US 8,663,359 B2 · Thick sintered polycrystalline diamond and sintered jewelry

Abstract

Methods of forming larger sintered compacts of PCD and other sintered ultrahard materials are disclosed. Improved solvent metal compositions and layering of the un-sintered construct allow for sintering of thicker and larger high quality sintered compacts. Jewelry may also be made from sintered ultrahard materials including diamond, carbides, and boron nitrides. Increased biocompatibility is achieved through use of a sintering metal containing tin. Methods of sintering perform shapes are provided.

Claims12

Dependent claims

A sintered compact for use in contact with the body comprising:

a sintered compact, the compact comprising:
a superhard material selected from the group consisting of diamond, cubic boron nitride, and carbide;
a sintering solvent metal, wherein the solvent metal comprises about 33 to 50 percent Sn, about 38 to 45 percent Co, about 10 to 19 percent Cr, and up to about 4 percent Mo by weight.

Dependencies are inferred from the claim text.

Facts

Application

12/823,464Filed 25 Jun 2010 · us provisional application

Priority

26 Jun 2009

Published

US 2011/0146348 A123 Jun 2011

Granted

4 Mar 2014

Term ends

Not estimatedThe source records don’t support an estimate.

Classification20 codes

A44C 27/002
Materials for manufacturing jewellery: metallic materials
B22F 3/14
Both compacting and sintering: simultaneously
B22F 7/02
Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting…
C22C 1/1094
Alloys containing non-metals: comprising an after-treatment

Thick sintered polycrystalline diamond and sintered jewelry

Life of this patent

Thick sintered polycrystalline diamond and sintered jewelry

Life of this patent

Abstract

Claims12