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1. 发明授权

US5296311A Silicon carbide reinforced reaction bonded silicon carbide composite 失效
标题翻译：碳化硅增强反应结合碳化硅复合材料
公开(公告)号：US5296311A
公开(公告)日：1994-03-22
申请号：US852589
申请日：1992-03-17
申请人： Carl H. McMurtry , Sa-Kwing Lau , Gajawalli V. Srinivasan , Stephen Chwastiak
发明人： Carl H. McMurtry , Sa-Kwing Lau , Gajawalli V. Srinivasan , Stephen Chwastiak
IPC分类号： C04B35/573 , C04B35/628 , C04B35/80 , B32B18/00
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 provides silicon carbide fiber-reinforced, reaction-bonded silicon carbide composites suitable for high temperature applications in which the silicon carbide fiber is coated with AlN, BN or TiB.sub.2. The composites offer superior fracture toughness which is ascribed to fiber pullout. The invention also includes a process for making the composites.
摘要翻译：本发明提供碳化硅纤维增强的反应粘合碳化硅复合材料，其适用于碳化硅纤维被AlN，BN或TiB2涂覆的高温应用。复合材料提供优异的断裂韧性，这归因于纤维拔出。本发明还包括制备复合材料的方法。

2. 发明授权

US5817432A Silicon carbide reinforced reaction bonded silicon carbide composite 失效
公开(公告)号：US5817432A
公开(公告)日：1998-10-06
申请号：US698740
申请日：1996-08-16
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 , B32B17/00
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.

3. 发明授权

US5945062A Silicon carbide reinforced reaction bonded silicon carbide composite 失效
标题翻译：碳化硅增强反应结合碳化硅复合材料
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。

4. 发明授权

US5643514A Process for manufacturing a silicon carbide composition 失效
标题翻译：碳化硅组合物的制造方法
公开(公告)号：US5643514A
公开(公告)日：1997-07-01
申请号：US447148
申请日：1995-05-22
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 , C04B35/577
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。

5. 发明授权

US5871685A Method of burnishing brake pads 失效
标题翻译：抛光刹车片的方法
公开(公告)号：US5871685A
公开(公告)日：1999-02-16
申请号：US390534
申请日：1995-02-17
申请人： Stephen Chwastiak , Jens H. S. Lamba , Donald L. Burgoon
发明人： Stephen Chwastiak , Jens H. S. Lamba , Donald L. Burgoon
IPC分类号： C21D7/08 , F16D69/00 , B29C71/00
CPC分类号： F16D69/00 , C21D7/08 , F16D2250/0038 , Y10T29/471 , Y10T428/24355 , Y10T428/24967 , Y10T428/31 , Y10T428/31652
摘要： Provided is a fast and efficient method of burnishing a brake pad. The brake pad is contacted with a heat source having a power density greater than about 270 Mw/m.sup.2. Also provided is pre-burnished brake pad having an increased coefficient of friction.
摘要翻译：提供了一种快速有效的抛光刹车片的方法。制动片与功率密度大于约270Mw / m 2的热源接触。还提供了具有增加的摩擦系数的预抛光制动片。

6. 发明授权

US5202105A Method for making hexagonal silicon carbide platelets with the addition of a growth additive 失效
标题翻译：添加生长添加剂制备六方晶碳化硅血小板的方法
公开(公告)号：US5202105A
公开(公告)日：1993-04-13
申请号：US548044
申请日：1990-07-05
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。

7. 发明授权

US4756895A 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：US4756895A
公开(公告)日：1988-07-12
申请号：US899523
申请日：1986-08-22
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 , C30B29/64
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

US4209500A Low molecular weight mesophase pitch 失效
标题翻译：低分子量中间相沥青
公开(公告)号：US4209500A
公开(公告)日：1980-06-24
申请号：US838963
申请日：1977-10-03
申请人： Stephen Chwastiak
发明人： Stephen Chwastiak
IPC分类号： C10C3/02 , C01B31/02 , C10C3/00 , D01F9/12 , D01F9/145 , D01F9/15 , D01F9/155 , D01F9/14
CPC分类号： D01F9/15 , C01B31/02 , C10C3/002 , D01F9/145 , D01F9/155
摘要： A low molecular weight, anisotropic pitch consisting of essentially 100 percent mesophase and suitable for spinning into continuous filaments can be prepared by passing an inert gas through an isotropic carbonaceous pitch at a rate of at least 4.0 scfh. per pound of pitch while heating the pitch at a temperature of from about 380.degree. C. to about 430.degree. C. to produce mesophase and simultaneously agitating the pitch so as to produce a homogeneous emulsion of the mesophase produced and the remaining non-mesophase portion of the pitch, said heating and agitation being continued until the pitch has been essentially completely converted to mesophase and the emulsion has been transformed into an essentially single phase system. When examined under polarized light, the pitches of the present invention are seen to consist of a single phase which is essentially completely anisotropic. The fibers spun from such pitch are also essentially completely anisotropic and can be further processed to produce carbon and graphite fibers having a high Young's modulus of elasticity and high tensile strength.
摘要翻译：可以通过使惰性气体以至少4.0scfh的速率通过各向同性的碳质沥青来制备由基本上100％的中间相组成并适于纺丝成连续长丝的低分子量各向异性沥青。每磅沥青，同时在约380℃至约430℃的温度下加热沥青，以产生中间相，同时搅拌沥青，以产生所产生的中间相的均相乳液和剩余的非中间相部分所述加热和搅拌继续进行，直到沥青基本上完全转化为中间相，并且乳液已经转变成基本上单相系统。当在偏振光下检查时，可以看出本发明的间距由基本完全各向异性的单相组成。从这种沥青纺丝的纤维也基本上完全是各向异性的，并且可以进一步加工以生产具有高杨氏弹性模量和高拉伸强度的碳和石墨纤维。

10. 发明授权

US5693402A Brake pad which has been pre-burnished using a high intensity heat source 失效
标题翻译：使用高强度热源预磨光的刹车片
公开(公告)号：US5693402A
公开(公告)日：1997-12-02
申请号：US520394
申请日：1995-08-29
申请人： Stephen Chwastiak , Jens H. S. Lamba , Donald L. Burgoon
发明人： Stephen Chwastiak , Jens H. S. Lamba , Donald L. Burgoon
IPC分类号： C21D7/08 , F16D69/00 , B32B5/00
CPC分类号： F16D69/00 , C21D7/08 , F16D2250/0038 , Y10T29/471 , Y10T428/24355 , Y10T428/24967 , Y10T428/31 , Y10T428/31652
摘要： Provided is a pre-burnished brake pad that has been contacted with a heat source having a power in the range of 250 Mw/m.sup.2 to about 500 Mw/m.sup.2.
摘要翻译：提供了一种已经与功率在250Mwm / m 2至约500Mw / m 2范围内的热源接触的预抛光制动衬块。

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