publication . Article . 2005

MICROSTRUCTURE AND WEAR PROPERTIES OF COMPOSITE COATINGS PRODUCED BY LASER CLADDING OF Ti-6Al-4V WITH GRAPHITE AND SILICON MIXED POWDERS

Y. S. TIAN; C. Z. CHEN; D. Y. WANG; Q. H. HUO; T. Q. LEI;
Open Access
  • Published: 01 Jan 2005 Journal: Surface Review and Letters, volume 12, issue 2, pages 161-165
Abstract
<jats:p> Composite coatings are fabricated by laser cladding of titanium alloy Ti-6Al-4V with graphite and silicon mixed powders. X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS) indicate that the coatings mainly consist of pre-eutectic TiC and eutectic Ti <jats:sub>5</jats:sub> Si <jats:sub>3</jats:sub> compounds. Test results show that the coatings exhibit a higher microhardness and a lower friction coefficient compared with the as-received sample. EPMA micrographs show that the compounds' morphology in the top zone of the coatings is different from that in the transitional zone. </jats:p>
Subjects
free text keywords: Laser cladding, titanium alloy, carbides and silicides, friction coefficient, Materials Chemistry, Surfaces, Coatings and Films, Surfaces and Interfaces, Condensed Matter Physics, Graphite, Energy-dispersive X-ray spectroscopy, Metallurgy, Titanium alloy, Eutectic system, Silicon, chemistry.chemical_element, chemistry, Microstructure, Composite number, Cladding (metalworking)
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