Journal
SURFACE & COATINGS TECHNOLOGY
Volume 303, Issue -, Pages 41-47Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2016.03.022
Keywords
Annealing; Mechanical properties; Oxidation; Ta-Al-N
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Ta-Al-N coatings were prepared using reactive magnetron cosputtering on silicon substrates. The coatings with a high Ta content exhibited a face-centered-cubic structure, whereas the coating with a high Al content exhibited a near-amorphous phase. To determine the oxidation resistance of the Ta-Al-N coatings, annealing treatments were conducted in air at 600-800 degrees C Adding Al into a TaN structure increased the oxidation resistance to endure 8-h annealing at 600 degrees C. Moreover, the Ta35Al15N50 coating exhibited a superior oxidation resistance at 700 degrees C for 4 h. The material characteristics of the annealed Ta-Al-N coatings were examined through Auger electron spectroscopy and transmission electron microscopy and by using a nanoindentation tester. (C) 2016 Elsevier B.V. All rights reserved.
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