期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 164, 期 14, 页码 C1027-C1034出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.1121714jes
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资金
- The Brussels Institute for Research and Innovation (IN-NOVIRIS)
The galvanostatic anodizing behavior of additive manufactured (AM) Al-Si10-Mg alloy was studied in H2SO4 electrolyte. The analysis of the voltage vs time response was complemented with a systematic characterization of the anodic oxide layer using a variety of techniques. In addition, a cast alloy of approximately the same chemical composition as that of the AM specimens was used as a reference in this study. Significant differences were found in the voltage-time characteristics of the samples analyzed. Besides, an anisotropic anodizing behavior was observed in the additive manufactured specimens. Due to the fine silicon microstructure present in the additive manufactured samples, the anodic oxide growth was much more obstructed than for the cast alloy. Nevertheless, even though the oxide layer was generally thinner in the AM samples for the same conditions and anodizing time, a much more continuous and uniform oxide layer was found in the additive manufactured specimens compared to the cast alloy. The porous structure was found to be greatly affected by the fine distribution of the silicon phase in the AM parts. (c) 2017 The Electrochemical Society. All rights reserved.
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