铝及铝合金表面铬酸盐转化膜的组成和结构研究——Ⅰ.离子束分析、X光电子能谱和俄歇电子能谱测试

中国腐蚀与防护学报

1987, Vol. 7

Issue (1): 50-59

研究报告

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铝及铝合金表面铬酸盐转化膜的组成和结构研究——Ⅰ.离子束分析、X光电子能谱和俄歇电子能谱测试

倪红兵;张冠生;郁祖湛;赵国庆;董树忠

复旦大学化学系;复旦大学化学系;复旦大学化学系;复旦大学原子核科学系;复旦大学物理系

STUDIES ON THE COMPOSITION AND STRUCTURE OF THE CHROMATE CONVERSION COATINGS ON THE SURFACE OF ALUMINUM AND ITS ALLOY Ⅰ. AN RBS. ERD. XPS. AND. AES. STUDY

NiHongbin ZhangGuanshen YuZuzhan ZhaoGuoching~* DongShuzhong~(**)(Department of Chemistry; Fudan University) Department of Nuclear Science; Fndan University Department of Physics; Fudan University

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摘要: 本文报道了用离子束分析(RBS和ERD方法)、X光电子能谱(XPS)和俄歇电子能谱(AES)测试方法对铝及铝合金不同基材表面经不同铬酸处理液处理所得的铬酸盐转化膜测定分析的结果。转化膜主要由三价铬化合物CrOOH·nH_2O组成,六价铬只存在于转化膜的表面层。转化膜中含有少量氟及铝化合物,在含有[Fe(CN)_6]~(3-)的铬酸处理液所得的转化膜中还含有铁氰化物。

Abstract：The composition and structure of chromate couversion coatings on aluminum and its alloy were investigated by means of ion beam analysis(RBS, ERD), XPS, AES, IR, X-ray diffraction and DTA.The coatings studied in this paper were obtained from the following solutions: 1~#-CrO_3 4.5g/l, NaF 1.1 g/l, K_3Fe(CN)_6 0.6g/l, pH=1.8; 2~#-CrO_3 3.7g/l, NaF 1.2g/l, Na_2Cr_2O_7 3.2g/l, pH=1.9。The test specimens were sheets (L_2-Y and Ly_(12)-C_2).It was found by RBS and ERD that the main components Of the chromate conversion coatings Cr, O'and H were uniformly distrbuted. Depending on the conditions of treatment, the range of the atomic ratio of these elements (Cr: O: H) in the coatings was as follows:N_t~((Cr)):N_t~((O)):N_t~((H))=1:(2.0～2.3):(1.0～1.6).The main part of these coatings possibly consisted of CrOOH·nH_2O.The relative amounts of Cr(Ⅲ), Cr(Ⅵ), F, Fe, and N were determined with x-ray photoelectron spectrometer model ESCALAB (5) and Auger leectron spectroscope model PHI 550.The depth profile indicates that the Cr(Ⅵ) in the coatings can be found only in the outer layer of the surface (200(?)) and sometimes(e.g, if the thickness is thin) Cr (Ⅵ) even not be detected. The total thickness of these coatings is 3000(?) (obtained in sol. 1~#). The ratio of Cr:O in main part of the coatings is about 1:2 and is constant throughout the coating.In the case of sol. 1~#, F, Fe, C and N are found and the reltive amount of these elements is rather constant throughout the coatings. The reduction of Cr(Ⅵ) by x-ray beam does not show up in our experiments.

收稿日期: 1987-02-25

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倪红兵;张冠生;郁祖湛;赵国庆;董树忠. 铝及铝合金表面铬酸盐转化膜的组成和结构研究——Ⅰ.离子束分析、X光电子能谱和俄歇电子能谱测试[J]. 中国腐蚀与防护学报, 1987, 7(1): 50-59.
. STUDIES ON THE COMPOSITION AND STRUCTURE OF THE CHROMATE CONVERSION COATINGS ON THE SURFACE OF ALUMINUM AND ITS ALLOY Ⅰ. AN RBS. ERD. XPS. AND. AES. STUDY. J Chin Soc Corr Pro, 1987, 7(1): 50-59.

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https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y1987/V7/I1/50

[1] Wernick, S.; Pinner, R., The Surface Treatment and Finishing of Aluminum and It's alloyls. 1, P. 4th Edition, Robert Draper LTD. Tedditngton, (1972)
[2] Biestek, T.; Weber. J., Electrolytic and Chemical Conversion Coatings. Portcullis Press, (1976)
[3] Gebhardt, M., Farbe und Lack. 74, Jahrg, 3, 217(1968)
[4] Trerton, J.A.; Amor, M, P., Transaetions of the Institute of Metal Finishing. 60, 92 (1982)
[5] Katgman, H. A.; Malcuf, G.M., Applications of Surface Science, 2, 16 4(1979)
[6] 陈春成.私人通信。
[7] Chu, W. K.; et al., Backscattering Spectrometry. Academic Press Iuc, New York, 21 (1978)
[8] Doyle, B. L.; Peercy, P. S., Appl. Phys. Lett.,34, 811(1979)
[9] 周云峥.中国科学院兰州近代物理研究所,研究生论文,2,(1985)
[10] 俞鸣人,庞嬿婉、程士宁,王迅.应用科学学报,2,17(1984)
[11] Wagner, C. D.; et al., Handbook of X-Ray Photoelectron Spectroscopy. (1978)

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