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Vojnotehnički glasnik
2014, vol. 62, br. 4, str. 72-88
jezik rada: engleski
vrsta rada: stručni članak
doi:10.5937/vojtehg62-6318


Legiranje titanijuma kiseonikom u peći za elektropretapanje pod troskom
Donetsk National Technical University, Donetsk, Ukraine

e-adresa: rato@fizmet.dgtu.donetsk.ua

Sažetak

U radu su prikazani rezultati legiranja titanijuma kiseonikom u procesu elektropretapanja pod troskom u peći. Za vezivo, koje sadrzi kiseonik, korišćene su satelit elektrode iz reakcije masenih ostataka mešavine iz poklopca retorte za termalnu redukciju magnezijumtitanijumskog sunđera, specijalno pripremljena mešavina gasa argona i kiseonika sa 30% kiseonika primenjena direktno na mesto topljenja, čestice praha titanijum-oksida mikroveličine 10-15mm i nanoprah titanijum-oksida veličine čestica od 21± 5 nm. Ispitane su struktura i karakteristike titanijuma legiranog kiseonikom iz veziva , gasne faze i praha titanijum-oksida tokom elektropretapanja titanijumovog sunđera pod troskom u peći. Utvrđeno je da se pri sadržaju kiseonika od 0.053%mas.do 0.22%mas. u metalu formira homogena jednofazna struktura tipična za komercijalni titanijum formiran od poliedarnih zrna α-faze. Povećanje koncentracije kiseonika u titanijumu za više od 0.22%mas. dovodi do formiranja mikrostrukture s tipičnom igličastom strukturom, što omogućava da bude klasifikovana kao α ׳-faza.

Ključne reči

titanijum; kiseonik; legiranje; peć za elektropretapanje pod troskom; struktura; karakteristike

Reference

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