Sumitomo Electric Industries, Limited

Toshihiro Sakamoto

Akihito Fujii

Kenichiro Shibata

Masatoshi Majima

Shinji Inazawa

Toru Maeda

Hideki Kashihara

Naoto Igarashi

Jun Yorita

Tomoyuki Ishimine

Hideaki Toshioka

A soft magnetic material, a dust core, a method for manufacturing the soft magnetic material, and a method for manufacturing the dust core that can improve DC bias characteristics are provided. A soft magnetic material includes a plurality of metal magnetic particleswhose coefficient of variation Cv (&#x3c3;/&#x3bc;), which is a ratio of a standard deviation (&#x3c3;) of a particle size of the metal magnetic particlesto an average particle size (&#x3bc;) thereof, is 0.40 or less and whose circularity Sf is 0.80 or more and 1 or less. The metal magnetic particlespreferably have an average particle size of 1 &#x3bc;m or more and 70 &#x3bc;m or less. The soft magnetic material preferably further includes an insulating coated film that surrounds a surface of each of the metal magnetic particles

Soft magnetic material, dust core, method for manufacturing soft magnetic material, and method for manufacturing dust core

A method of producing a fine metal component where a plated coating is deposited on a conductive film exposed at fine through-hole pattern portions in a mold to produce a fine metal component, wherein the conductive film is made using a conductive paste comprised of a metal powder in which the metal particles are magnetically linked together in a chain shape.

Plating and production methods for producing a fine metal component using a conductive paste

The present invention provides a method of producing an infrared ray transmitting material, a large-sized one which can be manufactured at a low price, consisting of a polycrystal not liable to cleavage, which makes only a slight absorption of infrared rays all over the region of 8-11 .mu.m wave lengths, thus being highly transmissive. The material is a polycrystalline barium fluoride sintered body excellent in transmission to infrared region of 8-11 .mu.m wave lengths, one that is most excellent in the infrared transmission and being produced by a method of hot press sintering and an HIP treatment in combination, one that gives somewhat inferior transmission but which is low-priced produced by a method of CIP molding and normal pressure sintering in combination, and one that is regarded as an intermediate between the aforementioned two by a method comprising the CIP molding, normal-pressure sintering and the HIP treatment in combination, in all cases entirely without the addition of any binder or sintering aid.

Method of producing an infrared transmitting barium fluoride sintered

The present invention provides an infrared ray transmitting material, even large-sized one being manufacturable at a low price, consisting of a polycrystal not liable to cleavage, which makes only a slight absorption of infrared rays all over the region of 8-11 .mu.m wave lengths, thus being highly transmissive. The material is a polycrystalline barium fluoride sintered body excellent in transmission to infrared region of 8-11 .mu.m wave lengths, one that is most excellent in the infrared transmission being produced by a method comprising the hot press sintering and the HIP treatment in combination, one that gives somewhat inferior transmission but which is low-priced by a method comprising the CIP molding and the normal pressure sintering in combination, and one that regarded as intermediate between the aforementioned two by a method comprising the CIP molding, normal-pressure sintering and the HIP treatment in combination, in all cases entirely without addition of any binder or sintering aid.

Infrared transmitting barium fluoride sintered body

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Itami, Japan

Toshihiro Sakamoto