Method of shaping a polycrystalline diamond body

Details Method of shaping a polycrystalline diamond body Method of shaping a polycrystalline diamond body

1995-07-12

1997-09-09

Dang, Thi

Etching a substrate: processes

Adhesive or autogenous bonding of two or more...

216 53, 216 96, B29D 1100, B29D 2500

Patent

active

056652526

ABSTRACT:
The method of shaping a polycrystalline diamond (PCD) body (exemplarily a wafer of CVD-PCD) utilizes our discovery that the rate and amount of diamond removal from a given region of a PCD body depends, for a given metal "etchant" at a given temperature, on the thickness of the etchant layer overlying the given region, with relatively larger etchant thickness being associated with relatively higher removal rate and amount. Exemplarily, the method can be used to substantially remove thickness variations and/or film curvature from as-produced PCD films. An exemplary metal that can be used in the practice of the invention is mischmetal. The metal etchant can be molten, partially molten or solid.

REFERENCES:
patent: 5328550 (1994-07-01), Graebner et al.
patent: 5382314 (1995-01-01), Jin
patent: 5458827 (1995-10-01), Holly
patent: 5486263 (1996-01-01), Dautremont-Smith et al.
"Diamonds Polished by Solid State Diffusion," by W. van Enckevort, Physics World, Aug. 1992, pp. 22-23.
"Thinning and Patterning of CVD Diamond Films by Diffusional Reaction," by S. Jin et al., Diamond and Related Materials, vol. 2 (1993), pp. 1038-1042.
"Massive Thinning of Diamond Films by a Diffusion Process," by S. Jin et al., Applied Physics Letters, vol. 60(16), Apr. 20, 1992, pp. 1948-1950.
"Shaping of Diamond Films by Etching with Molten Rare-Earth Metals," by S. Jin., Nature, vol. 362, Apr. 29, 1993, pp. 822-824.

Affiliated with

Also associated with

Rating

Method of shaping a polycrystalline diamond body does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of shaping a polycrystalline diamond body, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of shaping a polycrystalline diamond body will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-66977