Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 685, Issue -, Pages 309-315Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.05.236
Keywords
Structural composites; Mechanical properties; Scanning electron microscopy (SEM); Heat treatment
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Funding
- National Natural Science Foundation of China [51172256, 51142010, 51372099]
- Doctoral Fund of University of Jinan [XBS1310]
- Program for Scientific research innovation team in Colleges and universities of Shandong Province
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Samples with various ratios of AlN/Al2O3 were fabricated via vacuum hot-pressing at 1700 degrees C under an applied pressure of 30 MPa for 90 min using Y2O3 as a sintering aid. The densification process, microstructural development, and formation of AlON phase from Al2O3 and AlN were investigated. Al2O3 additive can improve the physical and mechanical properties, and purification of the grain boundaries. AlON are almost formed completely when the content of Al2O3 is 80 vol%. The effects of composition, microstructure, and exposure time at 1400 degrees C on the oxidation behavior of AlN samples with different amounts of Al2O3 were investigated. The sample with 80 vol% alumina has the best oxidation resistance. (C) 2016 Elsevier B.V. All rights reserved.
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