Daiichi Kigenso Kagaku Kogyo Co., Ltd.

Denso Corporation

Takuji Nabeta

Namitsugu Fujii

Sadahiro Yagishita

Taichi Kunisada

Keita Kanenishi

Ryo Nishizawa

In order to provide a zirconium boride that provides high caloric value at the time of its combustion with a compound having radicals such as perchlorate and can combust in a short period of time, while providing high physical stability, an amount of radical derived from lattice defect detected by ESR spectroscopy, is set to 0.1&#xd7;10spin/mg or more.

Zirconium boride and method of its manufacture

Disclosed is a spinel powder obtained by mixing a magnesia raw-material with an electrically fused alumina, followed by firing of the mixture. The particles of the spinel powder are coated with granular spinel particles. Therefore, there are provided a spinel powder and a simple method for producing the same, which is superior in thermal spraying property and has a unique particle shape. In particular, there is provided a method for producing a spinel powder which contributes to a reduction in the variation of characteristics of sensors, for example, as a thermal spraying powder for forming a protective coating of a gas sensor element.

Spinel powder and manufacturing process therefor, and processes for producing thermal spraying film and gas sensor elements

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Osaka, Japan

Takuji Nabeta