| 摘要 |
PROBLEM TO BE SOLVED: To obtain a metal-ceramics composite in which the time required for penetration of a metal is shortened and an Al2 O3 powder minimal in the occurrence of metal-vein is used as a reinforcement. SOLUTION: A preform is prepared by using ceramic fibers or grains as a reinforcement and a metal as a base material is allowed to penetrate into the preform, by which the metal-ceramics composite is produced. In this method, the preform is prepared by adding, as a binder, 1-10 pts.wt. of inorganic powder composed essentially of alumina-silica and having 0.1-100μm average grain size to 100 pts.wt. of Al2 O3 powder having 1-150μm average grain size, molding the resultant powder mixture, and then burning the resultant molded part at 1100-1500 deg.C for 1-5 hr. Subsequently, an alloy composed essentially of aluminum is allowed to penetrate into the resultant preform at 700-1000 deg.C.
|
