Sumitomo Chemical Company, Limited

Hideo Maeda

Hidekimi Kadokura

Ken-ichi Nishio

A process for the purification of a raw gallium material to produce a purified gallium material having a higher purity than that of the raw gallium material having steps of: maintaining the raw gallium material in its melted condition within a vessel having a means, for example a tube, positioned at or near a center portion of an inside of the vessel, through which means a cooling medium is passed, and keeping the raw gallium material in the vessel at a controlled temperature so that the purified gallium material is deposited on an outer surface of the means.

Process for purification of gallium material

Improved fiber-reinforced metallic composite material comprises as a matrix a metal alloy having a lower melting point than magnesium and being chemically inactive (e.g. zinc, cadmium, indium, tin, thallium, lead, bismuth and polonium) or and as a reinforcement inorganic fibers of 15 to 70% by volume, in which the metal alloy composing the matrix contains 0.01 to 10% by weight of one or more metals of group IA or group IIA (except beryllium) in the periodic table (e.g. lithium, sodium, potassium, rubidium, cesium, francium, magnesium, calcium, strontium, barium and radium). The composite material has improved mechanical strength, and is useful as a material for various parts and apparatuses in various industrial fields such as aerospace, atomic power and automobile industries.

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Eihame, Japan

Hideo Maeda