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Vojnotehnički glasnik
2015, vol. 63, br. 4, str. 46-67
jezik rada: engleski
vrsta rada: pregledni članak
doi:10.5937/vojtehg63-7159


Tehnologije izrade prahova i morfologije čestica prahova
Institut za mikrotalasnu tehniku i elektroniku / IMTEL, Beograd

e-adresa: miki@insimtel.com

Projekat

Mikromehanički kriterijumi oštećenja i loma (MPNTR - 174004)
Razvoj tehnologije izrade obloge i jezgra na bazi domaćih sirovina za proizvodnju specijalnih obloženih elektroda namenjenih za elektrolučno zavarivanje čelika (MPNTR - 34016)

Sažetak

Fizičke osobine i mehanička svojstva prevlaka su pod velikim uticajem tehnologije izrade prahova i parametara plazma sprej procesa. Jedan od veoma bitnih parametara koji utiče na fizička i mehanička svojstva prevlaka su morfologije čestica praha, homogenost, granulacija praha i raspon granulacije, koji su u direktnoj vezi sa tehnologijama izrade prahova. U ovoj studiji opisani su tehnološki procesi proizvodnje prahova koji se najviše koriste i prikazane su morfologija čestica prahova renomiranih proizvođača praha, koje su ispitane skening elektronskom mikroskopijom - SEM. Postoji mnogo studija koje su objavile korelaciju između morfologije i tehnologije izrade prahova sa parametrima depozicije prevlaka. U zavisnosti od procesa proizvodnje praha, čestice poseduju različite karakteristike koje se tiču oblika, veličine, specifične gustine, čistoće, itd. Pošto ove karakteristike imaju značajan uticaj na kvalitet i svojstva deponovanih prevlaka, potrebno je posedovati znanje o karakteristikama praha radi bolje kontrole ponašanja čestica u mlaz plazme, kako bi se proizvele prevlake očekivanih karakteristika. Prahovi imaju raznovrsne karakteristike za koje treba podesiti operativne parametre depozicije kako bi se dobile prevlake željenih osobina.

Ključne reči

Reference

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