ISSN:
1662-8985
Quelle:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Thema:
Maschinenbau
Notizen:
With the aim to obtain the high cavitation-erosion-resistance coating for the surfacesafeguard of fluid machinery, two kinds of hard coatings (WC-Cr-Co and Cr3C2-NiCr) wereprepared on 1Cr18Ni9Ti substrate by high velocity oxy-fuel spraying (HVOF), whichmicrostructure and performance were investigated respectively by optical microscope, X-raydiffraction, Vickers hardness, scanning electron microscope (SEM), and vibratory cavitationapparatus. The results indicated that these two coatings had the higher hardness and the finerstructure than ZG06Cr13Ni5Mo, which is used actual in water conservancy. The results ofcavitation erosion continued for 39 hours presented that the mass loss of WC-Cr-Co and Cr3C2-NiCr coatings increased ceaselessly with time, and the cavitation erosion speeds varied with time.Compared with ZG06Cr13Ni5Mo, their cavitation erosion resistance performances were better dueto their higher hardness and finer structure, and WC-Cr-Co coating was much better thanCr3C2-NiCr coating. Obviously, the higher hardness and finer structure could strengthen thecavitation erosion resistance of coating materials
Materialart:
Digitale Medien
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.15-17.199.pdf
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