Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent
1983-03-31
1986-08-19
Derrington, James
Abrasive tool making process, material, or composition
Impregnating or coating an abrasive tool
51298, 51307, 51309, B24D 304, B24D 310
Patent
active
046067388
ABSTRACT:
Disclosed is a composite abrasive particle comprising a core abrasive crystal and a silicon carbide coating inherently bonded to substantially all of the exterior surfaces of said core crystal, said silicon carbide coating characterized by silicon carbide crystals having a random orientation substantially independent of the structure of the core crystal, the outer surface of the coating being conformationally irregular. Aggregates of the composite abrasive particles are interconnected by a matrix of silicon carbide which has an open structure. Preferred core abrasive crystals are diamond or cubic boron nitride. The composite abrasive particles preferably are made by infiltrating core crystals coated with non-diamond carbonaceous material with fluid silicon to produce a mass of core crystals bonded together by silicon carbide and elemental silicon, leaching substantially all of the silicon from the bonded mass with a silicon leaching agent, sub-dividing the resulting leached mass, and recovering the composite abrasive particles.
REFERENCES:
patent: 2137329 (1938-11-01), Boyer
patent: 2216728 (1940-10-01), Benner et al.
patent: 2561709 (1951-07-01), Norling
patent: 3203775 (1965-08-01), Cantrell
patent: 3385684 (1968-05-01), Voter
patent: 3520667 (1970-07-01), Taylor
patent: 3556839 (1971-01-01), Roy
patent: 3617347 (1971-11-01), Kuratomi
patent: 3664819 (1972-05-01), Sioui et al.
patent: 3745623 (1973-07-01), Wentorf et al.
patent: 3779727 (1973-12-01), Siqui et al.
patent: 3894673 (1975-07-01), Lowder et al.
patent: 3957461 (1976-05-01), Lindstrom et al.
patent: 4024675 (1977-05-01), Naidich et al.
patent: 4148894 (1979-04-01), Hillig et al.
patent: 4174971 (1979-11-01), Schrewelius
patent: 4184853 (1980-01-01), Otopkov et al.
patent: 4220455 (1980-09-01), St. Pierre et al.
patent: 4224380 (1980-09-01), Bovenkerk et al.
patent: 4238433 (1980-12-01), Hillig et al.
patent: 4242106 (1980-12-01), Morelak
Voice, "Coatings of Pyrocarbon and Silicon Carbide by Chemical Vapour Deposition", The Chemical Engineer, Dec. 1974.
Silicon Carbide-1973, Edited By Marshall, pp. 80-91, University of South Carolina Press, Columbia, South Carolina.
"Thermal Expansion-Nonmetallic Solids", Thermophysical Properties of Matter, Touloukin et al, TRPC Data Series, IFI/Phenum, New York-Washington, vol. 12, (1975), pp. 70-73 and vol. 13, (1977), pp. 19-21, 154-157 and 873-876.
Derrington James
General Electric Company
Schroeder Robert R.
LandOfFree
Randomly-oriented polycrystalline silicon carbide coatings for a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Randomly-oriented polycrystalline silicon carbide coatings for a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Randomly-oriented polycrystalline silicon carbide coatings for a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-392216