METHOD FOR COATING OF SUPERABRASIVE WITH METAL Russian patent published in 2005 - IPC

FIELD: method for coating of superabrasive, in particular, diamond particles, with metal for manufacture of cutting tools, such as grinding or milling tools, or plated diamond articles.

SUBSTANCE: method involves using coating forming metal powder including compound; providing thermal reduction of metal from compound by placing superabrasive particles and powder adapted for forming of coating together into inert atmosphere; heating superabrasive particles and said powder to temperature of from at least 500⁰C to temperature below superabrasive destruction temperature during time interval sufficient for effective deposition of metal layer onto at least one portion of surface of each superabrasive particle and providing chemical bonding between said particles and said powder; cooling said particles and said powder to temperature below temperature of reaction between superabrasive particles and powder; separating mixture for obtaining of product fraction in the form of superabrasive particles coated with metal and substantially free from coating forming powder and by-product fraction in the form of coating forming powder substantially free from superabrasive particles coated with metal. Described are superabrasive particles coated with metal by means of said method, method for manufacture of abrasive tool with the use of superabrasive particles coated with metal, abrasive tool comprising said particles, and plated product comprising constructional diamond part and equipped with metal layer chemically bonded with at least one portion of surface of said constructive part.

EFFECT: provision for obtaining of material having superthin coatings of chemically active metal uniformly covering superabrasive over the entire surface of substrate.

27 cl, 2 tbl, 8 ex