Water Droplet Erosion Resistance of Aluminizing Diffusion Coatings on Steel Tubes

Laser deposited TiC/H13 tool steel composite coatings and their erosion resistance

The present work studies the synthesis and performance of TiC/H13 tool steel composite coatings obtained by the laser deposition technique. he effect of laser beam-scanning speeds and the concentrations of TiC in injected powder on the morphologies and microstructures of deposited eads are investigated. The results show that the beam-scanning speeds affect the size and morphology of the beads. ...

Chromizing-aluminizing and Chromizing-siliconizing Coating of a Ferritic Steel

Thermal Stability of Phosphate Coatings on Steel

P. Pokorny, M. Novak, L. Mastny Institute of Chemical Technology, Prague, Czech Republic P. Szelag Pragochema Prague, Department of Research of Surface Treatment of Metals, Prague, Czech Republic V. Brozek Institute of Plasma Physics ASCR Prague, Czech Republic The work was validated thermal stability of zinc, manganese and tri-cations phosphate coatings on steel, made from commercial phosphati...

Effect of Porosity on Cavitation Erosion Resistance of HVOF Processed Tungsten Carbide Coatings

The phenomenon of cavitation is widely experienced in both pumps and under-water components of hydro power plants. The mechanism of material damage during cavitation is mainly attributed to implosion of high velocity bubbles on to the surface giving raise to local increase in stresses in excess of 1.4 GPa. In addition, material wastage due to particle induced erosion is observed in hydro plants...

Influence of impact speed on water droplet erosion of TiAl compared with Ti6Al4V

Water Droplet Erosion (WDE) as a material degradation phenomenon has been a concern in power generation industries for decades. Steam turbine blades and the compressor blades of gas turbines that use water injection usually suffer from WDE. The present work focuses on studying erosion resistance of TiAl as a potential alloy for turbine blades compared to Ti6Al4V, a frequently used blade alloy. ...