Yoshida Kogyo K.k.

Tsuyoshi Masumoto

Akihisa Inoue

Junichi Nagahora

Kazuo Aikawa

Katsumasa Ohtera

Madoka Nakajima

Keiko Yamagata

Hideki Takeda

Disclosed is a corrosion resistant aluminum-based alloy which is composed of a compound having a composition consisting of the general formula: Al.sub.a M.sub.b Mo.sub.c X.sub.d Cr.sub.e wherein: M is one or more metal elements selected from the group consisting of Ni, Fe, Co, Ti, V, Mn, Cu and Ta; X is Zr or a combination of Zr and Hf; and a, b, c, d and e are, in atomic percentages; 50%.ltoreq.a.ltoreq.89%, 1%.ltoreq.b.ltoreq.25%, 2%.ltoreq.c.ltoreq.15%, 4%.ltoreq.d.ltoreq.20% and 4%.ltoreq.e.ltoreq.20%, the compound being at least 50% by volume composed of an amorphous phase. The Al-based alloy exhibits a very high corrosion resistance in severe corrosive environments, such as hydrochloric acid solution or sodium hydroxide solution, due to the formation of a highly passivative protective film. Therefore, the alloy exhibits a good durability in long services under such severe corrosive environments.

Corrosion resistant aluminum-based alloy

The present invention provides a corrosion resistant aluminum-based alloy consisting of a compound which has a composition represented by the general formula:

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Tateyama, Japan

Keiko Yamagata