STUDY OF THE PROPERTIES OF DEPOSITING LAYER ON THE SURFACE OF CERAMIC PARTICLES

The technology of chemical vapor deposition has been used for the depositing layer treatment on the surface of alumina particle, and their properties were also studied, including the oxidation resistant under high temp., the adhesion strength of depositing film, and the influence on the interface adhesion strength between particles and metal matrix. The results show that the interface wettability has been increased and the interface construction has been improved because of the Ni depositing layer oxided; the adhesion strength of depositing film is high; the interface adhesion strength between alumina particles and metal matrix is remarkably increased, 6 times higher than that of undepositing's, and interface of the composite is crackless.