Journal
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
Volume 37, Issue -, Pages 46-54Publisher
JOURNAL MATER SCI TECHNOL
DOI: 10.1016/j.jmst.2019.07.037
Keywords
Composite materials; Powder metallurgy; Sintering; Kinetics; Oxidation
Funding
- National Natural Science Foundation of China [51674093, 91860122]
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The purpose of this study is to investigate the oxidation behaviors of the TA15 titanium alloy and TiBw/TA15 composite with network microstructure in the temperature range of 873-1073 K. The results show that the oxidation kinetics of the TA15 titanium alloy and TiBw/TA15 composite follows different laws at various oxidation temperatures. Moreover, the effective activation energy Q for oxidation of the TA15 titanium alloy and TiBw/TA15 composite is determined to be 299 +/- 19.9 kJ/mol and 339 +/- 8.31 kJ/mol at the temperature of 973-1073K, respectively. The experimental achievements of oxidation kinetics and oxide scales formed in the test temperatures indicate that the TiBw/TA15 composite exhibits a higher oxidation resistance than TA15 titanium alloy. A schematic diagram of oxidation mechanism is established to further reveal the oxidation process for TiBw/TA15 composite at elevated temperatures. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
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