Sumitomo Metal Industries, Inc.

Shinya Hikino

Masanari Kimoto

Kunihiro Fukui

Tetsuaki Tsuda

Kiyoyuki Fukui

Hirohisa Seto

Junichi Uchida

Tsutomu Yoshida

Yasushi Hosoda

Yasuhiro Yamamoto

A zinc or zinc alloy electroplated metal sheet comprises a metal sheet having, on at least one surface thereof, a composite zinc or zinc alloy plated coating formed by electroplating with zinc or a zinc alloy in a plating solution which contains at least one organic compound selected from the group consisting of alkynes, alkynols, amines and salts thereof, thio compounds, heterocyclic compounds, and aromatic carboxylic acids and salts thereof. The composite plated coating has a coating weight of 0.5-200 g/m.sup.2 and contains 0.001-10 wt % of co-deposited carbon. The electroplated metal sheet has improved post-painting corrosion resistance, press formability, and spot weldability.

Composite zinc- or zinc alloy-electroplated metal sheet and method for

A material for producing far-infrared radiation is disclosed. The material comprises a substrate and an Al--Mn alloy-derived oxide surface layer on the substrate, the oxide surface layer being porous with an average pore diameter of 0.01-2.0 micrometers and a porosity of 10.sup.3 -10.sup.12 pores/cm.sup.2, the weight ratio of Mn/Al of the oxide surface layer being 0.001-2.0, and the thickness of the oxide surface layer being 0.1-100 micrometers.

Excellent far-infrared radiating material

Growing community of inventors

Amagasaki, Japan

Shinya Hikino