Method for preparing needle-like, fibrous or porous diamond, or

Details Method for preparing needle-like, fibrous or porous diamond, or Method for preparing needle-like, fibrous or porous diamond, or

1988-12-09

1990-09-18

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156345, 156644, 156646, 156654, 156655, 156657, 156662, 20419235, 252 791, 427 38, B44C 122, C03C 1500, C03C 2506

Patent

active

049575910

ABSTRACT:
A method for preparing needle-like, fibrous or porous diamond, or an aggregate thereof, which comprises subjecting diamond synthesized by a chemical vapor deposition method or a plasma-assisted vapor deposition method, or a film of such diamond, to plasma treatment in a gas stream containing oxygen, carbon dioxide, steam, hydrogen, a halogenated hydrocarbon or a halogenated carbon, or to thermal oxidation treatment in a gas stream containing oxygen, carbon dioxide or steam, for etching.

REFERENCES:
patent: 2806961 (1957-08-01), Horn
patent: 4339304 (1982-07-01), Grigoriev et al.
patent: 4816113 (1989-03-01), Shunpei
patent: 4832997 (1989-05-01), Balanzat et al.

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