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https://irlib.pccu.edu.tw/handle/987654321/36026
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| 題名: | Microstructures and corrosion behaviors of FeCoNi and CrFeCoNi equimolar alloys |
| 作者: | Tsau, CH (Tsau, Chun-Huei)
Lin, SX (Lin, Si-Xuan)
Fang, CH (Fang, Chien-Hao) |
| 貢獻者: | 化材系 |
| 關鍵詞: | FeCoNi
CrFeCoNi
Microstructure
Corrosion behavior
Activation energy |
| 日期: | 2017-01 |
| 上傳時間: | 2017-04-27 13:59:49 (UTC+8) |
| 摘要: | This investigation studies the microstructures of FeCoNi and CrFeCoNi alloys, and their polarization behaviors in 1 M deaerated H2SO4 and NaCl solutions. The results revealed that both FeCoNi and CrFe-CoNi alloys had an FCC granular structure, and their lattice constants were approximately 0.357 nm in as cast and as-annealed states. However, many HCP precipitates were observed in the matrix of CrFeCoNi alloy in both as-cast and as-annealed states. The corrosion resistance of FeCoNi alloy in 1 M H2SO4 solution was better than that of CrFeCoNi alloy. The corrosion resistances of both FeCoNi and CrFeCoNi alloys in 1 M H2SO4 solution were better than that of 304 stainless steel. The corrosion resistance of FeCoNi alloy in 1 M NaCl solution was better than that of CrFeCoNi alloy. The activation energies of FeCoNi and CrFeCoNi alloys were calculated using the Arrhenius equation; in 1 M H2SO4 solution, they were 28.5 and 20.8 kJ/mol, respectively; and in 1 M NaCl solution, they were 24.6 and 89.1 kJ/mol, respectively. (C) 2016 Elsevier B.V. All rights reserved. |
| 關聯: | MATERIALS CHEMISTRY AND PHYSICS 卷: 186 頁碼: 534-540 |
| 顯示於類別: | [化學工程與材料工程學系暨碩士班] 期刊論文
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