Journal
CORROSION SCIENCE
Volume 97, Issue -, Pages 1-6Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2015.04.017
Keywords
A. Superalloy; C. Intergranular corrosion; C. Reactor conditions
Funding
- Program of International S&T Cooperation, ANSTO-SINAP [2014DFG60230]
- National Natural Science Foundation of China [51371188]
- Science and Technology Commission of Shanghai Municipality [11JC1414900]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA02004210]
- National Young 1000 Talents Program of China
- Fundamental Research Funds for the Central Universities [2015GJHZ03]
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The corrosion behavior of a Ni-16Mo-7Cr-4Fe alloy was investigated in a tellurium (Te) vapor atmosphere at 800 degrees C. Te was identified via electron probe microanalysis at the grain boundary regions of the corroded alloy. The morphology, chemical composition, and crystalline structure of those areas were characterized in a transmission electron microscope. Chromium tellurides were observed at both grain boundaries and intergranular carbide-matrix interfaces. Based on the results, the mechanism of intergranular Te corrosion and its possible correlation with intergranular cracking is discussed. (C) 2015 Elsevier Ltd. All rights reserved.
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