The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 23, 1999
Filed:
Jul. 07, 1997
Stephen Cuyler Bates, Glastonbury, CT (US);
Other;
Abstract
A method and system for fabricating porous polycrystalline diamond material whose volume is described by a dimension larger than 1 mm, with no upper limit on size. A net shape diamond part is fabricated by compacting small diamond particles into a mold and then performing chemical vapor deposition (CVD) growth of diamond on the particles until they are joined into a porous whole. The CVD growth of diamond is achieved by photofragmentation of vapor phase Fullerene, C.sub.60, molecules in the pores. C.sub.60 molecules are vaporized from solid C.sub.60 at a temperature of about 800.degree. C. The vapor diffuses into the voids between the diamond particles in the mold. The vapor is then subjected to intense illumination by a laser which causes the C.sub.60 molecules fragment. The deposition of these fragments causes diamond growth to occur on all surfaces around the pores between the particles. Continual replenishment of the C.sub.60 by the vapor source allows continuous deposition. The transparency of the diamond particles allows penetration of the laser illumination into the volume of the particles. After sufficient deposition and growth, diamond connections are made between the particles, making the entire mass a porous, single diamond entity.