Nippon Electric Glass Co., Ltd.

Masayuki Hirose

Yoshikatsu Nishikawa

Takuji Oka

A composite ceramic powder of the present invention includes: a LAS-based ceramic powder having precipitated therein &#x3b2;-eucryptite or a &#x3b2;-quartz solid solution as a main crystal; and TiOpowder and/or ZrOpowder.

Composite ceramic powder, sealing material, and composite ceramic powder production method

The present invention provides a ceramic powder, in which &#x3b2;-eucryptite or a &#x3b2;-quartz solid solution is precipitated as a main crystal phase, and which includes TiOand/or ZrO.

Ceramic powder and method for producing same

Provided is a ceramic powder having precipitated therein &#x3b2;-eucryptite or a &#x3b2;-quartz solid solution as a main crystal phase, having an average particle diameter Dof 20 &#x3bc;m or less, and having a negative thermal expansion coefficient in a range of from 30&#xb0; C. to 300&#xb0; C.

Ceramic powder, composite powder material, and sealing material

A glass for sealing of the present invention includes as a glass composition, in terms of mol %, 60% to 80% of SiO, 8% to 5.8% of BO, 12% to 18.7% or LiO+NaO+KO, and 2% to 12% of MgO+CaO+SrO+BaO, and has a molar ratio SiO/BOof 14 or more.

Sealing glass

A sealing material of the present invention is a sealing material for sealing a metal material, including 70 mass % to 100 mass % of glass powder including alkali silicate glass and 0 mass % to 30 mass % of ceramic powder, and having a linear thermal expansion coefficient in a temperature range of from 30&#xb0; C. to 380&#xb0; C. of more than 100&#xd7;10/&#xb0; C. and 170&#xd7;10/&#xb0; C. or less.

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Shiga, Japan

Masayuki Hirose