04606738 is referenced by 83 patents and cites 21 patents.

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.

Title
Randomly-oriented polycrystalline silicon carbide coatings for abrasive grains
Application Number
249756
Publication Number
4606738
Application Date
March 31, 1983
Publication Date
August 19, 1986
Inventor
Stephen C Hayden
Columbus
OH, US
Agent
Robert R Schroeder
Assignee
General Electric Company
NY, US
IPC
B24D 3/10
B24D 3/04
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