ALUMINIUM NITRIDE SINTERED BODY FORMED WITH METALLIZED LAYER AND METHOD OF MANUFACTURING THE SAME

摘要

A metallized layer comprising:- tungsten and/or molybdenum; at least one of nitride, oxynitride, oxide of aluminium; and calcium oxide; is formed on the surface of a sintered aluminium nitridebody. Preferably the layer contains 40% to 98% by weight of metal, 1% to 25% by weight of the aluminium compound and 1% to 35% by weight of calcium oxide. The method comprises coating a pre-fired aluminium nitride body with a metallizing paste of teh above composition and firing in an inert atmosphere.