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FME Transactions
2009, vol. 37, br. 1, str. 27-32
jezik rada: engleski
vrsta rada: neklasifikovan
objavljeno: 27/04/2009
Creative Commons License 4.0
Mikrostruktura i mehaničke karakteristike Mo-NiCrBSi prevlake nanete plazma sprej postupkom u atmosferskim uslovima
aInstitut za mikrotalasnu tehniku i elektroniku - IMTEL, Beograd
bUniverzitet u Beogradu, Mašinski fakultet
cTehnikum Taurunum The College of Mechanical Engineering, Belgrade

e-adresa: miki@insimtel.com

Sažetak

Prah koji je korišćen u ovom istraživanju (Mo-NiCrBSi) je mešavina dva praha, praha Mo i praha 'samotekuće' legure NiCrBSi, u procentualnom odnosu 75/25%. Nanošenjem ove mešavine prahova dobijena je 'samotekuća' prevlaka na bazi molibdena. Prevlaka je naneta plazma sprej postupkom u atmosferskim uslovima. Kvalitet ovako dobijene prevlake zavisi od nekoliko parametara kao što su: veličina čestica praha koji se nanosi, temperatura nanošenja, vrsta gasova koji se koriste, količina unetog praha, ugao i tempo nanošenja (kontinualno ili sa prekidima), rastojanje plazma sprej pištolja od osnove, temperatura osnove, primenjeni pritisak tokom postupka itd. Sve ove parametre treba pažljivo izabrati kako bi se dobile prevlake sa najboljim karakteristikama, a u zavisnosti od željene primene. U ovom istraživanju su korišćene tri grupe Mo-NiCrBSi prevlaka dobijene sa tri različita rastojanja plazma sprej pištolja od osnove. Mikrostrukture i mehaničke karakteristike dobijenih prevlaka su analizirane da bi se došlo do optimalnih parametara nanošenja tj. do onih koji daju najbolje rezultate.

Ključne reči

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