Agency of Industrial Science and Technology Ministry of International

Nichirei Foods Inc.

Norimitsu Murayama

Shuji Sakaguchi

Sakae Tsuda

Yasuharu Kodama

Takeshi Koizumi

Manabu Fukushima

Yuichi Yoshizawa

Toshifumi Inoue

Provided is a method for producing a porous material, wherein porosity can be controlled to 50% or higher by means of a freezing method, pore size can be controlled to 10 &#x3bc;m to 300 &#x3bc;m, and pore diameter distribution is uniform. The method is a method for producing a porous material, comprising freezing a mixture of water and a raw material comprising at least any of a ceramic material, a resin, a metal, and precursors thereof from a specific portion of the mixture to use ice crystals produced at the time as a pore source and then heat-treating a dry material obtained by removing the ice from the frozen material, wherein the mixture of a raw material and water or the frozen material comprises an antifreeze protein.

Method for producing porous material using antifreeze protein

A joint sintered high-temperature superconductive ceramic article is obtained by joining two sintered high-temperature superconductive ceramic masses formed of oriented crystal grains in such a manner that the directions of grain-orientation are different across the interface of union and pressing the joined ceramic masses against each other perpendicularly to the interface of union and, at the same time, heating them.

Method for production of joint sintered article of high-temperature

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Nagoya, Japan

Norimitsu Murayama