Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 366, Issue 1, Pages 202-205Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2003.08.052
Keywords
superhard nanocomposites; (AlTi)N; thermal stability; spinodal decomposition
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An approximately one monolayer thin amorphous Si3N4 tissue, that is formed during the deposition of the nc-(Al1-xTix)N/a-Si3N4 superhard nanocomposite coatings with their optimum structure and hardness, efficiently avoids the decomposition and softening of the fcc-(Al1-xTix) metastable solution to the titanium-rich fcc-(Ti1-deltaAldelta)N and the wurtzite h-(AlN) up to a temperature of 1100degreesC. In the absence of the Si3N4 skin, the decomposition and softening of (Al1-xTix)N occurs at about 900 to 900degreesC. (C) 2003 Elsevier B.V. All rights reserved.
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