专利名称：Silicon nitride sintered product发明人：Urashima, Kazuhiro NGK Spark Plug Co.,
Ltd.,Watanabe, Masakazu NGK Spark PlugCo., Ltd.,Tajima, Yo NGK Spark Plug Co.,Ltd.,Nakanishi, Kenji NGK Spark Plug Co., Ltd.
申请号：EP88114207.9申请日：19880831公开号：EP0306001A2公开日：19890308
摘要：A silicon nitride sintered product comprises, in % by weight, 1 to 10% Mg,calculated as MgO, 1 to 10% Zr, calculated as ZrO₂, 0.1 to 2.0% of at least one of Aℓ,calculated as Aℓ₂O₃, Li, calculated as Li₂O, and Na, calculated as Na O, and the remainderbeing Si₃N₄ and unavoidable impurities.
申请人：NGK Spark Plug Co. Ltd.
地址：No. 14-18, Takatsuji-cho Mizuho-ku Nagoya-shi Aichi-ken 467 JP
国籍：JP
代理机构：Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät
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