ABRASIVE DIAMOND COMPOSITE AND METHOD OF MAKING THEREOF

摘要

An abrasive diamond composite (60) formed form coated diamond particles (10) and a matrix material (22). The diamonds (12) have a protective coating (14) formed from a refractory material having a composition MCxNy, that prevents corrosive chemical attack of the diamonds by the matrix material (22). The abrasive diamond composite (60) may further include an infiltrant, such as a braze material (40). Alternatively, the abrasive diamond composite (60) may include a plurality of coated diamond particles (10) and a braze material (40) filling interstitial spaces between the coated diamond particles (10). Methods of making such abrasive diamond composites (60) are also disclosed.