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公开(公告)号：US4599677A
公开(公告)日：1986-07-08
申请号：US616508
申请日：1984-06-01
IPC分类号： C04B35/497 , H01G4/12 , C04B35/46
CPC分类号： H01G4/1254 , C04B35/497
摘要： A capacitive energy storage device is provided utilizing a ferroelectric pyrochlore ceramic material as the dielectric. The preferred ceramic material has the formula:(Cd.sub.1-x Pb.sub.x).sub.2 (Nb.sub.1-y Ta.sub.y).sub.2 O.sub.7,where x and y are numbers in the range of from 0 to 1. Other ceramic materials used in the invention are the non-pyrochlore ceramic material (Sr.sub.1-a Ba.sub.a)TiO.sub.3 or the non-pyrochlore ceramic material (Pb.sub.1-b Ni.sub.b).sub.3 MgNb.sub.2 O.sub.9. These ceramic materials exhibit large dielectric constants at temperatures in the range of 50.degree.-90.degree. K.
摘要翻译： 使用铁电烧绿石陶瓷材料作为电介质来提供电容性储能装置。 优选的陶瓷材料具有式（Cd1-xPbx）2（Nb1-yTay）2O7，其中x和y为0-1的范围。本发明中使用的其它陶瓷材料是非烧绿石陶瓷材料 （Sr1-aBaa）TiO3或非烧绿石陶瓷材料（Pb1-bNib）3MgNb2O9。 这些陶瓷材料在50°-90°K的温度下表现出很大的介电常数。
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2.发明授权Materials and methods for pressure and temperature sensors at cryogenic temperatures 失效压力和温度传感器在低温温度下的材料和方法
公开(公告)号：US4545254A
公开(公告)日：1985-10-08
申请号：US616345
申请日：1984-06-01
CPC分类号： G01K7/343 , G01L9/0005
摘要： Capacitive pressure and temperature sensing devices for use at cryogenic temperatures are provided utilizing a quantum ferroelectric pyrochlore ceramic material as the dielectric. The ceramic material has the formula:(Cd.sub.1-x M.sub.x).sub.2 (Nb.sub.1-y M'.sub.y).sub.2 O.sub.7where M is Pb, Ca, Sr, Ba, or mixtures thereof; where M' is Ta, Sb, or mixtures thereof; and where x and y are numbers in the range of from 0 to 1. M and M' are chosen such that the pressure sensing device uses a ceramic with a nearly temperature independent dielectric constant while the temperature sensing device uses a ceramic with a strongly temperature dependent dielectric constant. The sensors may comprise multi-layered capacitive devices, and may be combined into a single temperature and pressure sensing device.
摘要翻译： 使用量子铁电烧绿石陶瓷材料作为电介质来提供在低温下使用的电容压力和温度感测装置。 陶瓷材料具有式（Cd1-xMx）2（Nb1-yMyy）2O7，其中M是Pb，Ca，Sr，Ba或它们的混合物; 其中M'是Ta，Sb或其混合物; 并且其中x和y是0至1范围内的数字.M和M'被选择为使得压力感测装置使用具有接近于温度的独立介电常数的陶瓷，而温度感测装置使用具有强烈温度的陶瓷 依赖介电常数。 传感器可以包括多层电容性装置，并且可以组合成单个温度和压力感测装置。
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