Fujikura Limited

The Fujikura Cable Works Limited

Sky Aluminium Co., Ltd.

Sony Corporation and Fujikura Ltd.

Koichi Saruwatari

Masatsugu Maejima

Shinichi Watanabe

Mamoru Matsuo

Akihito Kurosaka

Hiroyuki Sogawa

Masana Ugaji

Kazuo Isawa

Toshiki Muramatsu

Nobuo Fuke

Hirata Masanori

Ito Hiroshi

Hiroyoshi Gunji

Maejima Masatsugu

Teramoto Keigo

The present invention discloses a far infrared radiator used in various types of heating equipment. This far infrared radiator is comprised of a base materialcomposed of aluminum or aluminum alloy, and an electrolytic colored filmformed on this base material. Fine irregularities are formed in the surface of the electrolytic colored film, and nickel or cobalt is heterogeneously deposited from the bottoms to the openings in micropores of this film Electrolytic colored filmis obtained by performing electrolysis treatment in a nickel bath or cobalt bath using an alumite film, formed on the surface of base materialhaving fine irregularities, as the cathode.

Far-infrared radiator and method for producing method

An infrared radiation element and a process for producing the same. An aluminum alloy material consists essentially of 0.3 to 4.3 weight % of Mn, balance Al, and impurities. The alluminum alloy material is heated for dispersing a precipitate of an Al--Mn intermetallic compound at a density of at a minimum 1.times.10.sup.5 /mm.sup.3 for a size of 0.1 .mu.m to 3 .mu.m. The heated aluminum alloy material is anodized to form an anodic oxide layer thereon.

Infrared radiation element and process of producing the same

A diaphragm using a metal material applied with anodic oxide films, in which said metal material contains one of lead compounds, inorganic metal compounds and phosphor compounds at least to a portion in the micropores of the anodic oxide film.

Diaphragm

A method of the surface treatment of a porous material which comprises the step of electrolyzing the porous material in an electrolytic bath composed of an aqueous solution of at least one salt selected from the group consisting of alkali metal thiotungstate, alkali metal thioantimonate, alkali metal thiostannate, alkali metal thiocuprate, alkali metal thioarsenate, alkali metal thioaurate, alkali metal thioplatinate, alkali metal thioniobate, alkali metal thiovanadate, alkaline earth metal thiotungstate, alkaline earth metal thioantimonate, alkaline earth metal thiostannate, alkaline earth metal thiocuprate, alkaline earth metal thioarsenate, alkaline earth metal thioaurate, alkaline earth metal thioplatinate, alkaline earth metal thioniobate, alkaline earth metal thiovanadate, ammonium thiotungstate, ammonium thioantimonate, ammonium thiostannate, ammonium thiocuprate, ammonium thioarsenate, ammonium thioaurate, ammonium thioplatinate, ammonium thioniobate and ammonium thiovanadate, to thereby impregnate the porous material with the metallic sulfide. Optionally, the porous material may be immersed alternately in an aqueous solution prepared as described above for the electrolytic bath and an acid aqueous solution after the electrolysis to further impregnate the porous material with the metallic sulfide.

Method of surface treatment of porous material

Growing community of inventors

Musashino, Japan

Koichi Saruwatari