Hitachi Metals, Ltd.

Sumitomo Chemical Company, Limited

Satake Corporation

Sciocs Company Limited

Japan Rice Millers Association

Michiko Matsuda

Hajime Fujikura

Taichiroo Konno

Takeshi Shimada

Hiroyuki Maehara

Takeshi Fukumori

Nobuhiro Matsumoto

Shigeharu Kanemoto

Kazuo Amano

Nan Wang

Yoshihiro Kamitani

Takamasa Mesaki

Yuka Kuribayashi

A thermoelectric conversion material includes a sintered body including a main phase including a plurality of crystal grains including Ce, Mn, Fe, and Sb and forming a skutterudite structure, and a grain boundary between crystal grains adjacent to each other. The grain boundary includes a sintering aid phase including at least Mn, Sb, and O. Thus, with respect to a skutterudite-type thermoelectric conversion material including Sb, which is a sintering-resistant material, it is possible to improve sinterability while maintaining a practical dimensionless figure-of-merit ZT, and to reduce processing cost.

Thermoelectric conversion material, thermoelectric conversion module using same, and method of manufacturing thermoelectric conversion material

A thermoelectric conversion material having a high dimensionless figure of merit ZT includes: a large number of polycrystalline grains which include a skutterudite-type crystal structure containing Yb, Co, and Sb; and an intergranular layer which is between the neighboring polycrystalline grains and includes crystals in which an atomic ratio of O to Yb is more than 0.4 and less than 1.5. A method for manufacturing a thermoelectric conversion material includes: a weighing step; a mixing step; a ribbon preparation step by rapidly cooling and solidifying a melt of the raw materials by using a rapid liquid cooling solidifying method; a first heat treatment step including heat treating in an inert atmosphere with an adjusted oxygen concentration; a second heat treatment step including heat treating in a reducing atmosphere; and manufacturing the thermoelectric conversion material by a pressure sintering step in an inert atmosphere.

Thermoelectric conversion material, thermoelectric conversion module, and method for manufacturing thermoelectric conversion material

A nitride semiconductor template includes a substrate, and a chlorine-containing nitride semiconductor layer. The chlorine-containing nitride semiconductor layer contains an iron concentration of not higher than 1&#xd7;10cm.

Metal chloride gas generator, hydride vapor phase epitaxy growth apparatus, and nitride semiconductor template

There is provided a nitride semiconductor epitaxial substrate having a group III nitride semiconductor layer with C-plane as a surface, grown on a substrate via a buffer layer of the group III nitride semiconductor containing Al, wherein the buffer layer has an inversion domain on the surface.

Nitride semiconductor epitaxial substrate and nitride semiconductor device

A metal chloride gas generator includes: a tube reactor including a receiving section for receiving a metal on an upstream side, and a growing section in which a growth substrate is placed on a downstream side; a gas inlet pipe arranged to extend from an upstream end with a gas inlet via the receiving section to the growing section, for introducing a gas from the upstream end to supply the gas to the receiving section, and supplying a metal chloride gas produced by a reaction between the gas and the metal in the receiving section to the growing section; and a heat shield plate placed in the reactor to thermally shield the upstream end from the growing section. The gas inlet pipe is bent between the upstream end and the heat shield plate.

Method of manufacturing a nitride semiconductor epitaxial substrate

A quality evaluation method and apparatus for non-bran rice evaluate quality or taste of non-bran rice by identifying proportions of a hull layer, an aleurone layer, an endosperm layer, which adhere to a surface of the non-bran rice according to luminance levels of self-emitted fluorescence obtained by irradiating the non-bran rice with excitation light.

Quality evaluation method and apparatus for non-bran rice

Growing community of inventors

Arakawa-ku, Japan

Michiko Matsuda