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

US5560754A Reduction of stresses in the polycrystalline abrasive layer of a composite compact with in situ bonded carbide/carbide support 失效
标题翻译：通过原位结合的碳化物/碳化物支撑减少复合材料的多晶磨料层中的应力
公开(公告)号：US5560754A
公开(公告)日：1996-10-01
申请号：US489877
申请日：1995-06-13
申请人： David M. Johnson , Francis R. Corrigan
发明人： David M. Johnson , Francis R. Corrigan
IPC分类号： B24D3/00 , B01J3/06 , B22F7/06 , B24D3/06 , C04B35/645 , C04B37/00
CPC分类号： B24D3/06 , B01J3/062 , B22F7/06 , C04B35/645 , C04B37/006 , B01J2203/062 , B01J2203/0645 , B01J2203/0655 , B01J2203/066 , B01J2203/0685 , C04B2237/123 , C04B2237/124 , C04B2237/125 , C04B2237/127 , C04B2237/36
摘要： The present invention is directed to polycrystalline diamond and cubic boron nitride (CBN) composite compacts and a method of making the same under high temperature/high pressure (HP/HT) processing conditions, and more particularly to HP/HT polycrystalline composite compacts having reduced abrasive layer stresses. The method of the invention involves making a metal carbide supported polycrystalline composite compact under conditions of high pressure and high temperature (HP/HT) in an HP/HT apparatus by the following steps:(a) placing within an enclosure a mass of abrasive particles, a first mass of metal carbide support material adjacent said abrasive particles, and a second mass of metal carbide support material adjacent said first mass with a layer of brazing filler alloy having a liquidus above about 700.degree. C. between said first and second masses;(b) subjecting said enclosure to said HP/HT conditions for a time sufficient to form a composite compact wherein said first carbide support is bonded to said second carbide support; and(c) recovering said composite compact.The resulting composite compact exhibits reduced abrasive table stresses such as result from the HP/HT processing conditions, and especially for composite compacts with thick carbide supports.
摘要翻译：本发明涉及多晶金刚石和立方氮化硼（CBN）复合压块及其在高温/高压（HP / HT）加工条件下制备相同的方法，更具体地涉及具有减少的HP / HT多晶复合材料研磨层应力。本发明的方法涉及通过以下步骤在HP / HT装置中在高压和高温（HP / HT）条件下制备金属碳化物负载的多晶复合压块（a）在外壳内放置一批磨料颗粒邻近所述磨料颗粒的第一质量的金属碳化物支撑材料和与所述第一块相邻的第二块金属碳化物支撑材料，所述第一块与所述第一和第二块之间具有高于约700℃的液相线的钎焊填充合金层; （b）使所述外壳经历所述HP / HT条件足够长的时间以形成复合压块，其中所述第一碳化物支撑件结合到所述第二碳化物支撑件; 和（c）回收所述复合压块。所得到的复合材料压实体表现出减少的磨料台应力，例如由HP / HT加工条件导致的，特别是对于具有厚的碳化物载体的复合材料。

2. 发明授权

US5106392A Multigrain abrasive particles 失效
标题翻译：多股磨料颗粒
公开(公告)号：US5106392A
公开(公告)日：1992-04-21
申请号：US669124
申请日：1991-03-14
申请人： David E. Slutz , Francis R. Corrigan
发明人： David E. Slutz , Francis R. Corrigan
IPC分类号： B22F1/02 , B01J3/06 , B22F7/00 , B24D3/00 , B24D3/06 , C04B35/52 , C04B35/58 , C04B35/5831 , C04B35/626 , C04B41/89 , C04B41/90 , C09C1/00 , C09C1/44 , C09C1/68 , C09K3/14 , C22C26/00 , C23C14/06 , C23C16/06 , C23C18/31
CPC分类号： C04B35/52 , B01J3/062 , B24D3/06 , C04B35/5831 , C04B35/62884 , C04B35/62894 , C04B35/62897 , C04B35/6303 , C04B35/645 , C09K3/1445 , C22C26/00 , B01J2203/0645 , B01J2203/066 , B01J2203/0685 , C04B2235/386 , C04B2235/427 , C04B2235/5436 , C22C2026/005
摘要： Multigrain abrasive particles and articles made therefrom are provided wherein the particles comprise fine granules of cubic boron nitride or diamond bound by a sintered matrix of one or more layers of active coating material that is chemically bonded to the underlying surface. These particles are obtained by sintering the coated granules under relatively mild conditions in comparison to those necessary to form monocrystalline abrasive particles of a similar size. In certain embodiments, the use of high pressure, high temperature equipment can be avoided. The particles have improved breakdown characteristics which can be controlled through a selection of the coating thickness, the type of coating and the size of the fine granules to be bonded. The process is well suited for the use of diamond powder produced from chemical vapor deposition processes.

3. 发明授权

US5043120A Process for preparing polycrystalline CBN ceramic masses 失效
标题翻译：制备多晶CBN陶瓷块的工艺
公开(公告)号：US5043120A
公开(公告)日：1991-08-27
申请号：US366943
申请日：1989-06-16
申请人： Francis R. Corrigan
发明人： Francis R. Corrigan
IPC分类号： C04B35/583 , B01J3/06 , C04B35/5831
CPC分类号： C04B35/5831 , B01J3/062 , B01J2203/0645 , B01J2203/066 , B01J2203/0685
摘要： A process for preparing sintered polycrystalline CBN/ceramic conjoint masses comprises forming a mixture of GBN and one or more of a ceramic material or metal which reacts with BN to form a ceramic material, subjecting said mixture to a high pressure and a high temperature conditons for inducing conversion of said GBN to CBN and inducing conversion of any of said metal to its corresponding metal ceramic, and forming said CBN/ceramic conjoint mass. The mixture of GBN and ceramic material or metal can be formed by a process selected from the group consisting of chemical vapor deposition, sol gel techniques, polymer pyrolysis techniques, and combustion synthesis.

4. 发明授权

US4536442A Process for making diamond and cubic boron nitride compacts 失效
标题翻译：制造金刚石和立方氮化硼压块的方法
公开(公告)号：US4536442A
公开(公告)日：1985-08-20
申请号：US488003
申请日：1983-05-02
申请人： Harold P. Bovenkerk , Paul D. Gigl , Francis R. Corrigan
发明人： Harold P. Bovenkerk , Paul D. Gigl , Francis R. Corrigan
IPC分类号： G02B1/02 , G02B7/00 , H01L31/0232 , H01L33/00 , H01S3/034 , B32B5/16
CPC分类号： H01S3/034 , G02B1/02 , G02B7/007 , H01L31/0232 , Y10T428/25 , Y10T428/30
摘要： Optical windows for hostile environments have been made from diamond and adamantine boron nitride compacts. The compact windows can comprise a single layer of large crystals bonded in a matrix. For example, they are made by exposing a sample of diamond (425-1700 micron) in a diamond and graphite matrix to high pressure-high temperature conditions (e.g., 50 Kbar at 1400.degree. C. to 85 Kbar at 1800.degree. C.).A typical boron nitride reaction zone assembly (cell) is shown in FIG. 1, in which carbon heater tube 1 is surrounded by tantalum foil sleeve 2. The sample of pyrolytic boron nitride 3 is disposed between carbon discs 5, tantalum foil discs 4 and hot pressed boron nitride plugs 6.The optical windows produced are capable of transmitting infrared light and visible light.
摘要翻译：用于恶劣环境的光学窗口由金刚石和金刚砂氮化硼压块制成。紧凑的窗户可以包括以矩阵结合的单层大晶体。例如，它们通过将金刚石和石墨基质中的金刚石样品（425-1700微米）暴露于高压高温条件（例如，在1400℃的50Kbar至1800K下的85Kbar）来制备。。图1中示出了典型的氮化硼反应区组件（电池）。 1，其中碳加热器管1被钽箔套筒2包围。热解氮化硼3的样品设置在碳盘5，钽箔片4和热压氮化硼插头6之间。所生产的光学窗口能够传输红外光和可见光。

5. 发明授权

US4045186A Method for producing large soft hexagonal boron nitride particles 失效
标题翻译：生产大型软六角形氮化硼颗粒的方法
公开(公告)号：US4045186A
公开(公告)日：1977-08-30
申请号：US747845
申请日：1976-12-06
申请人： Francis R. Corrigan
发明人： Francis R. Corrigan
IPC分类号： C01B21/064 , C30B9/00 , B01D9/02 , B01J17/04 , C01B35/00 , C01B21/06
CPC分类号： C01B21/064 , C30B29/38 , C30B9/00
摘要： Soft hexagonal boron nitride crystals of 200-600 microns platelet size are produced from crystals of less than fifty microns particle size by mixing the small crystals with Li.sub.3 N, simultaneously heating and pressurizing said mixture to a temperature and pressure in a restricted region of the graphitic (hexagonal) boron nitride (GBN) stable region of the pressure-temperature (P-T) phase diagram of boron nitride, cooling and depressurizing said mixture, and separating off the water soluble material present in the mixture to leave a residue of large crystals of boron nitride.
摘要翻译：通过将小晶体与Li 3 N混合，同时将所述混合物加热并加压到石墨的限制区域的温度和压力下，从小于50微米粒度的晶体产生200-600微米的小片尺寸的柔性六方晶系氮化硼晶体（六方晶系）氮化硼（GBN）氮化硼的压力 - 温度（PT）相图的稳定区域，对所述混合物进行冷却和减压，并分离存在于混合物中的水溶性材料，留下大量氮化硼晶体的残留物。

6. 发明授权

US5320988A Process for preparing polycrystalline CBN ceramic masses and resulting product 失效
标题翻译：制备多晶CBN陶瓷块及其所得产品的方法
公开(公告)号：US5320988A
公开(公告)日：1994-06-14
申请号：US985500
申请日：1992-12-01
申请人： Francis R. Corrigan
发明人： Francis R. Corrigan
IPC分类号： B01J3/06 , C04B35/5831 , C04B35/58
CPC分类号： B01J3/062 , C04B35/5831 , B01J2203/0645 , B01J2203/066 , B01J2203/0685
摘要： Disclosed is a process for preparing sintered polycrystalline CBN/ceramic conjoint masses in an HP/HT process which comprises subjecting a mixture of GBN and one or more of a ceramic material or metal which reacts with BN to form a ceramic material, to HP/HT conditions for inducing conversion of said GBN to CBN, inducing conversion of any of said metal to its corresponding metal ceramic, and forming said CBN/ceramic conjoint mass.
摘要翻译：公开了一种在HP / HT工艺中制备烧结的多晶CBN /陶瓷结块的方法，该方法包括将GBN和一种或多种与BN反应形成陶瓷材料的陶瓷材料或金属的混合物与HP / HT 诱导所述GBN转化为CBN的条件，诱导任何所述金属转化成其相应的金属陶瓷，以及形成所述CBN /陶瓷结合体。

7. 发明授权

US5106792A CBN/CBN composite masses and their preparation 失效
标题翻译： CBN / CBN复合材料及其制备
公开(公告)号：US5106792A
公开(公告)日：1992-04-21
申请号：US630916
申请日：1990-12-20
申请人： Francis R. Corrigan
发明人： Francis R. Corrigan
IPC分类号： B01J3/06 , C01B21/064 , C04B35/583 , C04B35/5831
CPC分类号： C04B35/5831
摘要： Broadly, the present invention is directed to a high pressure/high temperature (HP/HT) process for making polycrystalline CBN composite masses from graphitic boron nitride (GBN) in the substantial absence of catalytically-active material. The present invention specifically comprises subjecting a mixture of different structural forms of GBN to simultaneous conversion of each for making a CBN/CBN composite mass. Pyrolytic boron nitride/hexagonal boron nitride (PBN/HBN) mixtures are ideally suited for conversion into the inventive CBN/CBN composite masses of the present invention.
摘要翻译：概括地说，本发明涉及在基本上没有催化活性材料的情况下从石墨氮化硼（GBN）制造多晶CBN复合材料的高压/高温（HP / HT）工艺。本发明具体包括使不同结构形式的GBN的混合物同时转化以制备CBN / CBN复合材料。热解氮化硼/六方氮化硼（PBN / HBN）混合物理想地适用于转化成本发明的本发明的CBN / CBN复合材料。

8. 发明授权

US5015265A Process for making cubic boron nitride from coated hexagonal boron nitride, and abrasive particles and articles made therefrom 失效
标题翻译：由涂覆的六方氮化硼制造立方氮化硼的方法以及由其制成的研磨颗粒和制品
公开(公告)号：US5015265A
公开(公告)日：1991-05-14
申请号：US365883
申请日：1989-06-14
申请人： Francis R. Corrigan , David E. Slutz
发明人： Francis R. Corrigan , David E. Slutz
IPC分类号： B23B27/14 , B01J2/00 , B01J3/06 , B23P15/28 , B24D3/00 , C01B21/064 , C04B35/583 , C04B35/5831 , C04B41/87
CPC分类号： C04B35/5831
摘要： Abrasive particles and articles made from cubic boron nitride derived from coated hexagonal boron nitride which is substantially free of oxides and volatile contaminants. Polycrystalline CBN is prepared from HBN by removing oxide from the surface of HBN particles to form HBN particles having a substantially oxide-free surface. The HBN particles having a substantially oxide-free surface are coated with an agent which is capable of preventing re-oxidation of the surface of the HBN particles to form coated HBN particles in a substantially oxide-free state. The coated HBN particles in a substantially oxide-free state are then converted to a polycrystalline CBN by direct conversion of HBN to CBN. Coating agents include metals, metal carbides, metal nitrides and metal borides. A preferred coating agent is titanium carbide.

9. 发明授权

US4289503A Polycrystalline cubic boron nitride abrasive and process for preparing same in the absence of catalyst 失效
标题翻译：多晶立方氮化硼磨料及其制备方法，无催化剂
公开(公告)号：US4289503A
公开(公告)日：1981-09-15
申请号：US47656
申请日：1979-06-11
申请人： Francis R. Corrigan
发明人： Francis R. Corrigan
IPC分类号： C04B35/583 , B01J3/06 , C04B35/5831 , C09K3/14 , B24D3/28
CPC分类号： B01J3/062 , C04B35/5831 , C09K3/1418 , B01J2203/0645 , B01J2203/066 , B01J2203/0685
摘要： Cubic boron nitride has been made from powdered hexagonal boron nitride by a process which comprises vacuum firing of the HBN and conversion by high pressure-high temperature processing at 55-80 kilobars and 1600.degree. C. to the reconversion temperature.The high pressure reaction cell has a special design which prevents the entrance of impurities into the sample. This cell, referring to FIG. 2, comprises, for example, a carbon tube (8) enclosing concentric titanium sleeve (9). Within the cylinder defined by the tube and sleeve are: the HBN sample (4), carbon filler (3), shielding tantalum foil discs (2) and carbon end plugs (10).The vacuum firing is done at pressures of 10.sup.-5 --10.sup.-10 mm Hg, 1400.degree.-1900.degree. C., for 5 minutes--4 hours, and is believed to form a thin, free-boron coating on the HBN particles.The process works on both pyrolytic (turbostratic) and graphitic hexagonal boron nitride.Grinding grits formed by milling cubic boron nitride chunks recovered from the high pressure-high temperature process have resulted in higher grinding ratios than commercially available CBN.
摘要翻译：立方氮化硼已经由粉末状六方氮化硼制成，包括通过HBN的真空烧制和通过在55-80千磅和1600℃的高压高温处理转化为再转化温度的方法。高压反应池具有防止杂质进入样品的特殊设计。该单元参照图1。如图2所示，包括例如包围同心钛套筒（9）的碳管（8）。在由管和套筒限定的圆筒内是：HBN样品（4），碳填料（3），屏蔽钽箔盘（2）和碳端塞（10）。真空烧制在10-5-10-10mmHg，1400-1900℃的压力下进行5分-4小时，据信在HBN颗粒上形成薄的自由硼涂层。该方法在热解（涡旋）和石墨六方氮化硼两者中起作用。通过研磨由高压 - 高温工艺回收的立方氮化硼块形成的研磨砂粒导致比市售CBN更高的研磨比。

10. 发明授权

US4231980A Large boron nitride abrasive particles 失效
公开(公告)号：US4231980A
公开(公告)日：1980-11-04
申请号：US760853
申请日：1977-01-21
申请人： Francis R. Corrigan
发明人： Francis R. Corrigan
IPC分类号： B01J3/08 , C04B35/5831 , C04B35/58
CPC分类号： C04B35/5831 , B01J3/08 , B01J2203/066
摘要： Hard boron nitride particles of wurtzite and zincblende crystal structure of larger than 50 microns particle size are formed by subjecting recrystallized pyrolytic boron nitride to dynamic shock treatment to create pressures and temperatures in which the stable form of boron nitride has a wurtzite or zincblende crystal structure.

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