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Adhesion Evaluation of TiN and (Ti, Al)N Coatings on Titanium 6Al-4V

Published online by Cambridge University Press:  10 February 2011

R. D. James
Affiliation:
Materials Science and Engineering Department, North Carolina State University, Raleigh, NC 27695
D. L. Paisley
Affiliation:
Los Alamos National Laboratory, Los Alamos, NM 87545
K. A. Gruss
Affiliation:
Materials Science and Engineering Department, North Carolina State University, Raleigh, NC 27695
S. Parthasarthi
Affiliation:
Department of Engineering Science and Mechanics, Pennsylvania State University, University Park, PA 16802
B. R. Tittmann
Affiliation:
Department of Engineering Science and Mechanics, Pennsylvania State University, University Park, PA 16802
Y. Horie
Affiliation:
Department of Civil Engineering, North Carolina State University, Raleigh, NC 27695
R. F. Davis
Affiliation:
Materials Science and Engineering Department, North Carolina State University, Raleigh, NC 27695
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Abstract

To assess the adhesion of nitride coatings on metals, titanium 6% aluminum 4% vanadium substrates were coated with titanium nitride (TiN) using both cathodic arc and electron beam evaporation. Titanium aluminum nitride ((Ti, Al)N) was also deposited using cathodic arc evaporation. The interfaces of the coated samples were loaded in tension using a high speed shock wave which caused spallation either at the interface, in the coating or in the metal. Scanning acoustic microscopy analysis of the spalled samples detected delaminations at the interface in the samples deposited by cathodic arc evaporation. DYNA2D modeling of plate impact spallation experiments revealed the tensile adhesion strength for TiN deposited by both techniques was ≈ 2.0 GPa. The tensile adhesion strength for (Ti, Al)N was less than 1.5 GPa.

Type
Research Article
Copyright
Copyright © Materials Research Society 1996

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