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11. 发明授权

US4820668A Process for preparing powdered ceramic raw materials of complex oxide 失效
标题翻译：复合氧化物粉末陶瓷原料的制备方法
公开(公告)号：US4820668A
公开(公告)日：1989-04-11
申请号：US852612
申请日：1986-04-16
申请人： Yoshiharu Kato , Shinsei Okabe , Shozo Kojima , Yasunobu Yoneda
发明人： Yoshiharu Kato , Shinsei Okabe , Shozo Kojima , Yasunobu Yoneda
IPC分类号： C01B13/36 , C01G29/00 , C04B35/465 , C04B35/468 , C04B35/46
CPC分类号： C01B13/363 , C04B35/465 , C04B35/4684
摘要： A process for preparing a powdered ceramic raw material, comprising the steps of; (a) adding gaseous carbon dioxide or a precipitant composed of a water-soluble carbonate to the first aqueous solution containing at least one nitrate or chloride of elements selected from the group consisting of Ba, Sr, Ca and Mg until the pH of the solution is reached to a predetermined value within the range of 7 to 10 to precipitate at least one carbonate of said elements, (b) adding ammonia gas or a precipitant composed of an aqueous solution of a water-soluble hydroxide to the second aqueous solution of at least one nitrate or choride of elements selected from the group consisting of Ti, Zr and Sn until the pH of the solution is reached to a predetermined value within the range of 7 to 10 to precipitate at least one hydroxide of said elements, (c) adding ammonia gas or a precipitant composed of an aqueous solution of a water-soluble hydroxide to the third aqueous solution of lead acetate or lead nitrate until the pH of the solution is reached to a predetermined value within the range of 7 to 10 to precipitate lead hydroxide, (d) mixing the carbonate precipitated from the first aqueous solution, the hydroxide precipitated from the second solution, and hydroxide precipitated from the third aqueous solution; and (e) treating the resultant mixture with heat to form complex oxides of said elements.
摘要翻译：一种制备粉末状陶瓷原料的方法，包括以下步骤：（a）将含有水溶性碳酸盐的气态二氧化碳或沉淀剂添加到含有选自Ba，Sr，Ca和Mg的元素中的至少一种硝酸盐或氯化物的第一水溶液中，直到溶液的pH 达到预定值在7至10的范围内以沉淀至少一种所述元素的碳酸盐，（b）将氨气或由水溶性氢氧化物的水溶液组成的沉淀剂加入到第二水溶液中至少一种选自Ti，Zr和Sn的元素的硝酸盐或氯化物，直到溶液的pH达到7至10范围内的预定值，以沉淀至少一种所述元素的氢氧化物，（c）将氨气或由水溶性氢氧化物的水溶液组成的沉淀剂加入到乙酸铅或硝酸铅的第三水溶液中直到溶液的pH达到预定值 7至10的沉淀以沉淀氢氧化铅，（d）将从第一水溶液沉淀的碳酸盐，从第二溶液沉淀的氢氧化物和从第三水溶液沉淀的氢氧化物混合; 和（e）用热处理所得混合物以形成所述元素的复合氧化物。

12. 发明授权

US4442422A Humidity sensitive resistor 失效
标题翻译：湿敏电阻
公开(公告)号：US4442422A
公开(公告)日：1984-04-10
申请号：US477408
申请日：1983-03-21
申请人： Michihiro Murata , Shoichi Kitao , Shinsei Okabe
发明人： Michihiro Murata , Shoichi Kitao , Shinsei Okabe
IPC分类号： G01N27/12 , H01L7/00
CPC分类号： G01N27/121
摘要： A humidity sensitive resistor, comprising a pair of detecting electrodes (2) and (3) formed on an insulating substrate (1), and a humidity sensitive film (4) formed to coat on this detecting electrodes, the humidity sensitive film (4) being made of an integrated structure of a first layer macromolecular resin film (5) containing a polyvinyl alcohol polymer and an electrolyte and a second layer of hygroscopic macromolecular resin film (6) covering on the surface of the first layer, and humidity being detected with the aid of a change of the resistance value of this humidity sensitive film (4).
摘要翻译：一种湿敏电阻器，包括形成在绝缘基板（1）上的一对检测电极（2）和（3）以及形成在该检测电极上的湿敏膜（4），湿敏膜（4）由包含聚乙烯醇聚合物和电解质的第一层高分子树脂膜（5）和覆盖在第一层的表面上的第二吸湿性高分子树脂膜（6）的一体结构制成，并且湿度被有助于该湿度敏感膜（4）的电阻值的变化。

13. 发明授权

US4357426A Humidity sensitive ceramics 失效
标题翻译：湿度敏感陶瓷
公开(公告)号：US4357426A
公开(公告)日：1982-11-02
申请号：US332096
申请日：1981-12-17
申请人： Michihiro Murata , Shinsei Okabe
发明人： Michihiro Murata , Shinsei Okabe
IPC分类号： H01C7/00 , C04B35/00 , C04B35/01 , C04B35/46 , C04B35/462 , C04B35/468 , G01N27/12 , C04B35/50
CPC分类号： C04B35/4682 , C04B35/01 , C04B35/462 , G01N27/121
摘要： A humidity sensitive ceramics comprises a sintered body consisting essentially of a semiconductive compound oxide with a perovskite structure and a compound oxide, said semiconductive compound oxide having a composition expressed by the general formula (I):A.sub.1-x A'.sub.x BO.sub.3-.delta.. . . (I)wherein A is at least one element selected from the group consisting of rare earth elements with atomic numbers 57 to 71, yttrium and hafnium, A' is at least one element selected from the group consisting of alkaline-earth metals, B is at least one element selected from the group consisting of transition elements with atomic numbers 23 to 30, x is a mole fraction and takes a value of the following range, 0.ltoreq.x.ltoreq.1, and .delta. is a non-stoichiometric parameter, said compound oxide having a composition expressed by the general formula (II):AMO.sub.3 . . . (II)wherein A is at least one element selected from the group consisting of alkaline earth elements, Zn, Cd, Fe, Co, Ni, Mn and Pb, M is at least one element selected from the group consisting of Ti, Zr, Hf and Sn.
摘要翻译：湿敏陶瓷包括基本上由具有钙钛矿结构的半导体复合氧化物和复合氧化物组成的烧结体，所述半导体复合氧化物具有由通式（I）表示的组成：A1-xA'xBO3-δ。。。（I）其中A是选自原子序数57〜71的稀土元素，钇和铪中的至少一种元素，A'是选自碱土金属中的至少一种元素，B是选自原子序数23至30的过渡元素中的至少一种元素，x是摩尔分数，并且取以下范围的值，0≤x≤1，δ是非化学计量的参数，所述复合氧化物具有由通式（II）表示的组成：AMO 3。。。（II）其中A是选自碱土元素，Zn，Cd，Fe，Co，Ni，Mn和Pb中的至少一种元素，M是选自Ti，Zr， Hf和Sn。

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