RU93009440A - METHOD OF OBTAINING ALUMINID TRANSITION METALS - Google Patents

Claims (1)

The method relates to powder metallurgy, in particular to methods for producing intermetallic composite materials. The method includes the preparation of an exothermic mixture of powders of the transition metal and aluminum, self-propagating high-temperature synthesis and hot deformation of the synthesis products. Essence of the method: at least one reinforcer selected from the group of carbides, oxides, borides, nitrides is additionally introduced into the exothermic mixture, and the mixture itself is prepared from aluminum and bulk-doped composite powder containing 2-30% by volume of the reinforcer and the rest is transitional metal. The body-doped composite powder is proposed to be made by rolling or mechanically mixing a mixture of transition metal powders and a hardener in a high-energy mill, or spraying a liquid melt consisting of a transition metal and a hardener, or by joint deposition from solutions (melts) of salts or organometallic transition metal compounds and the hardener. The proposed method allows to obtain aluminides of transition metals with a uniform distribution of the hardener throughout their volume, which in turn leads to an increase in mechanical properties, such as heat resistance of the obtained alloys.