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    Method of producing cubic boron nitride
    91.
    发明授权
    Method of producing cubic boron nitride 有权
    立方氮化硼的制造方法

    公开(公告)号：US06508996B2

    公开(公告)日：2003-01-21

    申请号：US09777657

    申请日：2001-02-07

    Applicant: Kousuke Shioi ,  Eiji Ihara

    Inventor： Kousuke Shioi ,  Eiji Ihara

    IPC: C01B21064

    CPC classification number: C04B35/5831 ,  B01J3/062 ,  B01J2203/0645 ,  B01J2203/066 ,  B01J2203/068

    Abstract: hBN is converted to cBN by keeping it under temperature and pressure conditions within the range of stability of cubic boron nitride, in the presence of at least one compound selected from amides, imides and carbides of alkali metals and alkaline earth metals, as well as a silicon source and/or a boron source.

    Abstract translation: 在至少一种选自碱金属和碱土金属的酰胺，酰亚胺和碳化物的化合物存在下，将其保持在立方氮化硼的稳定性范围内的温度和压力条件下，将hBN转化为cBN，以及 硅源和/或硼源。

    Cemented and cemented/sintered superabrasive polycrystalline bodies and methods of manufacture thereof
    94.
    发明授权
    Cemented and cemented/sintered superabrasive polycrystalline bodies and methods of manufacture thereof 失效
    水泥和粘结/烧结超级磨料多晶体及其制造方法

    公开(公告)号：US5151107A

    公开(公告)日：1992-09-29

    申请号：US226049

    申请日：1988-07-29

    Applicant: Hyun S. Cho ,  Chien-Min Sung ,  Leo Merrill ,  Sy-Hwa Chen

    Inventor： Hyun S. Cho ,  Chien-Min Sung ,  Leo Merrill ,  Sy-Hwa Chen

    IPC: B01J3/06 ,  B24D3/08 ,  C09K3/14 ,  C22C26/00 ,  E21B10/56 ,  E21B10/567

    CPC classification number: E21B10/567 ,  B01J3/062 ,  B24D3/08 ,  C09K3/1445 ,  C22C26/00 ,  E21B10/5673 ,  B01J2203/062 ,  B01J2203/0645 ,  B01J2203/0655 ,  B01J2203/066 ,  B01J2203/0685 ,  B22F2999/00

    Abstract: Superabrasive cutting elements, backed compacts and methods for their manufacture are disclosed wherein metal coated superabrasive particles are cemented under HPHT conditions. The superabrasives bond to the metal of the coating and the metal coatings of adjacent particles bond to each other forming a matrix. A binding aid with thermal expansion characteristics close to that of the superabrasive particle can be infiltrated through or otherwise mixed with the particles to assist in the bonding between the metal coatings and to fill in voids. Catalyst and non-catalyst binding aids can also be used. Uncoated, smaller superabrasive particles can be interstitially dispersed among the coated particles to increase the superabrasive concentration and can self bond to form a cemented/sintered structure. Tungsten is a preferred metal coating and silicon is a preferred binding/sintering aid. The superabrasive can be diamond, cubic boron nitride, boron doped diamond or crushed, sintered polycrystalline aggregates. The free-standing cutting element can have a brazeable layer and the compact can be backed with, for example, cemented tungsten carbide. Free-standing cutting elements can be thermally stable up to 1,200.degree. C. Backed compacts can be thermally stable up to 1,100.degree. C.

    Abstract translation: 公开了超研磨切割元件，背衬压块及其制造方法，其中金属涂覆的超级磨料颗粒在HPHT条件下胶合。 超级磨料结合到涂层的金属上，相邻颗粒的金属涂层彼此结合形成基体。 具有接近超级磨料颗粒的热膨胀特性的粘合助剂可以渗入或与颗粒混合，以有助于金属涂层之间的粘合并填充空隙。 还可以使用催化剂和非催化剂结合助剂。 未涂覆的较小的超级磨料颗粒可以间隙地分散在涂覆的颗粒中以增加超研磨剂浓度并且可以自粘以形成胶结/烧结结构。 钨是优选的金属涂层，硅是优选的结合/烧结助剂。 超级磨料可以是金刚石，立方氮化硼，硼掺杂金刚石或粉碎，烧结多晶聚集体。 独立的切割元件可以具有可钎焊层，并且该压块可以例如用硬质合金碳化钨来支撑。 独立的切割元件可以在1200℃下热稳定。支撑压块可在1100℃下热稳定。

    Process for preparing polycrystalline CBN ceramic masses
    95.
    发明授权
    Process for preparing polycrystalline CBN ceramic masses 失效
    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

    Applicant: Francis R. Corrigan

    Inventor： Francis R. Corrigan

    IPC: C04B35/583 ,  B01J3/06 ,  C04B35/5831

    CPC classification number: C04B35/5831 ,  B01J3/062 ,  B01J2203/0645 ,  B01J2203/066 ,  B01J2203/0685

    Abstract: 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.

    Hard sintered compact for tools
    96.
    发明授权
    Hard sintered compact for tools 失效
    用于工具的硬质烧结体

    公开(公告)号：US5034053A

    公开(公告)日：1991-07-23

    申请号：US616599

    申请日：1990-11-21

    Applicant: Tetsuo Nakai ,  Mitsuhiro Goto

    Inventor： Tetsuo Nakai ,  Mitsuhiro Goto

    IPC: B01J3/06 ,  C22C26/00

    CPC classification number: C22C26/00 ,  B01J3/062 ,  B01J2203/0645 ,  B01J2203/066 ,  B01J2203/0685

    Abstract: A hard sintered compact for tools is a sintered compact obtained by super-high pressure sintering of 45-75% by vol. of cubic boron nitride powder and the remaining proportion of binder powder. The binder includes 5-25% by wt. of Al and the remaining proportion of at least one species of compounds represented by (Hf.sub.1-z M.sub.z) C, where M denotes elements of IVa, Va and VIa groups in a periodic table except for Hf, and 0.ltoreq.z.ltoreq.0.3 is satisfied. Because of this composition, improvements are made in strength, wear resistance and heat resisting property of the binder, and a hard sintered compact for tools having excellent strength and excellent wear resistance can be obtained.

    Cubic boron nitride manufacture
    99.
    发明授权
    Cubic boron nitride manufacture 失效
    立方氮化硼制造

    公开(公告)号：US4883648A

    公开(公告)日：1989-11-28

    申请号：US79259

    申请日：1987-07-29

    Applicant: Geoffrey J. Davies ,  Lesley K. Hedges ,  Stuart H. Robertson

    Inventor： Geoffrey J. Davies ,  Lesley K. Hedges ,  Stuart H. Robertson

    IPC: B01J3/06 ,  C30B9/00

    CPC classification number: C30B9/00 ,  B01J3/062 ,  C30B29/403 ,  B01J2203/0645 ,  B01J2203/066 ,  B01J2203/068 ,  Y10T117/1096

    Abstract: A method is provided for producing large cubic boron nitride crystals having the size of 0.1 carat or larger. The method involves providing a reaction vessel which contains CBN seed material (32), a CBN source (26) separated from the seed material and sandwiched between two masses (22) (24) of solvent/catalyst for CBN synthesis which is capable of melting under CBN synthetic conditions, and contains sufficient hexagonal boron nitride to saturate the catalyst with boron nitride when molten, the separation of seed material and source material being such that under the operating conditions of CBN synthesis a temperature gradient is created between the seed material and the source material with the seed material being located at a point near the minimum value of temperature of the temperature gradient and the source material being located at a point near the maximum value of temperature of the temperature gradient, placing that reaction vessel in the reaction zone of a high temperature/high pressure apparatus and subjecting the contents of the reaction vessel to conditions of temperature and pressure in the CBN stable region of the boron nitride phase diagram for a period of at least several hours and not more than 24 hours.

    Abstract translation: 提供了一种制备尺寸为0.1克拉或更大的大型立方氮化硼晶体的方法。 该方法包括提供包含CBN种子材料（32）的反应容器，与种子材料分离的CBN源（26），并夹在用于CBN合成的溶剂/催化剂的两个质量块（22）（24） 在CBN合成条件下，并且含有足够的六方氮化硼使熔融时氮化硼饱和，种子材料和源材料的分离使得在CBN合成的操作条件下，在种子材料和 源材料，其种子材料位于接近温度梯度温度的最小值的点处，并且源材料位于接近温度梯度的最大温度值的点，将该反应容器置于反应区 高温高压装置，使反应容器的内容物经受温度和压力的条件 在氮化硼相图的CBN稳定区域中保持至少数小时至不超过24小时的时间。

    Sintering method
    100.
    发明授权
    Sintering method 失效
    烧结法

    公开(公告)号：US4761262A

    公开(公告)日：1988-08-02

    申请号：US928220

    申请日：1986-10-08

    Applicant: Masaru Ogata ,  Shuichi Takeda

    Inventor： Masaru Ogata ,  Shuichi Takeda

    IPC: C04B35/64 ,  B01J3/06 ,  B22F3/08 ,  B22F3/14 ,  C04B35/645 ,  C04B35/65 ,  F27B17/00 ,  B22F1/00

    CPC classification number: B01J3/062 ,  B22F3/08 ,  B22F3/14 ,  C04B35/645 ,  C04B35/651 ,  B01J2203/0645 ,  B01J2203/066 ,  B01J2203/0685

    Abstract: A method for sintering a metal powder, a ceramic powder, or a mixture thereof accomplishes compact sintering of even a high melting substance by heating the powder at an elevated temperature for a short time under not less than 10,000 atmospheres of pressure. To attain the quick high-temperature heating under the ultrahigh pressure, a Thermit reaction is generated in an ultrahigh pressure generating apparatus which is provided with a gasket made of pyrophyllite and cylinders and anvils protected with heat insulators.For the purpose of preventing the Thermit reaction from inducing a reaction between the Thermit composition and the powder under treatment and the heater and ensuring electrical insulation of these components, barriers made of hexagonal boron nitride and/or tantalum are suitably disposed within the apparatus.

    Abstract translation: PCT号PCT / JP86 / 00069秒。 371日期1986年10月8日第 102（e）中的日期1986年10月8日提交的PCT 1986年2月14日的PCT公布。 号WO86 / 04890的PCT公布。 日期8月28日，对于烧结金属粉末，陶瓷粉末，或它们的混合物1986.A方法通过短时间下不小于10,000大气压粉末在升高的温度下加热来完成，即使高熔点物质的紧凑烧结 的压力。 为了实现超高压力下快速高温加热，在其中设置有由叶蜡石和汽缸和砧与热绝缘体保护的垫圈超高压产生装置中产生铝热反应。 为了防止铝热反应从诱导铝热组合物和接受治疗的粉末和加热器之间的反应，并确保这些部件的电绝缘的目的，由六方氮化硼和/或钽的屏障适当地设置在该装置内。

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