Si Diamond Technology, Inc.

Vac-Tec Systems, Inc.

Joseph D Evans

Mark S Hammond

Single hard particles or single point cutting tools having the particles bonded thereto are coated with a modulated or layered composition of transition metal compounds or with titanium compounds to decrease mechanical failure of the particles. Titanium and zirconium nitrides may be used to form the modulated composition. Total thickness of the coatings is in the range from about 0.5 micrometer to about 30 micrometers. Individual layers of varying composition have a thickness in the range from about 0.5 nanometers to about 30 nanometers.

Diamond cutting tools

Grinding tools are provided having a composite working surface with a metal bonding material coated with a modulated composition of transition metal compounds. Titanium nitride and zirconium nitride are suitable compounds. A manufacturing method for such grinding tools is also provided, employing cathodic arc deposition with transition metal compounds being formed from arcs of transition metal cathodes and a reactive gas.

Coated grinding tool

A process for making an article comprising a substrate, a first coating on the surface of said substrate of a thin, hard coated metal compound, and a second coating on the surface of said first coat of a thin uniform conformal polymeric material.

Growing community of inventors

Lafayette, CO, United States of America

Joseph D Evans