Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés
J. Phys. IV France 03 (1993) C7-1781-C7-1786
Sintering by infiltration of loose mixture of powders, a method for metal matrix composite elaborationV. CONSTANTINESCU, R. ORBAN and H. COLAN
Technical University of Cluj-Napoca, Faculty of Materials Science and Materials Engineering, Department of Materials Science and Materials Technology, Str. C. Daicoviciu 15, 3400 Cluj-Napoca, Romania
Starting from the observation that Sintering by Infiltration of Loose Mixture of Powders confers large possibilities for both complex shaped and of large dimensions Particulate Reinforced Metal Matrix Composite components elaboration, its mechanism comparative with those of the classical melt infiltration was investigated. Appropriate measures in order to prevent an excessive hydrostatic flow of the melt and, consequently, reinforcement particle dispersion, as well as to promote wetting in both infiltration and liquid phase sintering stages of the process were established as necessary. Some experimental results in the method application to the fusion tungsten carbide and diamond reinforced metal matrix composite elaboration are, also, presented.
© EDP Sciences 1993