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

US5744411A Aluminum nitride sintered body with high thermal conductivity and its preparation 失效
标题翻译：具有高导热性的氮化铝烧结体及其制备方法
公开(公告)号：US5744411A
公开(公告)日：1998-04-28
申请号：US557025
申请日：1995-12-07
申请人： JunHong Zhao , Theresa A. Guiton , Yi-Hung Chiao , William Rafaniello , Noboru Hashimoto , Kyoji Tanaka , Susumu Kajita , Hiroyoshi Yoden
发明人： JunHong Zhao , Theresa A. Guiton , Yi-Hung Chiao , William Rafaniello , Noboru Hashimoto , Kyoji Tanaka , Susumu Kajita , Hiroyoshi Yoden
IPC分类号： C04B35/581 , H01L23/15 , H01L23/373 , C04B35/582
CPC分类号： C04B35/581 , H01L23/15 , H01L23/3731 , H01L2924/0002 , H01L2924/09701 , Y10S428/901
摘要： An aluminum nitride sintered product with a high thermal conductivity (at least 100 W/m.K) can be prepared at a sintering temperature of less than 1850.degree. C. (often less than 1650.degree. C.) using a sinterable combination of aluminum nitride powder with at least three sintering aids. The sintering aids include a source of a rare earth metal oxide, a source of an alkaline earth metal oxide, a boron source and, optionally, a source of aluminum oxide. The sinterable combinations may also be used to prepare cofired, multilayer substrates.
摘要翻译： PCT No.PCT / US94 / 04256 Sec。 371 1995年12月7日第 102（e）日期1995年12月7日PCT 1994年4月18日PCT PCT。公开号WO95 / 02563 日期1995年1月26日可以在小于1850℃（通常小于1650℃）的烧结温度下使用可烧结组合制备具有高导热性（至少100W / mK）的氮化铝烧结产品的至少三种烧结助剂的氮化铝粉末。烧结助剂包括稀土金属氧化物源，碱土金属氧化物源，硼源和任选的氧化铝源。可烧结组合也可用于制备共烧多层基材。

2. 发明授权

US5032242A Titanium diboride/boron carbide composites with high hardness and toughness 失效
标题翻译：二硼化钛/碳化硼复合材料具有高硬度和韧性
公开(公告)号：US5032242A
公开(公告)日：1991-07-16
申请号：US468497
申请日：1990-01-22
申请人： Arne K. Knudsen , William Rafaniello
发明人： Arne K. Knudsen , William Rafaniello
IPC分类号： B01J19/12 , C01B31/36 , C01B35/04 , C04B35/563 , C04B35/58
CPC分类号： C04B35/645 , B01J19/121 , C01B31/36 , C01B35/04 , C04B35/563 , C04B35/58071 , B01J2219/0894 , C01P2002/72 , C01P2004/02 , C01P2004/03 , C01P2004/04 , C01P2004/61 , C01P2004/62 , C01P2006/10 , C01P2006/90
摘要： A powder composition consisting essentially of an intimate mixture of boron carbide and titanium diboride, the mixture having an average particle size of less than about 0.5 micron, the particles being uniformly dispersed such that elemental analytical techniques show all discrete concentrations of boron carbide and titanium diboride to be less than or equal to about 0.5 micron in diameter, is disclosed. The powder is useful for making a densified ceramic composition comprising titanium diboride grains, having an average grain size of less than or equal to about 3 microns in diameter, uniformly dispersed with boron carbide grains, having an average grain size of less than about 5 microns in diameter. The densified composition exhibits improved hardness and toughness when compared wiht titanium diboride or boron carbide compositions. The powder can be prepared by a process comprising subjecting a stream of reactant gases consisting essentially of a volatile boron source, a volatile titanium source, a volatile carbon source, and a hydrogen source to an amount of laser radiation and at a pressure effective to convert at least a portion of the volatile boron, carbon and titanium sources to an intimate mixture of boron carbide and titanium diboride.
摘要翻译：基本上由碳化硼和二硼化钛的紧密混合物组成的粉末组合物，该混合物具有小于约0.5微米的平均粒度，所述颗粒均匀分散，使得元素分析技术显示出所有离散浓度的碳化硼和二硼化钛为直径小于或等于约0.5微米。该粉末可用于制造包含平均粒径小于或等于约3微米直径的二硼化钛颗粒的致密化陶瓷组合物，其平均颗粒尺寸小于约5微米，均匀分散于碳化硼颗粒中直径。当与二硼化钛或碳化硼组合物相比时，致密组合物显示出改进的硬度和韧性。粉末可以通过以下方法制备，该方法包括使基本上由挥发性硼源，挥发性钛源，挥发性碳源和氢源组成的反应物气流经受一定量的激光辐射并且在有效转化的压力挥发性硼，碳和钛的至少一部分源于碳化硼和二硼化钛的紧密混合物。

3. 发明授权

US4957884A Titanium diboride/boron carbide composites with high hardness and toughness 失效
标题翻译：二硼化钛/碳化硼复合材料具有高硬度和韧性
公开(公告)号：US4957884A
公开(公告)日：1990-09-18
申请号：US181852
申请日：1988-04-15
申请人： Arne K. Knudsen , William Rafaniello
发明人： Arne K. Knudsen , William Rafaniello
IPC分类号： B01J19/12 , C01B31/36 , C01B35/04 , C04B35/563 , C04B35/58
CPC分类号： C04B35/645 , B01J19/121 , C01B31/36 , C01B35/04 , C04B35/563 , C04B35/58071 , B01J2219/0894 , C01P2002/72 , C01P2004/02 , C01P2004/03 , C01P2004/04 , C01P2004/61 , C01P2004/62 , C01P2006/10 , C01P2006/90
摘要： A powder composition consisting essentially of an intimate mixture of boron carbide and titanium diboride, the mixture having an average particle size of less than about 0.5 micron, the particles being uniformaly dispersed such that elemental analytical techniques show all discrete concentrations of boron carbide and titanium diboride to be less than or equal to about 0.5 micron in diameter, is disclosed. The powder is useful for making a densified ceramic composition comprising titanium diboride grains, having an average grain size of less than or equal to about 3 microns in diameter, uniformly dispersed with boron carbide grains, having an average grain size of less than about 5 microns in diameter. The densified composition exhibits improved hardness and toughness when compared with titanium diboride or boron carbide compositions. The powder can be prepared by a process comprising subjecting a stream of reactant gases consisting essentially of a volatile boron source, a volatile titanium source, a volatile carbon source, and a hydrogen source to an amount of laser radiation and at a pressure effective to convert as least a portion of the volatile boron, carbon and titanium sources to an intimate mixture of boron carbide and titanium diboride.
摘要翻译：基本上由碳化硼和二硼化钛的紧密混合物组成的粉末组合物，该混合物具有小于约0.5微米的平均粒度，所述颗粒是均匀分散的，使得元素分析技术显示出所有离散浓度的碳化硼和二硼化钛为直径小于或等于约0.5微米。该粉末可用于制造包含平均粒径小于或等于约3微米直径的二硼化钛颗粒的致密化陶瓷组合物，其平均颗粒尺寸小于约5微米，均匀分散于碳化硼颗粒中直径。与二硼化钛或碳化硼组合物相比，致密组合物显示出改进的硬度和韧性。粉末可以通过以下方法制备，该方法包括使基本上由挥发性硼源，挥发性钛源，挥发性碳源和氢源组成的反应物气流经受一定量的激光辐射并且在有效转化的压力挥发性硼，碳和钛的至少一部分源自碳化硼和二硼化钛的紧密混合物。

4. 发明授权

US5340417A Process for preparing silicon carbide by carbothermal reduction 失效
标题翻译：通过碳热还原制备碳化硅的方法
公开(公告)号：US5340417A
公开(公告)日：1994-08-23
申请号：US720759
申请日：1991-06-28
申请人： Alan W. Weimer , William G. Moore , William Rafaniello , Raymond P. Roach
发明人： Alan W. Weimer , William G. Moore , William Rafaniello , Raymond P. Roach
IPC分类号： B01J8/00 , B01J8/12 , C01B31/36
CPC分类号： B01J8/12 , B01J8/0095 , B82Y30/00 , C01B31/36 , C01P2004/51 , C01P2004/61 , C01P2004/62 , C01P2004/64 , C01P2006/12 , C01P2006/80
摘要： A process for preparing silicon carbide by carbothermal reduction is disclosed. This process involves rapidly heating a particulate reactive mixture of a silica source and a carbon source to form a product which shows improved uniformity of crystal size. The product of this process can be used to form a densified part.
摘要翻译： PCT No.PCT / US90 / 00276 Sec。 371日期1991年6月28日 102（e）1991年6月28日PCT PCT 1990年1月11日PCT公布。出版物WO90 / 08105 1990年7月26日，公开了一种通过碳热还原制备碳化硅的方法。该方法包括快速加热二氧化硅源和碳源的颗粒状反应混合物以形成显示改善的晶体尺寸均匀性的产物。该过程的产物可用于形成致密部分。

5. 发明授权

US4804525A Producing boron carbide 失效
标题翻译：生产碳化硼
公开(公告)号：US4804525A
公开(公告)日：1989-02-14
申请号：US73035
申请日：1987-07-14
申请人： William Rafaniello , William G. Moore
发明人： William Rafaniello , William G. Moore
IPC分类号： C01B31/36 , C01B20060101
CPC分类号： C01B31/36
摘要： A method of producing submicron size boron carbide powder by heating a reactive mixture containing a boric oxide source and a carbon source at a high temperature for a sufficient length of time to form submicron particles of uniform size.
摘要翻译：一种通过在高温下加热含有氧化硼源和碳源的反应混合物足够长的时间来生产亚微米尺寸的碳化硼粉末以形成均匀尺寸的亚微米颗粒的方法。

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