公开(公告)号：US3929432A

公开(公告)日：1975-12-30

申请号：US39838373

申请日：1973-09-18

Applicant: DE BEERS IND DIAMOND

Inventor： CAVENEY ROBERT JOHN

IPC: B24D18/00 ,  C09K3/14 ,  B24D3/06 ,  C09C1/68

CPC classification number: C09K3/1445 ,  B24D18/00

Abstract: A diamond particle of the MD or the SD type having a composite coating comprising a thin continuous layer of titanium adjacent the diamond surface and a metal layer on the titanium layer, the metal of the metal layer being capable of forming an alloy with titanium under the influence of heat and the titanium/diamond interface being essentially free of chemical bond formation. The invention further provides a method of making a metal bonded abrasive device which includes the steps mixing the above described particles with a suitable metal matrix, heating the mixture to a temperature exceeding 500*C, maintaining the mixture at the elevated temperature for a period of from 10 to 30 minutes, and allowing the mixture to return to ambient conditions.

Abstract translation: MD或SD型金刚石颗粒具有包含邻近金刚石表面的薄的连续钛层和钛层上的金属层的复合涂层，金属层的金属能够与钛形成合金 热和钛/金刚石界面的影响基本上没有化学键形成。 本发明还提供一种制造金属粘合磨料装置的方法，其包括将上述颗粒与合适的金属基质混合的步骤，将混合物加热到超过500℃的温度，将混合物保持在升高的温度下一段时间 10至30分钟，并允许混合物回到环境条件。

公开(公告)号：US3879901A

公开(公告)日：1975-04-29

申请号：US39545773

申请日：1973-09-10

Applicant: DE BEERS IND DIAMOND

Inventor： CAVENEY ROBERT JOHN

IPC: B01J3/06 ,  C09K3/14 ,  C22C26/00 ,  B24D3/06

CPC classification number: C09K3/1445 ,  B01J3/062 ,  B01J2203/062 ,  B01J2203/0655 ,  B01J2203/066 ,  B01J2203/0685 ,  C22C26/00

Abstract: A compact comprising substantially graphite-free diamond particles having a continuous coating of titanium or molybdenum held in a matrix into which the titanium or molybdenum can diffuse. The matrix may for example, be an alloy selected from the group of Fe/Ni, Ni/Co/Cr/Fe, Fe/Si and Ti/Si alloys. The invention also provides a method of making such a compact by mixing the desired metal powders in suitable proportions with the coated diamond particles and compacting the mixture under pressure and temperature conditions in the diamond stable zone.

Abstract translation: 包含基本上不含石墨的金刚石颗粒的压块，其具有保持在钛或钼可以扩散到其中的基质中的钛或钼的连续涂层。 该基质可以是例如选自Fe / Ni，Ni / Co / Cr / Fe，Fe / Si和Ti / Si合金的合金。 本发明还提供了一种通过将所需的金属粉末与涂覆的金刚石颗粒混合并在金刚石稳定区的压力和温度条件下压实混合物来制备这种压块的方法。