Multi-Layer Coating with Cubic Boron Nitride Particles

摘要

A physical configuration of multiple-layer coatings formed with at least one layer of coating containing cubic born nitride (cBN) particles with one or more layers in composite form containing cBN particles may have a thickness of each individual layer as thin as in the nanometer range, or as thick as in the range of a few microns and even up to tens of microns. The chemistry of the composite layer consists of any individual phase of (a) nitrides such as titanium nitride (TiN), titanium carbonitride (TiCN), and hafnium nitride (HfN); (b) carbides such as titanium carbide (TiC); and (c) oxides such as aluminum oxide (Al2O3) or any combination of the above phases, in addition to cBN particles. The coating or film can be stand-alone or on a substrate.

主权项

1. A multi-layer coated substrate, comprising:
a. a substrate, wherein the substrate comprises a substrate material chosen from the set consisting of carbides, ceramics, polycrystalline cubic boron nitride (PCBN) compacts, PCBN tips, cermets, carbon, and steels; b. a composite layer comprising cubic boron nitride (cBN) particles and particles comprising a second material, wherein the second material is chosen from the set consisting of nitrides, carbides, carbonitrides, borides, carbon, and oxides; and c. a ceramic layer adjacent to the composite layer, the ceramic layer comprising a third material chosen from the set consisting of nitrides, carbides, carbonitrides, borides, carbon, and oxides.