice cya Ni gihujwe kirenze 17%, ibivangwa biba demagnetisme. Intego yubu buryo ni ukubona ibinini bitarimo magnetiki bigabanya kugabanya karubone no kongera igisubizo gikomeye cya W mugice cyo guhuza. Mu myitozo, ifu ya WC irimo karubone iri munsi yubumenyi bwa karubone isanzwe ikoreshwa, cyangwa ifu ya W yongewe kumvange kugirango igere ku ntego yo kubyara karuboni nkeya. Nubwo bimeze bityo ariko, biragoye cyane kubyara ibinyobwa bidasembuye gusa mugucunga ibirimo karubone.
2. Ongeramo chromium Cr, molybdenum Mo, tantalum Ta
Carbone ndende WC-10% Ni (wt% kuburemere) alloy yerekana ferromagnetism mubushyuhe bwicyumba. Niba hejuru ya 0.5% Cr, Mo, na 1% Ta byongewe muburyo bwicyuma, amavuta menshi ya karubone arashobora kuva muri ferromagnetism akajya kuri magnetism. Mugushyiramo Cr, ibintu bya magnetique ya alloy bigengwa nibirimo karubone, kandi Cr nigisubizo cyumubare munini wigisubizo gikomeye mugice cyo guhuza amavuta, nka W. Umuti hamwe na Mo na Ta ushobora guhinduka gusa a idafite magnetique ivanze kubintu bimwe na bimwe bya karubone. Bitewe numuti muke wa Mo na Ta mugice cyo guhuza, inyinshi murizo zifata gusa karubone muri WC kugirango ikore karbide cyangwa karbide ibisubizo bikomeye. Nkigisubizo, ibivanze bivanze bihinduka kuruhande rwa karuboni nkeya, bigatuma habaho kwiyongera gukomeye kwa W mugice cyo guhuza. Uburyo bwo kongeramo Mo na Ta ni ukubona amavuta adafite magnetique mugabanya ibirimo karubone. Nubwo bitoroshye kugenzura nko kongeramo Cr, biroroshye cyane kugenzura ibirimo karubone kuruta WC-10% Ni alloy. Urutonde rwibirimo karubone rwaguwe kuva 5.8-5.95% rugera kuri 5.8-6.05%.
Imeri:oiltools14@welongpost.com
Twandikire: Grace Ma
Igihe cyo kohereza: Ukwakira-09-2023
