CBN-TiN Composite Coating Using a Novel Combinatorial Method—Structure and Performance in Metal Cutting
Author:
Russell William C.1, Malshe Ajay P.2, Yedave Sharad N.2, Brown William D.2
Affiliation:
1. Materials Research & Development, Valenite, Inc., Troy, MI 48084 2. Materials and Manufacturing Research Laboratories (MRL), Department of Mechanical Engineering, University of Arkansas, Fayetteville, AR 72701
Abstract
Cubic boron nitride coatings are under development for a variety of applications but stabilization of the pure CBN form and adhesion of films deposited by PVD and ion-based methods have been difficult. An alternate two-stage process comprising of ESC (electrostatic spray coating) and CVI (chemical vapor infiltration) has been developed for depositing CBN-TiN composite coatings for wear related applications. The process optimization yields fully dense films of CBN particles evenly dispersed in a continuous TiN matrix. Metal cutting tests (turning–4340 steel), using CBN-TiN composite coating thus developed, have shown an increase in tool life of three to seven times, depending on machining parameters, in comparison with CVD deposited TiN films.
Publisher
ASME International
Subject
Industrial and Manufacturing Engineering,Computer Science Applications,Mechanical Engineering,Control and Systems Engineering
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