Journal
THEORETICAL AND APPLIED FRACTURE MECHANICS
Volume 70, Issue -, Pages 39-48Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.tafmec.2014.03.002
Keywords
Magnesium alloy; Epoxy coatings; 3.5 wt.% Na2SO4 solution; Corrosion fatigue; Fatigue crack initiation
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Funding
- National Natural Science Foundation, PR China [51001079, 21201129, 51208333, 51374151]
- National Nature Science Foundation of Shanxi Province [201101102002]
- China Postdoctoral Science Foundation [20100471586]
- Doctoral Fund of Ministry of Education of China [20091402110010]
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The epoxy coating was applied to improve the corrosion fatigue behavior of AZ31 magnesium alloy in 3.5 wt.% Na2SO4 solution. The bonding interface and the fracture surfaces were investigated by scanning electron microscope. And the compositions were analyzed by energy dispersive spectrometer after corrosion fatigue test. The corrosion fatigue limit of the coated specimens in 3.5 wt.% Na2SO4 solution was found to be improved. The strain matching ability between the epoxy coating and the substrate was the key to determining the fatigue crack initiation mechanism. (C) 2014 Elsevier Ltd. All rights reserved.
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