Effects of TiC addition on properties of laser particle deposited WC–Co–Cr and WC–Ni coatings
作者： B.A. OBADELE , P.A. OLUBAMBI , O.T. JOHNSON
DOI: 10.1016/S1003-6326(13)62911-8
关键词: Ceramic 、 Indentation hardness 、 Microstructure 、 Tungsten carbide 、 Corrosion 、 Metallurgy 、 Composite number 、 Hardness 、 Titanium carbide 、 Materials science
摘要: The mechanisms by which titanium carbide (TiC) improves the properties of tungsten (WC) coatings deposited on duplex stainless steels using laser particle injection technique were investigated. relationships between process parameters and synthesized composite studied. morphologies microstructures feedstock powders characterized scanning electron microscopy (SEM) energy dispersive X-ray spectroscopy (EDX) techniques. Surface hardness layers was determined Vickers microhardness tester while its corrosion behaviour in 3.5% NaCl solution investigated potentiodynamic polarization curve measurement method. As a result treatment, hard ceramic particles with strong bonding to substrate formed surface layer steels. addition TiC WC resulted free from cracks, pores intermetallics could be detrimental composites. High observed most shifted potential more noble values pseudo-passive curve.
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