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1. 发明授权

US5135895A Non-oxide sintered ceramic fibers 失效
标题翻译：非氧化物烧结陶瓷纤维
公开(公告)号：US5135895A
公开(公告)日：1992-08-04
申请号：US644668
申请日：1991-01-23
申请人： Francis J. Frechette , Wolfgang D. G. Boecker , Carl H. McMurtry , Martin R. Kasprzyk
发明人： Francis J. Frechette , Wolfgang D. G. Boecker , Carl H. McMurtry , Martin R. Kasprzyk
IPC分类号： C04B35/622
CPC分类号： C04B35/62227 , Y10S264/19
摘要： A high temperature, preferably polycrystalline, ceramic fiber having a selectable diameter of between 1 and 200 microns. The fiber is stable in an inert atmosphere at a temperature above about 1700.degree. C. and is often stable even in air at a temperature above 1500.degree. C. The fiber comprises a sintered ceramic powder having a maximum particle size less than the diameter of the fiber and an average particle size less than 0.2 times the diameter of the fiber. The ceramic powder is also stable in an inert atmosphere at a temperature above about 1700.degree. C. At least 90% of the ceramic is selected from borides, nitrides, carbides, and silicides. The fiber is characterized by a smooth surface and is preferably out of round.The invention further comprises a textilable sinterable filament, comprising a flexible polymer matrix containing high temperature sinterable ceramic powder particles. The ceramic powder particles are selected from ceramic borides, nitrides, carbides, and silicides. The diameter of the filament is from 2 to 300 microns. The invention also comprises the method for making textilable filament by fiberizing a mixture of a polymer and a sinterable non-oxide fiber and the method wherein the high temperature ceramic fiber is prepared by sintering the textilable sinterable filament as previously described. The invention also includes composites containing such filaments.
摘要翻译：具有1至200微米的可选直径的高温，优选多晶陶瓷纤维。该纤维在惰性气氛中在高于约1700℃的温度下是稳定的，并且即使在高于1500℃的空气中也是稳定的。纤维包含烧结陶瓷粉末，其烧结陶瓷粉末的最大粒径小于纤维的平均粒径小于纤维直径的0.2倍。陶瓷粉末在高于约1700℃的惰性气氛中也是稳定的。至少90％的陶瓷选自硼化物，氮化物，碳化物和硅化物。纤维的特征在于光滑的表面，并且优选地不圆形。本发明还包括可弯曲的可烧结长丝，其包括含有高温可烧结陶瓷粉末颗粒的柔性聚合物基质。陶瓷粉末颗粒选自陶瓷硼化物，氮化物，碳化物和硅化物。长丝的直径为2至300微米。本发明还包括通过纤维化聚合物和可烧结非氧化物纤维的混合物来制造可弯曲的长丝的方法，以及如前所述通过烧结可熔化的可烧结长丝来制备高温陶瓷纤维的方法。本发明还包括含有这种长丝的复合材料。

2. 发明授权

US4908340A Non-oxide sintered ceramic fibers 失效
标题翻译：非氧化物烧结陶瓷纤维
公开(公告)号：US4908340A
公开(公告)日：1990-03-13
申请号：US74080
申请日：1987-07-16
申请人： Francis J. Frechette , Wolfgang D. G. Boecker , Carl H. McMurtry , Martin R. Kasprzyk
发明人： Francis J. Frechette , Wolfgang D. G. Boecker , Carl H. McMurtry , Martin R. Kasprzyk
IPC分类号： C04B14/38 , C04B35/622 , C22C49/00 , D01F1/10 , D01F6/46 , D01F6/76 , D01F9/10
CPC分类号： C04B35/63476 , C04B35/117 , C04B35/62272 , C04B35/62277 , C04B35/62281 , C04B35/62286 , C04B35/62635 , C04B35/6264 , C04B35/632 , C04B35/63408 , C04B35/6342 , C04B35/63488 , C04B35/645 , C04B35/803 , C04B35/806 , C04B2235/3206 , C04B2235/3225 , C04B2235/3232 , C04B2235/3813 , C04B2235/3821 , C04B2235/3826 , C04B2235/383 , C04B2235/3834 , C04B2235/3865 , C04B2235/524 , C04B2235/5244 , C04B2235/526 , C04B2235/5264 , C04B2235/5409 , C04B2235/5436 , C04B2235/5445 , C04B2235/6021 , C04B2235/604 , C04B2235/6562 , C04B2235/6567 , C04B2235/77 , Y10S264/19
摘要： A high temperature, preferably polycrystalline, ceramic fiber having a selectable diameter of between 1 and 200 microns. The fiber is stable in an inert atmosphere at a temperature above about 1700.degree. C. and is often stable even in air at a temperature above 1500.degree. C. The fiber comprises a sintered ceramic powder having a maximum particle size less than the diameter of the fiber and an average particle size less than 0.2 times the diameter of the fiber. The ceramic powder is also stable in an inert atmosphere at a temperature above about 1700.degree. C. At least 90% of the ceramic is selected from borides, nitrides, carbides, and silicides. The fiber is characterized by a smooth surface and is preferably out of round.The invention further comprises a textilable sinterable filament, comprising a flexible polymer matrix containing high temperature sinterable ceramic powder particles. The ceramic powder particles are selected from ceramic borides, nitrides, carbides, and silicides. The diameter of the filament is from 2 to 300 microns. The invention also comprises the method for making textilable filament by fiberizing a mixture of a polymer and a sinterable non-oxide fiber and the method wherein the high temperature ceramic fiber is prepared by sintering the textilable sinterable filament as previously described. The invention also includes composites containing such filaments.

3. 发明授权

US5252361A Protective coating for non-oxide sintered fibers generated by in situ chemical reaction 失效
标题翻译：通过原位化学反应产生的非氧化物烧结纤维的保护涂层
公开(公告)号：US5252361A
公开(公告)日：1993-10-12
申请号：US467592
申请日：1990-01-19
申请人： Francis J. Frechette , Wolfgang D. G. Boecker
发明人： Francis J. Frechette , Wolfgang D. G. Boecker
IPC分类号： C04B41/87 , C04B35/80 , C04B41/45 , C23C8/10 , C23C8/34 , C23C16/40 , D01F9/08 , D01F9/10 , D06M11/00 , D06M11/34 , D06M11/79 , D06M11/81 , D06M101/00 , C23C16/00
CPC分类号： C04B41/009 , C04B35/80 , C04B41/4584 , C23C16/40 , C23C8/10 , C23C8/34 , B22F2998/00
摘要： A glassy coated sintered non-oxide ceramic fiber produced by an in situ oxidation chemical reaction. A process to produce a protective glassy coating on ceramic fibers by heating the non-oxide ceramic fibers in the presence of boron and atmosphere containing oxygen.
摘要翻译：通过原位氧化化学反应生产的玻璃状烧结非氧化物陶瓷纤维。通过在硼和含氧气氛的存在下加热非氧化物陶瓷纤维，在陶瓷纤维上产生保护性玻璃状涂层的方法。

4. 发明授权

US4701427A Sintered silicon carbide ceramic body of high electrical resistivity 失效
标题翻译：烧结碳化硅陶瓷体电阻率高
公开(公告)号：US4701427A
公开(公告)日：1987-10-20
申请号：US789066
申请日：1985-10-17
申请人： Wolfgang D. G. Boecker , Laurence N. Hailey , Carl H. McMurtry
发明人： Wolfgang D. G. Boecker , Laurence N. Hailey , Carl H. McMurtry
IPC分类号： C04B35/56 , C04B35/565 , H01B3/12 , H01L23/14 , H01L23/15 , C04B35/52 , B29C67/00 , F22B9/04
CPC分类号： H01L23/15 , C04B35/565 , H01L2924/0002
摘要： Sintered silicon carbide body having a D.C. electrical resistivity of at least 10.sup.8 Ohm cm at 25.degree. C., a density of at least 2.95 g/cm.sup.3 is formed upon sintering in a nitrogenous atmosphere at a temperature of about 2250.degree. C. or greater, a shaped body composed essentially of carbon or carbon source material in amount sufficient to provide up to 2.5 percent uncombined carbon; from about 0.4 to about 2.0 percent boron carbide; up to 25 percent of temporary binder and a balance of silicon carbide which is predominantly alpha-phase. The shaped body may additionally include other sintering aids such as BN or Al without destruction of desired high electrical resistivity.
摘要翻译：在25℃的DC电阻率为至少108欧姆厘米的烧结碳化硅体上，在约2250℃或更高的温度下在含氮气氛中烧结时形成至少2.95克/厘米3的密度，基本上由碳或碳源材料组成的成形体，其量足以提供高达2.5％的未组合的碳; 约0.4至约2.0％的碳化硼; 高达25％的临时粘合剂和主要是α相的碳化硅的平衡。成形体可另外包括其它烧结助剂如BN或Al，而不破坏所需的高电阻率。

5. 发明授权

US4695294A Vibratory grinding of silicon carbide 失效
标题翻译：碳化硅振动研磨
公开(公告)号：US4695294A
公开(公告)日：1987-09-22
申请号：US722272
申请日：1985-04-11
申请人： Tadeusz M. Korzekwa , Carl H. McMurtry , Wolfgang D. G. Boecker
发明人： Tadeusz M. Korzekwa , Carl H. McMurtry , Wolfgang D. G. Boecker
IPC分类号： B02C17/14 , B02C17/20 , B24D3/02
CPC分类号： B02C17/20
摘要： A method for reducing the particle size of an initial silicon carbide powder to a milled powder having an average particle size of below 1 micron but greater than an average of about 0.2 micron, without grinding media contamination. The method comprises milling the larger particles in a vibratory mill in the presence of sintered silicon carbide media comprising silicon carbide pellets having both curved and flat surfaces and a maximum dimension of from about 0.5 to 5 centimeters. The grinding occurs in the presence of a fluid, preferably a liquid, for a sufficient time and at a sufficient vibrational energy to obtain said milled powder having such smaller average particle size. At least 90% of the pellets in the silicon carbide media have a specific gravity (density) greater than 3.05 g/cm.sup.3.The invention includes the unique media, which may be used for various grinding operations, and includes unique milled powders. One of the unique powders has particles which have an average length to width ratio of greater than 2.5. Another of the unique powders is black silicon carbide containing from 200 to 2,000 parts per million of aluminum in solid solution.
摘要翻译：一种将初始碳化硅粉末的粒度降低到平均粒度小于1微米但大于约0.2微米的研磨粉末的方法，而不研磨介质污染。该方法包括在烧结碳化硅介质的存在下在振动研磨机中研磨更大的颗粒，所述烧结碳化硅介质包括具有弯曲和平坦表面的碳化硅球粒和最大尺寸为约0.5至5厘米。研磨在流体存在下，优选液体发生足够的时间和足够的振动能，以获得具有如此较小的平均粒径的粉碎粉末。碳化硅介质中的至少90％的颗粒的比重（密度）大于3.05g / cm 3。本发明包括可用于各种研磨操作的独特介质，并且包括独特的研磨粉末。其中一种独特的粉末具有平均长宽比大于2.5的颗粒。另一种独特的粉末是在固体溶液中含有200至2,000份/百万份铝的黑色碳化硅。

6. 发明授权

US5298470A Silicon carbide bodies having high toughness and fracture resistance and method of making same 失效
$Silicon carbide bodies having high toughness and fracture resistance and method of making same$
标题翻译：具有高韧性和耐断裂性的碳化硅体及其制造方法
公开(公告)号：US5298470A
公开(公告)日：1994-03-29
申请号：US960178
申请日：1992-10-09
申请人： Kai Y. Chia , Wolfgang D. G. Boecker , Roger S. Storm
发明人： Kai Y. Chia , Wolfgang D. G. Boecker , Roger S. Storm
IPC分类号： C04B35/565 , C04B35/575 , C04B35/56
CPC分类号： C04B35/565 , C04B35/575
摘要： A sintered silicon carbide ceramic body preferably produced from a uniform mixture comprising from about 82 percent to about 99.4 percent by weight silicon carbide, from about 0.5 percent to about 10 percent by weight of a nitrogen containing aluminum compound and from about 0.1 to about 8 percent of a rare earth oxide, both reacted with oxygen, wherein said sintered ceramic body has a density greater than 90% percent of theoretical and a fracture toughness, as measured by a single edge notched beam test, of more than 7 MPam.sup.1/2 and method of making the same.
摘要翻译：优选由均匀混合物制备的烧结碳化硅陶瓷体，其包含约82重量％至约99.4重量％的碳化硅，约0.5重量％至约10重量％的含氮化合物和约0.1至约8重量％的稀土氧化物都与氧反应，其中所述烧结陶瓷体的密度大于理论值的90％，通过单边缘切割梁试验测得的断裂韧性大于7Mamam 1/2，和方法做同样的事情

7. 发明授权

US5002905A Hexagonal silicon carbide platelets and preforms and methods for making and using same 失效
标题翻译：六角形碳化硅片和预型件及其制造和使用方法
公开(公告)号：US5002905A
公开(公告)日：1991-03-26
申请号：US184994
申请日：1988-04-22
申请人： Wolfgang D. G. Boecker , Stephen Chwastiak , Tadeusz M. Korzekwa , Sai-Kwing Lau
发明人： Wolfgang D. G. Boecker , Stephen Chwastiak , Tadeusz M. Korzekwa , Sai-Kwing Lau
IPC分类号： C01B31/36 , C04B35/80 , C30B25/00
CPC分类号： B82Y30/00 , C01B31/36 , C04B35/806 , C30B25/00 , C30B29/60 , C01P2004/03 , C01P2004/22 , C01P2004/54 , C01P2004/61 , C01P2004/62 , C01P2004/64
摘要： Crystalline silicon carbide wherein at least 90 weight percent of the silicon carbide is formed from a plurality of hexagonal crystal lattices wherein at least 80 weight percent of the crystals formed from the lattices contain at least a portion of opposing parallel base faces separated by a distance of from 0.5 to 20 microns. The crystals may be in the form of separate particles, e.g. separate platelets, or may comprise an intergrown structure. The crystalline silicon carbide of the invention is produced by heating a porous alpha silicon carbide precursor composition comprising silicon and carbon in intimate contact to a temperature of from 2100.degree. C. to 2500.degree. C. in a non-reactive atmosphere. The materials are high performance materials finding use in reinforcing, high temperature thermal insulating, improvement of thermal shock resistance, and modification of electrical properties.
摘要翻译：结晶碳化硅，其中至少90重量％的碳化硅由多个六角晶格形成，其中至少80重量％的由晶格形成的晶体包含至少一部分相对的平行基面， 0.5至20微米。晶体可以是分开的颗粒的形式，例如，单独的血小板，或可以包括共生的结构。本发明的结晶碳化硅通过在非反应性气氛中加热包含硅和碳的多孔α碳化硅前体组合物在2100℃至2500℃的温度下紧密接触来制备。这些材料是用于增强，高温绝热，提高耐热冲击性和改善电性能的高性能材料。

8. 发明授权

US4981665A Hexagonal silicon carbide platelets and preforms and methods for making and using same 失效
公开(公告)号：US4981665A
公开(公告)日：1991-01-01
申请号：US185183
申请日：1988-04-22
申请人： Wolfgang D. G. Boecker , Stephen Chwastiak , Tadeusz M. Korzekwa , Sai-Kwing Lau
发明人： Wolfgang D. G. Boecker , Stephen Chwastiak , Tadeusz M. Korzekwa , Sai-Kwing Lau
IPC分类号： C01B31/36 , C30B25/00
CPC分类号： B82Y30/00 , C01B31/36 , C30B25/00 , C30B29/60 , C01P2004/03 , C01P2004/22 , C01P2004/54 , C01P2004/61 , C01P2004/62 , C01P2004/64
摘要： Crystalline silicon carbide wherein at least 90 weight percent of the silicon carbide is formed from a plurality of hexagonal crystal lattices wherein at least 80 weight percent of the crystals formed from the lattices contain at least a portion of opposing parallel base faces separated by a distance of from 0.5 to 20 microns. The crystals may be in the form of separate particles, e.g. separate platelets, or may comprise an intergrown structure. The crystalline silicon carbide of the invention is produced by heating a porous alpha silicon carbide precursor composition comprising silicon and carbon in intimate contact to a temperature of from 2100.degree. C. to 2500.degree. C. in a non-reactive atmosphere. The materials are high performance materials finding use in reinforcing, high temperature thermal insulating, improvement of thermal shock resistance, and modification of electrical properties.

9. 发明授权

US4693988A Single phase silicon carbide refractory 失效
$Single phase silicon carbide refractory$
标题翻译：单相碳化硅耐火材料
公开(公告)号：US4693988A
公开(公告)日：1987-09-15
申请号：US880708
申请日：1986-07-01
申请人： Wolfgang D. G. Boecker , Tadeusz M. Korzekwa
发明人： Wolfgang D. G. Boecker , Tadeusz M. Korzekwa
IPC分类号： C04B35/565 , C04B35/56
CPC分类号： C04B35/565
摘要： The present invention provides a method of pressureless sintering silicon carbide in which the silicon carbide starting material is in the form of a multimodal composition, or mixture, of coarse and submicron particles. The present sinterable silicon carbide mixtures consist of separate fractions of sized particles. Each fraction is present in amounts of from about 5 to about 75% by weight of the mixture, and more preferably from about 10 to about 65% by weight of the mixture. One fraction has a particle size ranging between about 0.21 mm (210 microns) to about 3.4 mm (3400 microns) and preferably the larger particles have a size less than about 2.4 mm. A second fraction has a particle size ranging between about 0.003 mm (3 microns) up to about 0.21 mm. A third fraction has a size less than 0.003 mm, but has an average size less than 1 micron. The present products are produced by sintering particulate silicon carbide in the presence of a sintering aid and a slight excess carbon. Generally, sintering temperatures range from about 1900.degree. C. to about 2300.degree. C. depending upon the sintering atmosphere.
摘要翻译：本发明提供了一种无压烧结碳化硅的方法，其中碳化硅原料是多峰组合物或混合物形式的粗亚微米颗粒。本发明的可烧结碳化硅混合物由大小分散的颗粒组成。每个级分的存在量为混合物的约5至约75重量％，更优选为混合物重量的约10至约65重量％。一个部分具有在约0.21mm（210微米）至约3.4mm（3400微米）之间的粒度，优选较大的颗粒具有小于约2.4mm的尺寸。第二部分具有在约0.003mm（3微米）至约0.21mm之间的粒度范围。第三部分具有小于0.003mm的尺寸，但平均尺寸小于1微米。本产品通过在烧结助剂和少量过量碳存在下烧结颗粒状碳化硅来制备。通常，烧结温度范围为约1900℃至约2300℃，这取决于烧结气氛。

10. 发明授权

US4932166A Inert autogenous attrition grinding 失效
标题翻译：惰性自体磨耗研磨
公开(公告)号：US4932166A
公开(公告)日：1990-06-12
申请号：US252751
申请日：1988-10-03
申请人： Wolfgang D. G. Boecker , Tadeusz Korzekwa , Lewis M. Koppel
发明人： Wolfgang D. G. Boecker , Tadeusz Korzekwa , Lewis M. Koppel
IPC分类号： B02C17/14 , B02C17/16 , B02C17/20 , B02C23/18 , C04B35/565
CPC分类号： B02C17/14 , B02C17/16 , B02C17/20 , B02C23/18 , C04B35/565
摘要： A method for grinding an oxygen sensitive ceramic material to a powder which comprises grinding an oxygen sensitive ceramic feed material having an average particle size of between 1 and 200 microns in a contamination free high energy autogenous attrition mill in non-oxidizing fluid in the presence of media for a sufficient time to obtain a specific surface area of at least 5 m.sup.2 /g and preferably at least 9 m.sup.2 /g. The media consists essentially of the same ceramic as the feed material is of high purity and has an average particle size of less than 4 mm and preferably less than 2.5 mm. the ground material may be further treated so that the average particle size is less than one micron and so that the greater than 97 numerical percent of the particles of the finished powder is smaller than 5 microns. The invention includes the finished powder.
摘要翻译：一种将氧敏感性陶瓷材料研磨成粉末的方法，该方法包括在非氧化性流体中的无污染的高能自生磨碎机中研磨平均粒度为1至200微米的氧敏感陶瓷进料，培养基足够的时间以获得至少5m 2 / g，优选至少9m 2 / g的比表面积。介质基本上由与原料高纯度相同的陶瓷组成，平均粒度小于4毫米，最好小于2.5毫米。可以进一步处理研磨材料，使得平均粒度小于1微米，使成品粉末的颗粒的大于97数值百分比小于5微米。本发明包括成品粉末。

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