STUDY OF THE TECHNOLOGICAL PROCESS FORMANUFACTURING Al₂O₃+Ni COMPOSITE WITH AN INTERLAYER

In order to manufacture Al₂O₃+Ni composite, Al₂O₃ particles were first coated with TiN by CVD. The homogeneity of the coating layer was characterized by SEM and EDX. The Ti content of the coated powder was analyzed by X ray fluorescence spectrometry. The composite was produced by hot pressing. The densification and mechanical properties of the composite are improved remarkably by applying TiN interlayer. The higher the hot pressing temperature, the more pronounced the favourable effect will be. One reason for these experimental results is that the wettability between TiN and Ni is better than that between Al₂O₃ and Ni.