公开(公告)号：US4931253A

公开(公告)日：1990-06-05

申请号：US392673

申请日：1989-08-07

申请人： Daniel Eylon ,  Francis H. Froes ,  Gerhard Welsch

发明人： Daniel Eylon ,  Francis H. Froes ,  Gerhard Welsch

IPC分类号： C22C1/04 ,  C22F1/18

CPC分类号： C22C1/0458 ,  C22F1/183

摘要： A method for producing a titanium alloy powder metallurgy article having high resistance to loading and creep at high temperature is described and comprises the steps of simultaneously pressing a preselected quantity of titanium alloy powder at from 15 to 60 ksi and heating the powder to a temperature just below the beta transus temperature of the alloy to promote beta to alpha phase transformation in the alloy, and then slowly cooling the compacted powder under pressure.

摘要翻译： 描述了一种在高温下具有高耐载荷和蠕变性的钛合金粉末冶金制品的制造方法，其特征在于包括以下步骤：将预选量的钛合金粉末按15至60ksi同时加压至仅仅温度 低于合金的β转变温度以促进合金中的β相转变，然后在压力下缓慢冷却压实的粉末。

公开(公告)号：US20050168919A1

公开(公告)日：2005-08-04

申请号：US11036507

申请日：2005-01-12

申请人： Gerhard Welsch ,  Donald McGervey

发明人： Gerhard Welsch ,  Donald McGervey

IPC分类号： H01G9/04 ,  H01G9/042 ,  H01G9/02

CPC分类号： H01G9/042 ,  H01G9/04

摘要： A capacitor anode (1) includes a substrate (10) which is formed from an alloy, metal, or metal compound which has a high tensile yield strength and high elastic modulus. The material has a composition which can be anodized, yielding an adherent and compressively stressed dielectric film (12) of pure, mixed, alloyed, or doped oxide that has a high usable dielectric strength (e.g., over 50 V/μm) and high dielectric constant (e.g., 20 to over 10,000). A capacitor formed from the anode has a high energy density.

摘要翻译： 电容器阳极（1）包括由具有高拉伸屈服强度和高弹性模量的合金，金属或金属化合物形成的基板（10）。 该材料具有可被阳极氧化的组合物，产生具有高可用介电强度（例如，超过50V / mum）和高电介质的纯的，混合的，合金的或掺杂的氧化物的粘附和压缩应力介电膜（12） 常数（例如，20到超过10,000）。 由阳极形成的电容器具有高的能量密度。

公开(公告)号：US06495021B2

公开(公告)日：2002-12-17

申请号：US09809876

申请日：2001-03-16

申请人： Gerhard Welsch ,  Donald McGervey

发明人： Gerhard Welsch ,  Donald McGervey

IPC分类号： H01G9048

CPC分类号： H01G9/022 ,  H01G9/048

摘要： A dendritic sponge which is directionally-grown on a substrate material has a high surface to volume ratio and is suitable for forming anodes for highly efficient capacitors. A dielectric film is formed on the sponge surface by oxidizing the surface. In a preferred embodiment, the dielectric is grown on titanium sponge and is doped with oxides of Ca, Mg, Sr, Be, or Ba to improve the film's dielectric constant or with higher valent cations, such as Cr6+, V5+, Ta5+, Mo6+, Nb5+, W6+, and P5+, to reduce the oxygen vacancy concentration and leakage current of the dielectric film. A capacitor formed from the sponge includes a cathode electrolyte which serves as an electrical conductor and to repair the dielectric film by re-oxidizing the anode surface at areas of local breakdown. Sponges of titanium, tantalum, and aluminum form efficient dielectric films. In another embodiment, sponges of elements which do not form efficient dielectric films are coated with a dielectric material. Capacitors formed with titanium sponges have energy densities of 10−2 to 50 Watt hours and power densities of 100,000 to 10,000,000 Watts per kilogram of titanium.

摘要翻译： 在基板材料上定向生长的树枝状海绵具有高的表面与体积比，并且适于形成用于高效电容器的阳极。 通过氧化表面在海绵表面上形成电介质膜。 在优选的实施方案中，电介质在海绵钛上生长，并掺杂有Ca，Mg，Sr，Be或Ba的氧化物以改善膜的介电常数，或者用较高价的阳离子如Cr6 +，V5 +，Ta5 +，Mo6 +， Nb5 +，W6 +和P5 +，以降低介电膜的氧空位浓度和漏电流。 由海绵形成的电容器包括用作电导体的阴极电解质，并且通过在局部击穿的区域再氧化阳极表面来修复电介质膜。 钛，钽和铝的海绵形成有效的介电膜。 在另一个实施例中，不形成有效介电膜的元件的海绵被电介质材料涂覆。 形成钛海绵的电容器的能量密度为10-2至50瓦时，功率密度为每千克钛10万至10,000,000瓦特。

公开(公告)号：US06226173B1

公开(公告)日：2001-05-01

申请号：US09238082

申请日：1999-01-26

申请人： Gerhard Welsch ,  Donald McGervey

发明人： Gerhard Welsch ,  Donald McGervey

IPC分类号： H01G902

CPC分类号： H01G9/022 ,  H01G9/048

摘要： A dendritic sponge which is directionally-grown on a substrate material has a high surface to volume ratio and is suitable for forming anodes for highly efficient capacitors. A dielectric film is formed on the sponge surface by oxidizing the surface. In a preferred embodiment, the dielectric is grown on titanium sponge and is doped with oxides of Ca, Mg, Sr, Be, or Ba to improve the film's dielectric constant or with higher valent cations, such as Cr6+, V5+, Ta5+, Mo6+, Nb5+, W6+, and P5+, to reduce the oxygen vacancy concentration and leakage current of the dielectric film. A capacitor formed from the sponge includes a cathode electrolyte which serves as an electrical conductor and to repair the dielectric film by re-oxidizing the anode surface at areas of local breakdown. Sponges of titanium, tantalum, and aluminum form efficient dielectric films. In another embodiment, sponges of elements which do not form efficient dielectric films are coated with a dielectric material. Capacitors formed with titanium sponges have energy densities of 10−2 to 50 Watt hours and power densities of 100,000 to 10,000,000 Watts per kilogram of titanium.

摘要翻译： 在基板材料上定向生长的树枝状海绵具有高的表面与体积比，并且适于形成用于高效电容器的阳极。 通过氧化表面在海绵表面上形成电介质膜。 在优选的实施方案中，电介质在海绵钛上生长，并掺杂有Ca，Mg，Sr，Be或Ba的氧化物以改善膜的介电常数，或者用较高价的阳离子如Cr6 +，V5 +，Ta5 +，Mo6 +， Nb5 +，W6 +和P5 +，以降低介电膜的氧空位浓度和漏电流。 由海绵形成的电容器包括用作电导体的阴极电解质，并且通过在局部击穿的区域再氧化阳极表面来修复电介质膜。 钛，钽和铝的海绵形成有效的介电膜。 在另一个实施例中，不形成有效介电膜的元件的海绵被电介质材料涂覆。 形成钛海绵的电容器的能量密度为10-2至50瓦时，功率密度为每千克钛10万至10,000,000瓦特。