442 Metal Matrix Composites with a High Content of Ceramic Reinforcement Manufactured by a Pressureless Infiltration Method

Friday, November 6, 2009: 2:40 PM
Pancho Villa (Camino Real Hotel)
Egberto J. Bedolla Sr., Full professor , Instituto de Investigaciones Metalúrgicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico
Metal matrix composites (MMC) reinforced with ceramic particles offer high strength  values of elastic modulus  as well as good high-temperature properties compared with the corresponding monolitic materials used as the matrix. In the present talk  a recount  of the performed research done on manufacturing and characterization of materials made of  MMCs, using the technique of infiltrating by capillarity without external pressure assistance at the Instituto de Investigaciones Metalúrgicas de la Universidad Michoacana de San Nicolás de Hidalgo will be presented. We report the results of making composites materials using porous preforms  of titanium carbide and aluminum nitride, using as a matrix aluminum and magnesium and some of their commercial alloys, also we well present some results of investigations carried out on wettability of  these ceramic materials by the  alloys mentioned before. Main attention is going to be focused  on the corrosion  behavior of  a Mg-AZ91E/TiC composite.