AVS 47th International Symposium
    Surface Engineering Monday Sessions
       Session SE-MoA

Paper SE-MoA4
Oxidation Resistance of NiAl and NiAl-AlN Coatings Deposited by Magnetron Sputtering

Monday, October 2, 2000, 3:00 pm, Room 201

Session: Coatings for Extreme Environments: Wear Resistant, Lubricious, Anti-corrosive, High Temperature Coatings
Presenter: D. Zhong, Colorado School of Mines
Authors: D. Zhong, Colorado School of Mines
A.M. Peters, Los Alamos National Laboratory
J.J. Moore, Colorado School of Mines
G.G.W. Mustoe, Colorado School of Mines
J. Disam, Schott Glas, Germany
S. Thiel, Schott Glas, Germany
Correspondent: Click to Email
It is well known that NiAl exhibits excellent oxidation resistance and it shows improved cyclic oxidation resistance when NiAl-AlN composite is used. In this work, NiAl and NiAl-AlN coatings have been deposited from a NiAl compound target by using RF magnetron sputtering technique. The oxidation behaviors of NiAl and NiAl-AlN films were studied using a Netzsch Simultaneous Thermal Analyzer (STA409C) and Rutherford Backscattering Spectrometry (RBS). Their structures and microstructures were characterized using x-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM). It was shown that they are excellent oxidation resistant coatings. In this paper, their oxidation rates and mechanisms will be discussed together with their structure observations as well.