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公开(公告)号：US07425297B2
公开(公告)日：2008-09-16
申请号：US10477833
申请日：2003-03-24
申请人： Chandan K. Saha , Aleksander J. Pyzik , Arthur R. Prunier, Jr. , Sten A. Wallin , Clifford S. Todd
发明人： Chandan K. Saha , Aleksander J. Pyzik , Arthur R. Prunier, Jr. , Sten A. Wallin , Clifford S. Todd
IPC分类号： C04B38/00
CPC分类号： C04B35/6365 , C04B26/285 , C04B35/185 , C04B35/63 , C04B35/64 , C04B38/0006 , C04B38/0022 , C04B2111/00793 , C04B2111/0081 , C04B2235/3217 , C04B2235/3218 , C04B2235/3418 , C04B2235/3463 , C04B2235/349 , C04B2235/36 , C04B2235/445 , C04B2235/658 , C04B2235/661 , C04B2235/72 , C04B2235/77 , C04B2235/78 , C04B2235/788 , C04B2235/79 , C04B2235/80 , C04B2235/96 , C04B35/195 , C04B14/047 , C04B14/06 , C04B14/10 , C04B14/303 , C04B38/00 , C04B40/0268 , C04B38/0074
摘要： A method of forming a porous mullite composition of acicular mullite grains having improved properties is described, where the mullite is formed at some time in the presence of a fluorine containing gas. For example, it has been discovered that improved properties may result from heating the mullite to a high temperature in an atmosphere selected from the group consisting of water vapor, oxygen, an inert gas or mixtures thereof or forming the mullite composition from precursors having an AL/Si ratio of at most 2.95.
摘要翻译： 描述了一种形成具有改善性能的针状莫来石晶粒的多孔莫来石组合物的方法，其中在含氟气体存在下在某个时间形成莫来石。 例如，已经发现，在由水蒸气，氧气，惰性气体或其混合物组成的组中选择的气氛中将莫来石加热到高温可以产生改进的性质，或者从具有AL的前体形成莫来石组合物 / Si比至多为2.95。
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公开(公告)号：US20080293564A1
公开(公告)日：2008-11-27
申请号：US12179963
申请日：2008-07-25
申请人： Chandan K. Saha , Aleksander J. Pyzik , Sten A. Wallin , Arthur R. Prunier, JR. , Clifford S. Todd
发明人： Chandan K. Saha , Aleksander J. Pyzik , Sten A. Wallin , Arthur R. Prunier, JR. , Clifford S. Todd
CPC分类号： C04B35/6365 , C04B26/285 , C04B35/185 , C04B35/63 , C04B35/64 , C04B38/0006 , C04B38/0022 , C04B2111/00793 , C04B2111/0081 , C04B2235/3217 , C04B2235/3218 , C04B2235/3418 , C04B2235/3463 , C04B2235/349 , C04B2235/36 , C04B2235/445 , C04B2235/658 , C04B2235/661 , C04B2235/72 , C04B2235/77 , C04B2235/78 , C04B2235/788 , C04B2235/79 , C04B2235/80 , C04B2235/96 , C04B35/195 , C04B14/047 , C04B14/06 , C04B14/10 , C04B14/303 , C04B38/00 , C04B40/0268 , C04B38/0074
摘要： A method of forming a porous mullite composition of acicular mullite grains having improved properties is described, where the mullite is formed at some time in the presence of a fluorine containing gas. For example, it has been discovered that improved properties may result from heating the mullite to a high temperature in an atmosphere selected from the group consisting of water vapor, oxygen, an inert gas or mixtures thereof or forming the mullite composition from precursors having an Al/Si ratio of at most 2.95.
摘要翻译： 描述了一种形成具有改善性能的针状莫来石晶粒的多孔莫来石组合物的方法，其中在含氟气体存在下在某个时间形成莫来石。 例如，已经发现，在选自水蒸汽，氧气，惰性气体或其混合物的气氛中，将莫来石加热到高温可以产生改进的性能，或者由具有Al的前体形成莫来石组合物 / Si比至多为2.95。
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公开(公告)号：US5358910A
公开(公告)日：1994-10-25
申请号：US122985
申请日：1993-09-20
IPC分类号： C08L83/04 , C01B31/36 , C04B35/571 , C04B35/632 , C04B38/00 , C04B38/06 , C04B35/56
CPC分类号： C04B38/0022
摘要： The preparation of porous ceramic bodies by sintering certain curable organopolysiloxanes filled with silicon carbide powders. This process is advantageous in that the green bodies have relative high strengths and thus can be easily handled and, if desired, machined before sintering.
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4.发明授权
公开(公告)号：US5436207A
公开(公告)日：1995-07-25
申请号：US164865
申请日：1993-12-10
IPC分类号： C01B31/36 , C04B35/565 , C04B35/626 , C04B35/571
CPC分类号： B82Y30/00 , C01B31/36 , C04B35/565 , C04B35/626 , C01P2004/50 , C01P2004/61 , C01P2004/62 , C01P2004/64 , C01P2006/10 , C01P2006/11 , C01P2006/12 , C01P2006/60 , C01P2006/80
摘要： Disclosed is a process for the formation of silicon carbide powder in which vaporized polysiloxanes are reacted and pyrolyzed in a single heating step to form the silicon carbide powder. The process is simple and inexpensive and yields powder having desirable characteristics.
摘要翻译： 公开了一种形成碳化硅粉末的方法，其中汽化的聚硅氧烷在单个加热步骤中反应和热解以形成碳化硅粉末。 该方法简单且便宜，并产生具有所需特性的粉末。
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公开(公告)号：US5283019A
公开(公告)日：1994-02-01
申请号：US55892
申请日：1993-05-04
IPC分类号： C08L83/04 , C01B31/36 , C04B35/571 , C04B35/632 , C04B38/00 , C04B38/06 , C04B35/56
CPC分类号： C04B38/0022
摘要： The preparation of porous ceramic bodies by sintering certain curable organopolysiloxanes filled with silicon carbide powders. This process is advantageous in that the green bodies have relative high strengths and thus can be easily handled and, if desired, machined before sintering.
摘要翻译： 通过烧结填充有碳化硅粉末的某些可固化的有机聚硅氧烷制备多孔陶瓷体。 该方法的优点在于，生坯具有相对高的强度，因此可以容易地处理，并且如果需要，在烧结之前加工。
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6.发明授权Highly densified bodies from organopolysiloxanes filled with silicon carbide powders 失效来自装有碳化硅粉末的有机聚硅氧烷的高致密化体
公开(公告)号：US4929573A
公开(公告)日：1990-05-29
申请号：US249036
申请日：1988-09-26
IPC分类号： C04B35/571 , C04B35/575 , C08K3/34 , C08L83/04
CPC分类号： C04B35/575 , C04B35/571
摘要： The preparation of highly densified ceramic bodies by the sintering of certain organopolysiloxanes filled with silicon carbide powders, and metal-containing sintering aids is described. Such highly densified ceramic bodies can be prepared by either a pressureless sintering process or a hot press sintering process. The compositions of this invention can be formed into desired shapes and then sintered to form ceramic, shaped bodies with high densities. One advantage of the present invention is that the green bodies have relative high strengths and thus can be easily handles and, if desired, machined before sintered. The organopolysiloxanes useful in this invention must yield a ceramic char which contains free or excess carbon in addition to carbon in the form of silicon carbide upon pyrolysis to elevated temperatures.
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7.发明授权Highly densified bodies from preceramic polysilazanes filled with silicon carbide powders 失效由陶瓷聚硅氮烷填充碳化硅粉末的高致密化体
公开(公告)号：US4962069A
公开(公告)日：1990-10-09
申请号：US268398
申请日：1988-11-07
申请人： Gary T. Burns , Chandan K. Saha , Ronald J. Keller
发明人： Gary T. Burns , Chandan K. Saha , Ronald J. Keller
IPC分类号： C04B35/571 , C04B35/575
CPC分类号： C04B35/575 , C04B35/571
摘要： The preparation of highly densified ceramic bodies by the sintering of certain preceramic polysilazanes filled with silicon carbide powders, metal-containing sintering aids, and, optionally, polysilazane curing agents is described. Such highly densified ceramic bodies can be prepared by either a pressureless sintering process or a hot press sintering process. The compositions of this invention can be formed into desired shapes and then sintered to form ceramic, shaped bodies with high densities. One advantage of the present invention is that the green bodies have relative high strengths and thus can be easily handled and, if desired, machined before sintering. The preceramic polysilazanes useful in this invention must yield ceramic chars which contains free or excess carbon in addition to carbon in the form of silicon carbide upon pyrolysis to elevated temperatures.
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8.发明授权Curable organopolysiloxanes filled with silicon carbide powders and highly densified sintered bodies therefrom 失效填充有碳化硅粉末的可固化的有机聚硅氧烷和由其高度致密化的烧结体
公开(公告)号：US4888376A
公开(公告)日：1989-12-19
申请号：US248884
申请日：1988-09-26
IPC分类号： C04B35/571 , C04B35/575 , C08K3/34 , C08L83/04
CPC分类号： C04B35/575 , C04B35/571
摘要： The preparation of highly densified ceramic bodies by sintering certain curable organopolysiloxanes filled with silicon carbide powders, metal-containing sintering aids, and organopolysiloxane curing agents described. Such highly densified ceramic bodies can be prepared by either a pressure-less or a hot press sintering process. The compositions of this invention can be formed into desired shapes and then sintered to form ceramic, shaped bodies with high densities. One advantage of the present invention is that the green bodies have relative high strengths and thus can be easily handled and, if desired, machined before sintering. The curable organopolysiloxanes useful in this invention must yield a ceramic char which contains free or excess carbon in addition to carbon in the form of silicon carbide upon pyrolysis to elevated temperatures.
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