公开(公告)号：US5945062A

公开(公告)日：1999-08-31

申请号：US24343

申请日：1998-02-17

申请人： Stephen Chwastiak ,  Sai-Kwing Lau ,  Carl H. McMurtry ,  Gajawalli V. Srinivasan

发明人： Stephen Chwastiak ,  Sai-Kwing Lau ,  Carl H. McMurtry ,  Gajawalli V. Srinivasan

IPC分类号： C04B35/573 ,  C04B35/628 ,  C04B35/80 ,  B28B1/00

CPC分类号： C04B35/62865 ,  C04B35/573 ,  C04B35/624 ,  C04B35/6263 ,  C04B35/62857 ,  C04B35/62868 ,  C04B35/62884 ,  C04B35/62897 ,  C04B35/6316 ,  C04B35/806 ,  C04B2235/3217 ,  C04B2235/3427 ,  C04B2235/3826 ,  C04B2235/46 ,  C04B2235/5244 ,  C04B2235/616 ,  C04B2235/96 ,  Y10T428/2918 ,  Y10T428/2938 ,  Y10T428/2956 ,  Y10T428/2958

摘要： The invention includes a process for producing a reaction bonded silicon carbide composite reinforced with coated silicon carbide fibers which is suitable for high temperature applications. The process includes the steps of coating SiC fibers with AlN, BN or TiB.sub.2 ; treating the coated fibers with a mixture of SiC powder, water and a surfactant; preparing a slurry comprising SiC powder and water; infiltrating the coated fibers with the slurry to form a cast; drying the cast to form a green body; and reaction bonding the green body to form a dense SiC fiber reinforced reaction bonded matrix composite.The invention further includes a SiC fiber reinforced SiC composite comprising a reaction bonded SiC matrix, a SiC fiber reinforcement possessing thermal stability at high temperatures and an interface coating on the fibers having chemical and mechanical compatibility with the SiC matrix and with the SiC fibers.

摘要翻译： 本发明包括一种用于生产适用于高温应用的涂覆碳化硅纤维增强的反应粘合碳化硅复合材料的方法。 该方法包括用AlN，BN或TiB2涂覆SiC纤维的步骤; 用SiC粉末，水和表面活性剂的混合物处理涂覆的纤维; 制备包含SiC粉末和水的浆料; 用浆料渗透涂覆的纤维以形成铸件; 干燥铸造形成一个绿色的身体; 并与生坯反应结合形成致密的SiC纤维增强反应键合基复合材料。 本发明还包括一种SiC纤维增强SiC复合材料，其包括反应结合的SiC基体，在高温下具有热稳定性的SiC纤维增强层和在与SiC基体和SiC纤维具有化学和机械相容性的纤维上的界面涂层。

公开(公告)号：US5616426A

公开(公告)日：1997-04-01

申请号：US536716

申请日：1995-09-29

申请人： Michael A. Tenhover ,  Irving B. Ruppel

发明人： Michael A. Tenhover ,  Irving B. Ruppel

IPC分类号： G11B5/73 ,  G11B5/84 ,  B32B9/00

CPC分类号： G11B5/7315 ,  G11B5/8404 ,  Y10T428/24355 ,  Y10T428/2457 ,  Y10T428/30

摘要： Substrates are disclosed having an ultra-smooth surface finish thereon rendering them useful in making high density magnetic storage components, such as a computer hard disk or thin-film head which can read and/or write data on such disks. The substrates are comprised of a non-oxide ceramic base which is coated with a smoothing layer comprised of amorphous, non-stoichiometric silicon carbide corresponding to the formula SiC.sub.x, wherein x is the molar ratio of carbon to silicon and is greater than 1. Also disclosed are processes for making the substrates and components.

摘要翻译： 公开了具有超光滑表面光洁度的基板，使得它们可用于制造高密度磁存储部件，例如可以在这种盘上读取和/或写入数据的计算机硬盘或薄膜头。 衬底由非氧化物陶瓷基底组成，其中涂有由对应于式SiC x的无定形非化学计量碳化硅组成的平滑层，其中x是碳与硅的摩尔比并且大于1.另外 公开的是制造基板和部件的工艺。

公开(公告)号：US5541145A

公开(公告)日：1996-07-30

申请号：US489615

申请日：1995-06-12

申请人： Jonathan H. Harris ,  Subhash L. Shinde ,  Takeshi Takamori ,  Robert A. Youngman ,  Lester W. Herron ,  Benjamin V. Fasano

发明人： Jonathan H. Harris ,  Subhash L. Shinde ,  Takeshi Takamori ,  Robert A. Youngman ,  Lester W. Herron ,  Benjamin V. Fasano

IPC分类号： C04B35/581

CPC分类号： C04B35/581 ,  Y10S428/901

摘要： An aluminum nitride ceramic having desired properties suitable for electronic packaging applications can be prepared from a novel aluminum nitride powder/sintering aid mixture. The sintering aid comprises a glassy component formed from alumina, calcia and boria, and a non-vitreous component comprising an element or compound of a metal of Group IIa, IIIa, or the lanthanides, preferably crystalline oxides, reactibis with the crystallized glass component and the alumina from the Al N grains. Alternatively, the sintering aid comprises a multi-component glass composition capable of forming the above components upon melting and thereafter crystallizing upon reaction.

摘要翻译： 可以由新型氮化铝粉末/烧结助剂混合物制备具有适合于电子封装应用的所需性能的氮化铝陶瓷。 烧结助剂包括由氧化铝，氧化钙和氧化硼形成的玻璃状组分，以及包含IIa，IIIa族金属或镧系元素的元素或化合物的非玻璃状组分，优选结晶氧化物与结晶的玻璃组分反应， 来自Al N颗粒的氧化铝。 或者，烧结助剂包括能够在熔化后形成上述组分并随后在反应后结晶的多组分玻璃组合物。

公开(公告)号：US5459112A

公开(公告)日：1995-10-17

申请号：US306087

申请日：1994-09-14

申请人： Baek H. Kim

发明人： Baek H. Kim

IPC分类号： C04B35/565 ,  C04B35/591 ,  C04B35/567

CPC分类号： C04B35/565 ,  C04B35/591

摘要： This invention provides a reaction-bonded silicon carbide article having superior abrasion resistance, oxidation resistance and uniformity in which the bond phase comprises appreciable amounts of both silicon oxynitride and alumina. Also provided are a raw batch and a process for producing the reaction-bonded article.

摘要翻译： 本发明提供了具有优异的耐磨性，抗氧化性和均匀性的反应粘合碳化硅制品，其中粘结相包括相当量的氮氧化硅和氧化铝。 还提供了生料和生产反应粘合制品的方法。

公开(公告)号：US5273821A

公开(公告)日：1993-12-28

申请号：US790938

申请日：1991-11-12

申请人： James R. Olson ,  Mark D. Stahlman

发明人： James R. Olson ,  Mark D. Stahlman

IPC分类号： C04B28/24 ,  C04B35/80 ,  D02G3/00

CPC分类号： C04B28/14 ,  C04B28/24 ,  C04B35/803 ,  Y10T428/29 ,  Y10T428/2949

摘要： A high strength ceramic fiber board having a green strength of at least 300 psi and a green density of less than about 22 lb/ft.sup.3 ; and having a composition comprising 65-97.5% wt. ceramic fiber, 1-10% wt. PVA fiber, 0.5-10% wt. cationic starch, 0-25% wt. clay filler and 1.0-15% wt. colloidal silica.

摘要翻译： 具有至少300psi的生坯强度和小于约22lb / ft 3的绿色密度的高强度陶瓷纤维板; 并且具有包含65-97.5重量％的组合物。 陶瓷纤维，1-10％ PVA纤维，0.5-10重量％ 阳离子淀粉，0-25％ 粘土填料和1.0-15％重量。 胶体二氧化硅。

公开(公告)号：US5190631A

公开(公告)日：1993-03-02

申请号：US898171

申请日：1992-06-12

申请人： Henry Windischmann ,  George Fischer

发明人： Henry Windischmann ,  George Fischer

IPC分类号： C23C14/06

CPC分类号： C23C14/0635

摘要： A process for forming a transparent silicon carbide film on substrates by magnetron sputtering a silicon carbide target in a partial vacuum having a partial pressure of hydrogen and argon.

摘要翻译： 通过在具有氢和氩的分压的部分真空中用磁控溅射碳化硅靶来在基板上形成透明碳化硅膜的工艺。

公开(公告)号：US5088893A

公开(公告)日：1992-02-18

申请号：US649221

申请日：1991-01-25

申请人： Ronald E. Gilbert ,  George S. Mordue

发明人： Ronald E. Gilbert ,  George S. Mordue

IPC分类号： B22D39/00 ,  F04D7/06 ,  F04D13/02 ,  F04D29/04 ,  F04D29/047

CPC分类号： F04D29/047 ,  B22D39/00 ,  F04D13/021 ,  F04D7/065

摘要： A molten metal pump includes an impeller disposed at the end of an elongate drive shaft. The drive shaft is disposed within an elongate, hollow post. The impeller and the end of the post are adapted to be immersed in molten metal. An inert gas is conveyed through the gap between the outer surface of the drive shaft and the inner surface of the post, which gas is discharged into the molten metal in the vicinity of the impeller. Because the drive shaft is insulated from the molten metal, it can be made of a durable material such as steel; because the post is stationary relative to the molten metal, the metal is stirred only by the impeller, and not by the drive shaft. The invention includes other features such as a quick disconnect capability and a radial adjustment capability.

摘要翻译： 熔融金属泵包括设置在细长驱动轴的端部处的叶轮。 驱动轴设置在细长的中空柱内。 叶轮和柱的端部适于浸入熔融金属中。 惰性气体通过驱动轴的外表面和柱的内表面之间的间隙传送，该气体被排放到叶轮附近的熔融金属中。 因为驱动轴与熔融金属绝缘，所以它可以由诸如钢的耐用材料制成; 因为柱相对于熔融金属是固定的，所以金属仅由叶轮而不是驱动轴搅动。 本发明包括诸如快速断开能力和径向调节能力的其它特征。

公开(公告)号：US5029821A

公开(公告)日：1991-07-09

申请号：US444684

申请日：1989-12-01

申请人： Ari Bar-on ,  Kenneth L. Gallaher ,  Jonathan S. Greenberg ,  David V. Neff ,  Douglas H. Rothenberg

发明人： Ari Bar-on ,  Kenneth L. Gallaher ,  Jonathan S. Greenberg ,  David V. Neff ,  Douglas H. Rothenberg

IPC分类号： F27B3/22 ,  F27B3/28 ,  F27D19/00 ,  F27D21/00

CPC分类号： F27B3/22 ,  F27D21/00 ,  F27B3/28 ,  F27D2019/0006

摘要： A method for controlling the magnesium content of molten aluminum includes the steps of injecting a halogen gas into the molten aluminum, sampling a portion of the resulting gases evolved from the molten aluminum, detecting the presence of constituents in the sampled gases and/or characteristics of the sampled gases indicative of the imminent evolution of unreacted halogen gas, and adjusting the rate of halogen gas injection to approach the point where unreacted halogen gas is about to be evolved. In the preferred embodiment, the halogen gas is chlorine; the detected constituents are gaseous hydrogen chloride (CHl) and aluminum chlorhydrate compounds (Al.sub.2 Cl.sub.x .multidot.(OH).sub.6-x); and the detected characteristic is the opacity of the sampled gases. The invention includes a technique for adjusting the rate of halogen gas injection so as to approach the optimal rate. The invention also includes (1) a sensor for detecting the content of HCl and Al.sub.2 Cl.sub.x .multidot.(OH).sub.6-x and the opacity of the withdrawn gases, (2) apparatus for controlling the injection of halogen gas in response to detected conditions, and (3) molten aluminum having a desired content of magnesium produced by the method according to the invention.

摘要翻译： 用于控制熔融铝的镁含量的方法包括以下步骤：将卤素气体注入到熔融铝中，对从熔融铝放出的所得气体的一部分进行取样，检测取样气体中成分的存在和/或 取样的气体指示未反应的卤素气体的即将发生，并且调节卤素气体注入的速率接近未被反应的卤素气体即将放出的点。 在优选实施例中，卤素气体是氯气; 检测到的成分是气态氯化氢（CHI）和氯化铝水合物（Al 2 Cl x（OH）6-x）; 检测到的特征是取样气体的不透明度。 本发明包括一种调节卤素气体注入速率以达到最佳速率的技术。 本发明还包括（1）用于检测HCl和Al 2 Cl（OH）6-x的含量的传感器和排出气体的不透明度，（2）响应于检测到的条件控制卤素气体的注入的装置，和 3）通过根据本发明的方法生产的具有所需含量的镁的熔融铝。

公开(公告)号：US4930986A

公开(公告)日：1990-06-05

申请号：US629526

申请日：1984-07-10

申请人： Paul V. Cooper

发明人： Paul V. Cooper

IPC分类号： B01F7/00 ,  B01F7/16 ,  B01F15/00 ,  C21C7/072 ,  C22B9/05 ,  C22B9/10

CPC分类号： B01F7/00358

摘要： An impeller assembly is disclosed which is arranged to produce linear flow of fluid which prohibits radial flow of that fluid. An impeller is surrounded by a hollow cylindrical section mounted and fixed to the periphery of the impeller blades. The cylindrical section may extend either beyond the leading edges of the impeller blades or beyond the trailing edges of the impeller blades, or both, along the axis of rotation of the impeller assembly.

摘要翻译： 公开了一种叶轮组件，其布置成产生阻止该流体径向流动的流体流动。 叶轮由安装并固定在叶轮叶片周边的中空圆柱形部分包围。 圆柱形部分可以沿着叶轮组件的旋转轴线延伸超过叶轮叶片的前缘或超过叶轮叶片的后缘，或两者延伸。

公开(公告)号：US4896017A

公开(公告)日：1990-01-23

申请号：US268119

申请日：1988-11-07

申请人： Lewis M. Koppel ,  Jonathan J. Kim ,  Viswanathan Venksteswaran

发明人： Lewis M. Koppel ,  Jonathan J. Kim ,  Viswanathan Venksteswaran

IPC分类号： H05H1/34

CPC分类号： H05H1/34 ,  H05H2001/3478 ,  H05H2001/3484

摘要： An anode for plasma torch that has a primary section and a secondary section with a gradual transition between the sections. The diameter of the hollow primary section tapers down toward a transition zone, at which point the anode formed by the sections makes a gradual transition to the secondary section. The secondary section is cylindrical and has a diameter larger than that of the primary section from which the plasma exists the anode. The transition zone will describe a generally conical surface and may include a convex radius on the neck where the primary and transition sections meet.

摘要翻译： 用于等离子体焰炬的阳极，其具有初级部分和在部分之间逐渐过渡的次级部分。 中空初级部分的直径朝向过渡区域逐渐变细，此时由这些部分形成的阳极逐渐向第二部分转变。 次级部分是圆柱形的，其直径大于等离子体从该部分开始的阳极的直径。 过渡区域将描述一个大致圆锥形的表面，并且可以在颈部上包括初级和过渡段相遇的凸半径。