• CN：11-2187/TH
  • ISSN：0577-6686
机械工程学报

›› 2005, Vol. 41 ›› Issue (9): 42-45.

• 论文 • 上一篇    下一篇

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高铝青铜Cu-14%Al-X合金在3.5%NaCl溶液中的腐蚀性能

路阳;袁利华;李文生;金玉花   

  1. 兰州理工大学有色金属新材料国家重点实验室
  • 发布日期:2005-09-15

CORROSION RESISTANCE OF Cu-14%Al-X Al-BRONZE ALLOY IN 3.5% NaCl SOLUTION

Lu Yang;Yuan Lihua;Li Wensheng;Jin Yuhua   

  1. State Key Laboratory of Advanced Non-ferrous Materials, Lanzhou University of Technology
  • Published:2005-09-15

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摘要： 通过静态浸泡腐蚀试验、X射线衍射分析(XRD)、扫描电镜(SEM)等方法研究了一种新型高铝青铜合金Cu-14%Al-X在3.5%NaCl溶液中的耐蚀性能及腐蚀行为。结果表明：在NaCl溶液中，Cu-14%Al-X合金有良好的耐蚀性能，当温度由20 ℃上升到80 ℃时，该材料的失重腐蚀速率由0.032 4 mm/a增加到了0.131 2 mm/a；合金中的(α+γ2)共析相和β’相、α相、K相相比，具有优先腐蚀倾向。腐蚀后试样表面Al、Mn元素的含量明显下降，Cu的含量明显增加，可见，合金发生的主要是脱铝腐蚀。

关键词: 腐蚀, 腐蚀速率, 铝青铜, 耐蚀性能, 脱铝

Abstract: The corrosion resistance and behavior of Cu-14%Al- X bronze in 3.5% NaCl solution has been investigated by using static immersing corrosion test, X-ray diffraction(XRD) and scanning electron microscope (SEM). The results indicated that the corrosion resistance of Cu-14%Al-X is perfect in 3.5% NaCl solution. With the temperature increases from 20 ℃ to 80 ℃, the corrosion rate rises from 0.032 4 mm/a to 0.131 2 mm/a. (a +g 2) phase suffers a dealuminization attack superior to b￠ phase,a phase and K phase. After corrosion, the contents of Al and Mn reduce obviously, while the content of Cu increases, which showed that the high Al-bronze suffers dealuminization corrosion.

Key words: Aluminum bronze alloy, Corrosion, Corrosion rate, Corrosion resistance, Dealuminization

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