ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The influence of dry particle coating on the properties of coatings produced by d.c. arcplasma spraying is reported. A mechanofusion process is used to coat coarser metallic particles withfine ceramic particles without using either binders or solvents. The key parameters affecting themechanofusion process and the corresponding plasma spraying method have been varied in order toincrease the hardness of the resulting composite coatings. Efforts have been made to dispersehomogeneously hard particles (α-Al2O3, SiC) into a metallic matrix (316L stainless steel) and checkif it is possible to limit the oxidation of metallic particles during their flight in the plasma jetflowing in air. The hardness of resulting composite coatings depends on the metallic particle sizeeven when the hard ceramic particles are homogenously dispersed into the metallic matrix. Sprayingmechanofused powder composed of finer stainless steel particles (64 ,m), results in finer structureddeposits that show a higher oxide content. On the contrary, a low oxidation rate of the metallicmatrix is observed when coarser metallic particles (120 ,m), covered by a binary layer of α-Al2O3and SiC are sprayed
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.560.67.pdf
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