Akebono Brake Industry Co., Ltd.

Akebono Research and Developement Centre Ltd.

Hidekazu Narita

Takashi Sato

Yutaka Nishikawa

Hiroshi Idei

Tsukasa Baba

Shigeyoshi Kobayashi

Takuya Tokiyama

Zhang Yi Can

Takao Horiya

Junichiro Mizusaki

Hiroaki Tagawa

Masakazu Kitahara

Hidenori Takeuchi

A process for producing spheroidal graphite cast iron includes a spheroidization treatment, an inoculant treatment and a pouring inoculation treatment. A molten iron is subjected to the spheroidization treatment using a spheroidizing agent of an Fe&#x2014;Si&#x2014;Mg&#x2014;Ca-based alloy which contains a given amount of Ba and contains substantially no rare-earth element.

Process for producing spheroidal-graphite cast iron, and spheroidal-graphite cast iron member obtained from said spheroidal-graphite cast iron

A CO.sub.2 gas sensor using a solid reference electrode in combination with a lithium ion conductive solid electrolyte which is at dissociative equilibrium with CO.sub.2 gas, characterized in that the solid reference electrode is made of a lithium containing, mixed transition metal oxide conductor which is of the same conduction type as the solid electrolyte. Further, the solid electrolyte comprises a complex carbonate containing LiAlO.sub.2 as an aggregate. Furthermore, a mixed electrode is used for the solid-electrolyte type gas sensor, which is prepared by the steps of: mixing a Au powder or paste with a powder of an oxide excluding Al.sub.2 O.sub.3 ; rendering a resultant mixture to a paste; applying the paste onto a solid electrolyte; and sintering the applied paste.

Solid electrolyte type gas sensor

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Kuki, Japan

Hidekazu Narita