专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5900208A High-temperature flowable sintering bath and method of using same 失效
标题翻译：高温可流动烧结浴及其使用方法
公开(公告)号：US5900208A
公开(公告)日：1999-05-04
申请号：US782683
申请日：1997-01-15
申请人： Dale E. Wittmer , Charles W. Miller
发明人： Dale E. Wittmer , Charles W. Miller
IPC分类号： C04B35/584 , F27B9/24 , F27B9/40 , F27D3/12 , F27D5/00 , F27D19/00 , F27D3/00
CPC分类号： C04B35/584 , F27B9/2407 , F27D3/12 , F27D5/0068 , F27B9/40 , F27D2003/121 , F27D2019/0059 , F27D5/00
摘要： An apparatus and method for high-temperature precision sintering applications are disclosed wherein a flowable bed of a refractory particulate material is used to support an article during sintering to minimize distortions caused by shrinkage.
摘要翻译：公开了一种用于高温精密烧结应用的装置和方法，其中使用耐火颗粒材料的可流动床在烧结期间支撑物品以最小化由收缩引起的变形。

2. 发明授权

US5456877A Method of preparing a high solids content, low viscosity ceramic slurry 失效
标题翻译：制备高固含量，低粘度陶瓷浆料的方法
公开(公告)号：US5456877A
公开(公告)日：1995-10-10
申请号：US206989
申请日：1994-03-04
申请人： Terry N. Tiegs , Dale E. Wittmer
发明人： Terry N. Tiegs , Dale E. Wittmer
IPC分类号： C04B35/634 , B22F9/00 , B22F9/02
CPC分类号： C04B35/63424 , C04B35/634 , C04B35/63444
摘要： A method for producing a high solids content, low viscosity ceramic slurry composition comprises turbomilling a dispersion of a ceramic powder in a liquid to form a slurry having a viscosity less than 100 centipoise and a solids content equal to or greater than 48 volume percent.
摘要翻译：用于生产高固体含量的低粘度陶瓷浆料组合物的方法包括将陶瓷粉末在液体中的分散体涡轮蒸发以形成粘度小于100厘泊和固体含量等于或大于48体积％的浆料。

3. 发明授权

US08506881B2 Intermetallic bonded diamond composite composition and methods of forming articles from same 有权
标题翻译：金属间金刚石复合材料组合物及其制备方法
公开(公告)号：US08506881B2
公开(公告)日：2013-08-13
申请号：US11389546
申请日：2006-03-24
申请人： Dale E. Wittmer , Peter Filip
发明人： Dale E. Wittmer , Peter Filip
IPC分类号： C22C33/02
CPC分类号： B22F3/12 , B22F3/10 , B22F2005/002 , B22F2009/043 , B22F2998/10 , C22C26/00 , C22C32/0084 , C22C2026/006 , B22F9/04 , B22F3/02
摘要： An intermetallic bonded diamond composite composition and methods of processing such a composition are provided by the present invention. The intermetallic bonded diamond composite composition preferably comprises a nickel aluminide (Ni3Al) binder and diamond particles dispersed within the nickel aluminide (Ni3Al) binder. Additionally, the composite composition has a processing temperature of at least about 1,200° C. and is processed such that the diamond particles remain intact and are not converted to graphite or vaporized by the high-temperature process. Methods of forming the composite composition are also provided that generally comprise the steps of milling, pressing, and sintering the high-temperature intermetallic binder and diamond particles.
摘要翻译：本发明提供金属间键合金刚石复合材料组合物及其加工方法。金属间键合金刚石复合材料组合物优选包括分散在镍铝化物（Ni3Al）粘合剂内的镍铝化物（Ni3Al）粘合剂和金刚石颗粒。此外，复合组合物的加工温度为至少约1200℃，并且被处理使得金刚石颗粒保持完整并且不会转化为石墨或通过高温过程蒸发。还提供了形成复合组合物的方法，其通常包括铣削，压制和烧结高温金属间粘合剂和金刚石颗粒的步骤。

4. 发明授权

US4607017A Silicon nitride based cutting tool 失效
标题翻译：氮化硅基切削工具
公开(公告)号：US4607017A
公开(公告)日：1986-08-19
申请号：US746705
申请日：1985-06-20
申请人： Robert W. Wolfe , Dale E. Wittmer
发明人： Robert W. Wolfe , Dale E. Wittmer
IPC分类号： C04B35/584 , C04B35/593 , C04B35/58
CPC分类号： C04B35/584 , C04B35/593 , Y10T82/29
摘要： A silicon nitride based cutting tool is disclosed consisting essentially of in percent by weight about 5% aluminum oxide, about 6% yttrium oxide, from about 1.5% to about 5.5% silicon dioxide, and the balance silicon nitride, and having a density of at least about 99% of the theoretical density.
摘要翻译：公开了一种基于氮化硅的切削工具，其主要包括以重量百分比计约5％的氧化铝，约6％的氧化钇，约1.5％至约5.5％的二氧化硅，余量为氮化硅，其密度为至少约99％的理论密度。

5. 发明授权

US4788049A Method for controlling the crystal morphology of silicon nitride 失效
标题翻译：控制氮化硅晶体形态的方法
公开(公告)号：US4788049A
公开(公告)日：1988-11-29
申请号：US842597
申请日：1986-03-21
申请人： Robert A. Long , Harrison Shallenberger , Dale E. Wittmer
发明人： Robert A. Long , Harrison Shallenberger , Dale E. Wittmer
IPC分类号： C01B21/068 , C30B25/00 , C01B33/06
CPC分类号： C01B21/068 , C30B25/005 , C30B29/38 , C01P2004/03 , C01P2004/10 , C01P2006/10
摘要： A method is disclosed for producing silicon nitride wherein the crystal morphology is controlled. The method involves heating a mixture consisting essentially of a chlorosilane and ammonia at a sufficient temperature for a sufficient time to produce a nitogen containing silane as an intermediate. The bulk density of the intermediate is controlled to less than about 0.1 g/cc to result in the silicon nitride having a crystal morphology which is essentially all fibrous, or the bulk density can be controlled to greater than about 0.3 g/cc to result in the silicon nitride having a crystal morphology which is essentially all equiaxial, or the bulk density can be controlled to between about 0.1 g/cc and about 0.3 g/cc to result in the silicon nitride having a crystal morphology which is a mixture of fibrous and equiaxial. The intermediate is then heated at a sufficient temperature for a sufficient time in a non-oxidizing atmosphere to produce the controlled crystal morphology silicon nitride.
摘要翻译：公开了一种用于生产氮化硅的方法，其中晶体形态被控制。该方法包括在足够的温度下将基本上由氯硅烷和氨组成的混合物加热足够的时间以产生含硝基的硅烷作为中间体。将中间体的体积密度控制为小于约0.1g / cc，导致氮化硅具有基本上全部是纤维状的晶体形态，或者堆积密度可以控制为大于约0.3g / cc，导致具有晶体形态的氮化硅基本上都是等轴的，或体积密度可以控制在约0.1g / cc和约0.3g / cc之间，以产生具有晶体形态的氮化硅，其是纤维和等轴线然后将中间体在足够的温度下在非氧化气氛中加热足够的时间以产生受控的晶体形态氮化硅。

6. 发明授权

US4717693A Process for producing beta silicon nitride fibers 失效
标题翻译：生产β氮化硅纤维的方法
公开(公告)号：US4717693A
公开(公告)日：1988-01-05
申请号：US922650
申请日：1986-10-24
申请人： Dale E. Wittmer
发明人： Dale E. Wittmer
IPC分类号： C30B25/00 , C04B35/58 , C01B21/068
CPC分类号： C30B25/005 , C30B29/38
摘要： A process is disclosed for producing beta silicon nitride fibers. The process involves heating a green article of a silicon nitride based material in a furnace at a temperature of from about 1700.degree. C. to about 2000.degree. C. at a pressure of nitrogen gas of at least about 100 psig for a sufficient time to form silicon nitride fibers, the major portion of which are beta silicon nitride fibers. The heating step is carried out with the article covered with a cover made of silicon carbide or silicon nitride. Alternately, the article can be in a container of silicon nitride or silicon carbide and covered with the cover.
摘要翻译：公开了用于生产β氮化硅纤维的方法。该方法包括在约1700℃至约2000℃的温度下，在至少约100psig的氮气压力下在炉中加热氮化硅基材料的绿色制品足够的时间以形成氮化硅纤维，其主要部分是β氮化硅纤维。加热步骤是用由碳化硅或氮化硅制成的盖子覆盖的物品进行的。或者，制品可以在氮化硅或碳化硅的容器中并被盖覆盖。

7. 发明授权

US4650592A Self lubricating silicon nitride article 失效
标题翻译：自润滑氮化硅制品
公开(公告)号：US4650592A
公开(公告)日：1987-03-17
申请号：US737997
申请日：1985-05-28
申请人： Robert J. Dobbs , David E. Thomas , Dale E. Wittmer
发明人： Robert J. Dobbs , David E. Thomas , Dale E. Wittmer
IPC分类号： C04B35/584 , C04B41/47 , C04B41/50 , C04B41/82 , C04B41/87 , F16C33/04 , F16C33/00
CPC分类号： C04B41/009 , C04B35/584 , C04B41/478 , C04B41/5053 , C04B41/82 , C04B41/87 , F16C33/043
摘要： An article is disclosed comprising particles of a silicon nitride based material and a lubricating material, the lubricating material occupying interconnected spaces within the article, the spaces being at least about 3% by volume of the article.
摘要翻译：公开了一种包括氮化硅基材料和润滑材料的颗粒的物品，所述润滑材料占据制品内互连的空间，所述空间为制品的至少约3体积％。

8. 发明授权

US4283228A Low temperature densification of PZT ceramics 失效
标题翻译： PZT陶瓷的低温致密化
公开(公告)号：US4283228A
公开(公告)日：1981-08-11
申请号：US100340
申请日：1979-12-05
申请人： Relva C. Buchanan , Dale E. Wittmer
发明人： Relva C. Buchanan , Dale E. Wittmer
IPC分类号： C04B35/491 , C04B35/46 , C04B35/48
CPC分类号： C04B35/491
摘要： Addition of from about 0.1 to about 6.0% by weight of V.sub.2 O.sub.5 to (PZT)lead zirconate-lead titanate powder promotes rapid densification at temperatures below 1000.degree. C. and eliminates the need for PbO atmosphere control. Densification to greater than 98% of theoretical density is achieved with firing times as short as 1-5 minutes. Dielectric properties depend upon the amount of V.sub.2 O.sub.5 added and upon the microstructure developed, but in general are equivalent to those reported for conventional PZT compositions.
摘要翻译：添加约0.1至约6.0％（重量）的V 2 O 5至（PZT）锆酸铅 - 钛酸铅粉末在低于1000℃的温度下促进快速致密化，并且不需要PbO气氛控制。达到理论密度大于98％的致密度达到短至1-5分钟的发射时间。介电性质取决于添加的V2O5的量和微结构显影，但通常与传统PZT组合物报道的相当。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式