Mitsubishi Materials Corporation

Hitachi Metals Mmc Superalloy, Ltd.

Katsuo Sugahara

Saburo Wakita

Masahiro Wada

Takeshi Isobe

Takuya Murai

Tsutomu Takahashi

Hideo Kitamura

Yoshio Takizawa

Koji Toyokura

Kouichi Kita

A Ni-based alloy having excellent hot forgeability and corrosion resistance includes, by mass %, Cr: more than 18% to less than 21%, Mo: more than 18% to less than 21%, Ta: 1.1% to 2.5%, Mg: 0.001% to 0.05%, N: 0.001% to 0.04%, Mn: 0.001% to 0.5%, Si: 0.001% to 0.05%, Fe: 0.01% to 1%, Co: 0.01% or more and less than 1%, Al: 0.01% to 0.5%, Ti: 0.01% or more and less than 0.1%, V: 0.005% or more and less than 0.1%, Nb: 0.001% or more and less than 0.1%, B: 0.0001% to 0.01%, Zr: 0.001% to 0.05%, and a balance consisting of Ni and unavoidable impurities.

Ni-based alloy having excellent hot forgeability and corrosion resistance, and large structural member

A Ni based alloy with a composition including Cr: from more than 43% to 50% or less, Mo: 0.1% to 2%, Mg: 0.001% to 0.05%, N: 0.001% to 0.04%, Mn: 0.05% to 0.5%, and where necessary also including either one, or both, of Fe: 0.05% to 1.0% and Si: 0.01% to 0.1%, and the remainder as Ni and unavoidable impurities, in which the quantity of C amongst the unavoidable impurities is restricted to 0.05% or less. It has excellent corrosion resistance relative to supercritical water environments containing inorganic acids. Also provided is a member for a supercritical water process reaction apparatus comprises the Ni based alloy.

Ni based alloy with excellent corrosion resistance to supercritical water environments containing inorganic acids

The invention relates to a Ni alloy anode material for Ni electroplating, which exhibits high plating yield. The Ni alloy anode material comprises a Ni alloy consisting essentially of high-purity Ni having purity of 99.99 mass % or higher and, as an alloy component, Si and Al in the following contents: Si: 30 to 300 ppm, and Al: 30 to 300 ppm.

Ni alloy anode material for Ni electroplating

A Ni based hydrogen occluding alloy having the composition, comprising: by weight:

Hydrogen occluding alloy

A nickel-based alloy which is excellent not only in anti-corrosion properties but also in workability is disclosed. The alloy contains 15 to 35 weight % of chromium; 6 to 24 weight % of molybdenum; wherein the sum of chromium plus molybdenum is no greater than 43 weight %; 1.1 to 8 weight % of tantalum; and balance nickel and unavoidable impurities. The alloy may optionally include no greater than 0.1 weight % of nitrogen; no greater than 0.3 weight % of magnesium, no greater than 3 weight % of manganese, no greater than 0.3 weight % of silicon, no greater than 0.1 weight % of carbon, no greater than 6 weight % of iron, no greater than 0.1 weight % of zirconium, no greater than 0.01 weight % of calcium, no greater than 1 weight % of niobium, no greater than 4 weight % of tungsten, no greater than 4 weight % of copper, no greater than 0.8 weight % of titanium, no greater than 0.8 weight % of aluminum, no greater than 5 weight % of cobalt, no greater than 0.5 weight % of vanadium, no greater than 2 weight % of hafnium, no greater than 3 weight % of rhenium, no greater than 1 weight % of osmium, no greater than 1 weight % of platinum, no greater than 1 weight % of ruthenium, no greater than 1 weight % of palladium, no greater than 0.1 weight % of lanthanum, no greater than 0.1 weight % of cerium, or no greater than 0.1 weight % of yttrium.

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Saitama, Japan

Katsuo Sugahara