Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Patent
1992-09-30
1993-12-14
Turner, A. A.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
428408, 4283073, 4283066, 4283122, B32B 900
Patent
active
052701140
ABSTRACT:
The present invention comprises an article formed from a plurality of diamond particles and non-diamond particles compatible with diamond deposition preformed into a desired shape. Each of the particles has first surface regions in contact with immediately adjacent other ones of the particles, and second surface regions spaced apart from the immediately adjacent other ones of said particles to define boundaries of inter-particle voids between the immediately adjacent ones of the particles. The voids are infiltrated with high thermal conductivity CVD diamond material continuously coating the second surface regions of the particles and comprising merged growth fronts from the second surface regions of individual immediately adjacent ones of the particles into the inter-particle voids. The high thermal conductivity CVD diamond material has an average crystallite size greater than about 15 microns, an intensity ratio of diamond- Raman-peak-to-photoluminescence background intensity greater than about 20, a maximum intensity of the diamond Raman peak in counts/sec divided by the intensity of photoluminescence at 1270 cm.sup.-1 greater than about 3, a Raman sp.sup.3 full width half maximum less than about 6 cm.sup.-1 and a diamond-to-graphite Raman ratio greater than about 25. The thermal conductivity of the CVD diamond materials is in excess of 17 Wcm.sup.-1 K.sup.-1.
REFERENCES:
patent: 4104441 (1978-08-01), Fedoseer et al.
patent: 4434188 (1984-02-01), Kamo et al.
patent: 4536442 (1985-08-01), Bovenkerk et al.
patent: 4554207 (1985-11-01), MacIver et al.
patent: 4988421 (1991-01-01), Drawl et al.
patent: 5009923 (1991-04-01), Ogata et al.
patent: 5015528 (1991-05-01), Pinneo
patent: 5037704 (1991-08-01), Nakai et al.
patent: 5082359 (1992-01-01), Kirkpatrick
Matsumoto, et al. "Chemical Vapor Deposition of Diamond from Methane-Hydrogen gas", Proc. 7th, ICVM, 1982, pp. 386-391.
Liou, et al. "Effect of oxygen in diamond deposition at low substrate temperatures", Appl. Phys. Lett., vol. 56, No. 29, Jan. 1990, pp. 437-439.
Morelli, et al., "Phonon-defect scattering high thermal conductivity diamond films", Appl. Phys. Lett., vol. 59, No. 17, Oct. 1991.
Matsumoto, et al. "Growth of diamond particles from methane-hydrogen gas", Journal of Materials Science, vol. 17, 1982, pp. 3106-3112.
Gardinier Clayton F.
Herb John A.
Pinneo John M.
Crystallume
D'Alessandro Kenneth
Turner A. A.
LandOfFree
High thermal conductivity diamond/non-diamond composite material does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High thermal conductivity diamond/non-diamond composite material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High thermal conductivity diamond/non-diamond composite material will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1703876