| 硬铝合金剥蚀速率测试方法的研究 |
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| 引用本文： | 李荻,郭宝兰,张玉梅.硬铝合金剥蚀速率测试方法的研究[J].航空学报,1995,16(3):49-53. |
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| 作者姓名： | 李荻 郭宝兰 张玉梅 |
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| 作者单位： | 北京航空航天大学103 教研室,北京, 100083 |
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| 基金项目： | 国家自然科学基金,中科院腐蚀科学开放室资助课题 |
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| 摘 要： | ＡＳＴＭＧ３４－９０标准定性评定的剥蚀等级相一致，而且更准确、严谨。
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| 关 键 词： | 脱落 腐蚀 速率 测量 铝合金 |
| 收稿时间： | 1993-10-30 |
| 修稿时间： | 1994-05-27 |
THE MEASUREMENT OF THE EXFOLIATION RATE OF ALUMINIUM ALLOYS |
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| Li Di,Guo Baolan,Zhang Yumei.THE MEASUREMENT OF THE EXFOLIATION RATE OF ALUMINIUM ALLOYS[J].Acta Aeronautica et Astronautica Sinica,1995,16(3):49-53. |
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| Authors: | Li Di Guo Baolan Zhang Yumei |
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| Institution: | Faculty 103, Beijing University of Aeronautics and Astronautics, Beijing,100083 |
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| Abstract: | This paper has studied the exfoliation behaviour of LY12 and LC4 aluminium alloys in the EXCO-test solution, by employing the resistance method, surface immersion, and microanalysis with electronmicroscope. The variations of the exfoliation rate are indicated by the equivalent corrosion depth. The results agree with those obtained from the EXCO-test (ASTM G34-90). The quantitative methods employed in this paper are more precise and strict than the qualitative EXCO-test. The results show that the exfoliation developed step by step. At first, pitting appeared, then intergranular corrosion occurred, and finally the exfoliation followed. In the various corrosion stages, the variation rates of corrosion depth with immersion time were different. However, the variation of the corrosion depth with the immersion time is essentially logarithmic. |
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| Keywords: | shedding corrsion rates measurement aluminium alloys |
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