Ceramic Coatings on Titanium Alloy by CO2 Laser Treatment
Titel:
Ceramic Coatings on Titanium Alloy by CO2 Laser Treatment
Auteur:
Masse, Jean-Eric Mathieu, Jean-Francois
Verschenen in:
Materials and manufacturing processes
Paginering:
Jaargang 11 (1996) nr. 2 pagina's 199-206
Jaar:
1996-03-01
Inhoud:
Titanium alloys are widely used in various industrial sectors, especially in aeronautics, due to these specific properties: low density, good corrosion resistance, and fairly good mechanical properties. However, they have low wear and gall resistance. This limits their use in tribological applications. To improve surface properties of titanium alloys, one solution is creating hard surface layers. One way of creating such layers is the application of surface treatment with continuous high-power CO2 laser allowing the dispersion of solid additives into the laser-melted zone. Our study deals with the effects of direct powder injection in the laser-melted zone of two different powders (TiC, WC) on increasing hardness and surface modifications of a titanium alloy. Characterizations of the treated areas are carried out using classical techniques (optical micrography, scanning electron microscopy and Vickers microhardness measurements).
Tijdschrift beschrijving