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Liquid-phase sintering of tungsten carbide-cobalt by laser radiation

: Glaeser, T.; Demmer, A.; Klocke, F.


American Society of Mechanical Engineers -ASME-, Petroleum Division:
9th Biennial Conference on Engineering Systems Design and Analysis 2008. Proceedings. Vol.1 : July 7 - 9, 2008, Haifa, Israel
New York/NY.: ASME, 2009
ISBN: 978-0-7918-4835-7
Biennial Conference on Engineering Systems Design and Analysis <9, 2008, Haifa>
Conference Paper
Fraunhofer IPT ()

Laser Sintering is a powder metallurgical process. The principle of Laser Sintering is based on a local densification of powdered materials as a result of the absorption of laser radiation. Through a cyclic repetition of material application, densification and the lowering of a build-up plate, a three dimensional geometry develops Within the Laser Sintering (liquid-phase sintering) of tungsten carbide-cobalt (WC-Co) the low melting material, the metal binder phase cobalt, is temporarily transferred into the liquid phase. The high melting WC-phase is not melted and remains fine dispersed in the metal binder phase after cooling of the material.