ISSN:
1013-9826
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:
This paper describes an investigation of nano-SiC reinforced ceramic coating, which hasincluded NiCrAl and Al2O3+13wt%TiO2 coatings pre-produced by atmosphere plasma spraying,implemented by laser sintering. Commercial NiCrAl powders were plasma sprayed onto 45 steelsubstrates to produce a bond coating with thickness of ~100μm. The Al2O3-TiO2 based coating with~500μm thickness was then plasma sprayed on top of the NiCrAl bond coating. With CO2 laser,nano-SiC powders were laser sintered on Al2O3-TiO2 based coatings. The microstructure andchemical composition of the modified based coatings were analyzed by such detection devices asscanning electronic microscope (SEM) and x-ray diffraction (XRD). The results show that the size ofSiC grains has no obvious growth. In addition, due to the nanostructured SiC phase and laserremelting, the modified coatings exhibited better abrasion resistance than those unmodified samples
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.375-376.348.pdf
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