Kyocera Corporation

Masahide Akiyama

Yoshitake Terashi

Shoji Yamashita

Takeshi Ohkuma

Hiroshi Ono

Takashi Shigehisa

Shuji Nakazawa

Takuya Gentsu

Yucong Wang

Takahiko Makino

Toshiyuki Sue

Masato Nishihara

Hitoshi Matsunosako

Kohei Ono

A light absorbing member includes a ceramic composite having a plurality of first ceramic particles exhibiting positive resistance temperature characteristics in a first ceramics having an open porosity of 5% or lower.

Light absorbing member, member for hydrogen production, and hydrogen production apparatus

A base is metal, ceramic, or a complex combining thereof, and has thereon multiple concave-convex patterns that are provided at one or more pitches equal to or less than 2 &#x3bc;m, and a surface partof the baseis porous.

Thermophoto conversion element

A member for hydrogen production includes a ceramic composite in which a plurality of ceramic particles having an average particle diameter ranging from 5 nm to 200 nm are dispersed in a porous insulator having a different component from the ceramic particles. The ceramic particles comprise at least one substance selected from the group consisting of AXO(where 0&#x2264;&#x3b4;&#x2264;1, A: at least one of rare earth elements, alkaline earth elements, and alkali metal elements, X: at least one of transition metal elements and metalloid elements, and O: oxygen), cerium oxide, and zirconium oxide as a main component.

Member for hydrogen production and hydrogen production apparatus

[Object] To efficiently recover tungsten from an object containing tungsten by a simple treatment process using a microorganism with reduced environmental load. [Solution] A method for recovering a tungsten compound is provided which includes the step of preparing a tungsten compound solution in which tungsten-containing polyatomic ions are dissolved, by eluting the metal component of an object containing tungsten into an alkaline solution; the adsorption step of adsorbing the tungsten-containing polyatomic ions to a microorganism by introducing the microorganism to the tungsten compound solution and adjusting the tungsten compound solution to an acidic level; and the collecting and washing step of collecting the microorganism to which the tungsten-containing polyatomic ions are adsorbed and washing the microorganism.

Method for recovering tungsten compound

A ceramic sintered body contains AlOcrystal grains, internal TiC crystal grains existing in the AlOcrystal grains and external TiC crystal grains other than the internal TiC crystal grains. The AlOcrystal grains and the external TiC crystal grains retain stress caused by the difference in thermal expansion coefficient remaining after sintering, so that the AlOcrystal grains and the external TiC crystal grains pull each other in the interface therebetween. As a result, when the ceramic sintered body is machined, micro-cracks generated in the interface can easily grow due to the residual stress in addition to the shearing force caused by the machining operation, so that machinability is improved.

Ceramic sinter, magnetic head substrate using the same, magnetic head and recording medium drive unit

An oxygen sensor device consisting a cylindrical tube of a ceramic solid electrolyte having an oxygen ion conducting property, a reference electrode formed on an inner surface of the cylindrical tube, and a measuring electrode formed on an outer surface of the cylindrical tube at a position at least opposed to the reference electrode, wherein a ceramic layer is formed on the outer surface of the cylindrical tube, the ceramic layer having an opening portion for exposing the surface of the measuring electrode and incorporating a heat-generating member therein, the heat-generating member being buried surrounding the opening portion. The oxygen sensor device as a whole has a cylindrical shape relaxing the concentration of thermal stress and exhibiting excellent thermal shock resistance. With the heat-generating member being buried near the sensing portion, the sensing portion is heated up to a predetermined activating temperature within short periods of time exhibiting an excellent sensor response.

Oxygen sensor device incorporating a heater therein

Electrically conducting ceramics having, as a chief crystalline phase, a perovskite crystalline phase containing La, Cr and Mg and further having, in addition to the chief crystalline phase, an oxide phase containing La, wherein when the atomic ratios among the rare earth element, Mg and Cr in said chief crystalline phase are represented by the following formula,

Electrically conducting ceramics, process for producing the same and

The present invention is an electrically conducting ceramic having improved electrical conductivity which comprises a perovskite-type composite oxide of a composition represented by the following formula

Growing community of inventors

Kirishima, Japan

Masahide Akiyama