Nippon Mining & Metals Co., Ltd.

Nippon Mining Co., Ltd.

Japan Energy Corporation

Eiji Nishimura

Hiroshi Tasaki

Yasunori Yamamoto

Chikara Tominaga

Yusaku Masuda

Masami Kuroki

Naoyuki Kikutake

Yuuichiro Shindou

A Zn--Ni alloy having a high Ni content is used for supplying Ni.sup.2+ and Zn.sup.2+ ions into an acidic plating bath and for supplying Ni and Zn into a hot dip galvanizing bath. This alloy is characterized by being produced by using a flux consisting of a fused-salt former, which forms a salt having a melting temperature of 700.degree. C. or less, and Na.sub.2 B.sub.4 O.sub.7 and occasionaly additionally Na.sub.2 CO.sub.3. By using the inventive alloy, the bath can be quickly prepared, and Zn and Ni can be supplied to the bath without leaving the undissolved residue.

Method for producing a ZN-Ni alloy by melting in the presence of a flux

A Zn-Ni alloy having a high Ni content is used for supplying Ni.sup.2+ and Zn.sup.2+ ions into an acidic plating bath and for supplying Ni and Zn into a hot dip galvanizing bath. This alloy is characterized by being produced by using a flux consisting of a fused-salt former, which forms a salt having a melting temperature of 700.degree. C. or less, and Na.sub.2 B.sub.4 O.sub.7 and occasionaly additionally Na.sub.2 CO.sub.3. By using the inventive alloy, the bath can be quickly prepared, and Zn and Ni can be supplied to the bath without leaving the undissolved residue.

Method for preparation for a Zn-Ni electroplating or hot-dip galvanizing

A method for producing a brown coated article, wherein an iron substrate is dipped at a temperature of from 430.degree. to 600.degree. C. in a molten Zn plating bath containing from 0.05 to 1% by weight of Mn, so as to zinc hot-dip galvanize the same, a heat treatment is carried out to convert the Zn-Mn phase formed by the zinc hot-dip galvanizing to a Zn-Mn-Fe phase, and subsequently the zinc hot-dip galvanizing layer is brought into contact with an acidic aqueous solution containing an oxidizing agent.

Method for producing a color-coated article

A sputtering target for forming a thin film consisting of high-purity titanium, in which the content of alkali metal is 0.1 ppm or less, the content of radio active elements is 1 ppb or less, and the oxygen content is 100 ppm or less, and, further, the balance of the elements is Ti, is produced by a fused salt electrolysis, in which the members of the electrolytic cell being in contact with the fused salt consist of Ni.

Method and apparatus for producing a high-purity titanium

Method for preparation of a Zn-Ni electroplating or hot-dip galvanizing

A brown coated article which exhibits stable color is provided by the composition and structure of a zinc hot-dip galvanizing layer. The zinc hot-dip galvanizing layer consists essentially of from 1 to 15% by weight of Fe and from 0.05 to 1% by weight of Mn, and balance of Zn. A brown Zn-Mn-Fe oxide layer is present on the surface of the zinc hot-dip galvanizing layer.

Color-coated article and method for producing the same

Zinc powder, which contains a coloring element, e.g., Ti, Mn, or V, is heated to a temperature of from 350.degree. to 700.degree. C. so as to oxidize the surface of the powder and hence to develop such colors as brown, navy blue, blue, greenish-brown, green, and coffee brown. The colored zinc powder is sprayed onto a steel, aluminum, or ceramic article to produce a colored article. The colored zinc powder is also used as a pigment.

Colored zinc powder, its method of production and method for producing

There is provided a high-strength, easily-castable zinc alloy consisting substantially of, by weight, from 1 to 30 percent aluminum, from 1 to 20 percent copper, from 0.01 to 1 percent titanium, from 0.01 to 1 percent zirconium, and the balance zinc, and also is provided a high-strength, easily-castable zinc alloy further including from 0.01 to 0.1 percent magnesium. These alloys are useful in the manufacture of molds for injection molding of plastics or also useful as die casting products.

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Saitama, Japan

Eiji Nishimura