Journal
SURFACE & COATINGS TECHNOLOGY
Volume 205, Issue 23-24, Pages 5497-5501Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2011.06.020
Keywords
Er2O3 coating; Sol-gel; Microstructure; Anti-tritium permeation
Funding
- Chinese National Fusion Project for ITER [2010GB 109000]
- National Natural Science Foundation of China [50827204, 51072062]
- Research Fund for the Doctoral Program of Higher Education [20100142110016]
- Fundamental Research Funds for the Central Universities [2010ZD014]
- Ministry of Education of China [707044]
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As a promising candidate for anti-tritium permeation in fusion reactor, Er2O3 coatings have been paid much attention to recently. In this paper, starting from the precursors of Er(NO3)(3)center dot 5H(2)O and collodion. Er2O3 coatings with dense and homogeneous microstructure, were successfully prepared on a CLAM steel substrate by sol-gel method. Effect of processing parameters on the microstructure of Er2O3 coatings was explored in detail, and a set of processing parameters with good repetitiveness was established. The coating prepared with those parameters has a strong bonding to the steel substrate, and no peeling-off or crack could be observed in the coating even though it was thermally shocked for 60 cycles. (C) 2011 Elsevier B.V. All rights reserved.
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