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Vojnotehnički glasnik
2012, vol. 60, br. 3, str. 71-89
jezik rada: engleski
vrsta rada: izvorni naučni članak
doi:10.5937/vojtehg1203071M


Proučavanje karakteristika plazma-sprej zaptivnih aluminijum-silicijum-poliester prevlaka
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

U studiji je prikazana homologacija plazma-sprej parametara meke abrazivne AlSi-poliester zaptivke radi njene primene na delu kompresora motora TV2-117A. Cilj istraživanja je bilo supstituisanje postojećeg zaptivnog materijala novom klasom materijala da bi se povećao efekat zaptivanja i pod najvećim pritiskom obezbedio protok kroz kompresor vazduha temperature od 100 do 125°C. Na prstenu vazdušnog lavirinta, kao dela kompresora turbomlaznog motora TV2-117A, primenjen je materijal Metco 601NS i plazma-sprej tehnologija za izradu meke zaptivke. Parametri deponovanja su pažljivo izabrani kako bi se dobila prevlaka sa najboljim karakteristikama u zavisnosti od primene. Pri izboru parametara, kao osnovni parametar, uzet je protok plazma gasa helijuma. Prevlaka sa najboljim mehaničkim i strukturnim karakteristikama deponovana je na prstenu vazdušnog lavirinta da bi se ispitao efekat primene prevlake u sklopu. Mikrostrukture deponovanih slojeva procenjene su na svetlosnom mikroskopu i skening elektronskom mikroskopu (SEM). Mikrostrukturna analiza deponovanih slojeva urađena je u skladu sa standardom Pratt-Whitney. Mehaničke karakteristike prevlaka procenjene su na osnovu ispitivanja makrotvrdoće zaptivnih slojeva metodom HR15Y. Čvrstoće spoja prevlaka ispitane su metodom kidanja na zatezanje. Efekat zaptivanja prstena vazdušnog lavirinta ispitan je u sklopu kompresora motora TV2-117A, na ispitnoj stanici, u trajanju od 42 sata.

Ključne reči

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