Sliding wear properties of HVOF sprayed WC–20%Cr3C2–7%Ni cermet coatings

Investigation on microstructure, surface properties and anti-wear performance of HVOF sprayed WC–CrC–Ni coatings modified by laser heat treatment

“…In this investigation, the following wear process can be proposed [16]: when two surfaces are brought into sliding contact at the beginning, the soft and ductile phases, Cr 3 C 2 and nickel matrix between WC particles undergo severe deformation. The deformed Cr 3 C 2 and nickel matrix are extruded by the compressive stress of protruding asperities of Si 3 N 4 .…”

Coatings by Thermal Spray

“…When the reaction is complete, WC-(W,Cr) 2 C-Ni (unlike WC-Co and Cr 3 C 2 -NiCr), is not a simple binary hard phase-binder metal composite; besides WC, the second hard phase (W,Cr) 2 C with varying chromium content appears in larger amounts (Berger, Saaro, Naumann, Ka sparova, et al, 2008). Ishikawa, Kawakita, Osawa, Itsukaichi, Sakamoto, & Takaya, 2005;Ishikawa, Kuroda, Kawakita, Sakamoto, & Takaya, 2007). Coatings can be applied at high temperatures in atmospheric conditions due to a high oxidation resistance; this is another major difference from plain WC-Co and WC-10Co-4Cr (Berger, Saaro, Naumann, Ka sparova, et al, 2008;Berger et al, 2010).…”

Chemical Stability of Chromium Carbide and Chromium Nitride Powders Compared with Chromium Metal in Synthetic Biological Solutions

“…Dissolution studies concerning chromium-containing materials like chromium carbide and chromium nitride are, however, much scarcer and have not been performed with the purpose to evaluate interactions with the environment or the human body [12,13]. Both chromium carbide and chromium nitride are commonly used as coatings on stainless steels, enhancing the wear and corrosion resistance, and have accordingly been thoroughly investigated [14][15][16][17][18][19][20]. Chromium carbide (Cr 3 C 2 ) has been shown to be practically insoluble in boiling HCl [12] whereas Cr 2 N was shown to have higher solubility in HCl compared with CrN [13].…”