In this study, effect of feedstock particle size and nozzle configuration on deposition, microstructural features, hardness sliding wear behaviour high velocity air fuel (HVAF)-sprayed WC-CoCr coatings was evaluated. Three different powders with nominal sizes 5/20 ?m (fine), 5/30 (medium) 15/45 (coarse) were sprayed employing a HVAF gun four distinct DeLaval configurations involving lengths and...

Abstract Wear leads to high material and energy losses in various industries. The manufacturing of novel nano-carbide WC/CoCr powder feedstock materials promises a further increase the performance thermally sprayed wear protection coatings. A experimental commercial ultra-fine carbide reference are onto 1.0038 substrate by High Velocity Air Fuel (HVAF) spraying. specimens metallographically pre...

Abstract For powder metallurgy processing, the sintering stage, i.e. heat treatment of a compact below melting point -at least- major component, is decisive for establishing microstructure and properties. Thorough studying chemical metallurgical processes occurring during essential attaining optimal product properties, has therefore been focus investigations many decades. Thermoanalytical techn...