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11. 发明授权

US06600645B1 Dielectric composite materials and method for preparing 失效
标题翻译：介电复合材料及其制备方法
公开(公告)号：US06600645B1
公开(公告)日：2003-07-29
申请号：US10256843
申请日：2002-09-27
申请人： Robert J. Lauf , Kimberly K. Anderson , Frederick C. Montgomery , Jack L. Collins , John J. Felten
发明人： Robert J. Lauf , Kimberly K. Anderson , Frederick C. Montgomery , Jack L. Collins , John J. Felten
IPC分类号： H01G406
CPC分类号： C01G23/003 , C01G23/006 , C01G23/0536 , C01P2004/60 , C01P2004/61 , C04B35/462 , C04B35/468 , C04B35/472 , C04B35/6281 , C04B35/62886 , C04B2235/02 , C04B2235/3215 , C04B2235/3224 , C04B2235/3232 , C04B2235/3236 , C04B2235/3296 , C04B2235/44 , C04B2235/449 , C04B2235/528 , C04B2235/79 , C04B2235/94 , H01G4/206 , H05K1/162
摘要： The invention allows the fabrication of small, dense beads of dielectric materials with selected compositions, which are incorporated into a polymeric matrix for use in capacitors, filters, and the like. A porous, generally spherical bead of hydrous metal oxide containing titanium or zirconium is made by a sol-gel process to form a substantially rigid bead having a generally fine crystallite size and correspondingly finely distributed internal porosity. The resulting gel bead may be washed and hydrothermally reacted with a soluble alkaline earth salt (typically Ba or Sr) at elevated temperature and pressure to convert the bead into a mixed hydrous titanium- or zirconium-alkaline earth oxide while retaining the generally spherical shape. Alternatively, the gel bead may be made by coprecipitation. This mixed oxide bead is then washed, dried and calcined to produce the desired (BaTiO3, PbTiO3, SrZrO3) structure. The sintered beads are incorporated into a selected polymer matrix. The resulting dielectric composite material may be electrically “poled” if desired.
摘要翻译：本发明允许制造具有所选组合物的小而致密的电介质材料的珠粒，其被并入用于电容器，过滤器等中的聚合物基质中。通过溶胶 - 凝胶法制备含有钛或锆的含水金属氧化物的多孔，通常为球形的珠粒，以形成具有通常微细尺寸和相应地精细分布的内部孔隙率的基本刚性的珠粒。所得到的凝胶珠可以在升高的温度和压力下与可溶性碱土金属盐（通常为Ba或Sr）进行洗涤和水热反应，以将珠粒转化成混合的含水钛或锆 - 碱土金属氧化物，同时保持大致球形。或者，凝胶珠可以通过共沉淀制成。然后将该混合氧化物珠洗涤，干燥并煅烧以产生所需的（BaTiO 3，PbTiO 3，SrZrO 3）结构。将烧结的珠子并入选定的聚合物基质中。如果需要，所得到的电介质复合材料可以电“极化”。

12. 发明授权

US06492016B1 Method for preparing spherical ferrite beads and use thereof 失效
标题翻译：制备球形铁氧体磁珠的方法及其用途
公开(公告)号：US06492016B1
公开(公告)日：2002-12-10
申请号：US09917356
申请日：2001-07-27
申请人： Robert J. Lauf , Kimberly K. Anderson , Frederick C. Montgomery , Jack L. Collins
发明人： Robert J. Lauf , Kimberly K. Anderson , Frederick C. Montgomery , Jack L. Collins
IPC分类号： C01G4906
CPC分类号： H01F1/11 , C01G49/0036 , C01P2002/76 , C01P2004/20 , C01P2004/61 , C01P2004/62 , Y10T428/256 , Y10T428/257 , Y10T428/258 , Y10T428/2982
摘要： The invention allows the fabrication of small, dense, highly polished spherical beads of hexagonal ferrites with selected compositions for use in nonreciprocal microwave and mm-wave devices as well as in microwave absorbent or reflective coatings, composites, and the like. A porous, generally spherical bead of hydrous iron oxide is made by a sol-gel process to form a substantially rigid bead having a generally fine crystallite size and correspondingly finely distributed internal porosity. The resulting gel bead is washed and hydrothermally reacted with a soluble alkaline earth salt (typically Ba or Sr) under conditions of elevated temperature and pressure to convert the bead into a mixed hydrous iron-alkaline earth oxide while retaining the generally spherical shape. This mixed oxide bead is then washed, dried, and calcined to produce the desired (BaFe12O19 or SrFe12O19) crystal structure. The calcined bead is then sintered to form a dense bead of the BaFe12O19 and SrFe12O19 phase suitable for polishing and incorporation into various microwave devices and components.
摘要翻译：本发明允许制造用于非互易微波和毫米波装置以及微波吸收或反射涂层，复合材料等的选定组合物的小而致密，高度抛光的六方晶系铁氧体球形珠。通过溶胶 - 凝胶法制备多孔的，通常为球形的含水氧化铁珠，以形成具有通常微细尺寸和相应地精细分布的内部孔隙率的基本刚性的珠粒。在升高的温度和压力的条件下，将所得凝胶珠洗涤并与可溶性碱土金属盐（通常为Ba或Sr）水热反应，以将珠粒转化为混合的含水铁 - 碱土金属氧化物，同时保持大致球形。然后将该混合氧化物珠粒洗涤，干燥并煅烧以产生所需的（BaFe12O19或SrFe12O19）晶体结构。然后将煅烧的珠粒烧结以形成适合抛光并掺入各种微波装置和组件的BaFe12O19和SrFe12O19相的致密珠粒。

13. 发明授权

US5316797A Preparing refractory fiberreinforced ceramic composites 失效
$Preparing refractory fiberreinforced ceramic composites$
标题翻译：制备耐火纤维增强陶瓷复合材料
公开(公告)号：US5316797A
公开(公告)日：1994-05-31
申请号：US553904
申请日：1990-07-13
申请人： David A. Hazlebeck , Frederick C. Montgomery , Holger H. Streckert
发明人： David A. Hazlebeck , Frederick C. Montgomery , Holger H. Streckert
IPC分类号： C03C14/00 , C04B35/628 , C04B35/80 , C22C49/04 , B05D3/02 , B05D1/36
CPC分类号： C04B35/62897 , C03C14/002 , C04B35/14 , C04B35/185 , C04B35/19 , C04B35/195 , C04B35/488 , C04B35/49 , C04B35/565 , C04B35/58092 , C04B35/581 , C04B35/584 , C04B35/624 , C04B35/6264 , C04B35/62655 , C04B35/62847 , C04B35/62852 , C04B35/803 , C04B35/806 , C22C49/04 , C03C2214/03 , C04B2235/3217 , C04B2235/3225 , C04B2235/40 , C04B2235/441 , C04B2235/5228 , C04B2235/5244
摘要： Inexpensive process is provided for the application of substantially uniform metal oxide coatings onto continuous multi-filament refractory fiber tows. The resulting coated refractory fiber tows are useful, for example, for the preparation of refractory fiber composites having excellent physical and mechanical properties. Composites can be prepared employing a ceramic, metal or glass matrix.
摘要翻译：提供了廉价的方法，用于将基本上均匀的金属氧化物涂层施加到连续的复丝耐火纤维丝束上。所得到的涂覆的耐火纤维丝束可用于例如具有优异的物理和机械性能的耐火纤维复合材料的制备。可以使用陶瓷，金属或玻璃基质制备复合材料。

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