Abstract
The evolution of the surface oxide film along the depth direction of typical aluminum alloy under medium-temperature brazing was investigated by means of X-ray photoelectron spectroscopy (XPS). For the alloy with Mg content below 2.0wt%, whether under cold rolling condition or during medium-temperature brazing process, the enrichment of Mg element on the surface was not detected and the oxide film was pure Al2O3. However, the oxide film grew obviously during medium-temperature brazing process, and the thickness was about 80 nm. For the alloy with Mg content above 2.0wt%, under cold rolling condition, the original surface oxide film was pure Al2O3. However, the Mg element was significantly enriched on the outermost surface during medium-temperature brazing process, and MgO-based oxide film mixed with small amount of MgAl2O4 was formed with a thickness of about 130 nm. The alloying elements of Mn and Si were not enriched on the surface neither under cold rolling condition nor during mediumtemperature brazing process for all the selected aluminum alloy, and the surface oxide film was similar to that of pure aluminum, which was almost entire Al2O3.
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References
Jeurgens L P H, Sloof W G, Tichelaar F D et al. Structure and morphology of aluminium-oxide films formed by thermal oxidation of aluminium[J]. Thin Solid Films, 2002, 418(2): 89–101.
Jeurgens L P H, Sloof W G, Tichelaar F D et al. Composition and chemical state of the ions of aluminium-oxide films formed by thermal oxidation of aluminum[J]. Surface Science, 2002, 502(3): 313–332.
Zhang Qiyun, Liu Shuqi, Zhang Yuhua. Interaction of oxide film with molten flux during aluminum brazing[J]. Acta Metallurgica Sinica, 1989, 25(2): 121–125 (in Chinese).
Panda E, Jeurgens L P H, Mittemeijer E J. Effect of in vacuo surface pre-treatment on the growth kinetics and chemical constitution of ultra-thin oxide films on Al-Mg alloy substrates[J]. Surface Science, 2010, 604(5/6): 588–594.
Mizuno K, Nylund A, Olefjord I. Surface analysis of oxide formed during heat treatment of Al-Mg-Si alloys[J]. Materials Science and Technology, 1996, 12(4): 306–314.
Yu Jueqi. Study on Surface Oxide Film of Al-Mg Alloy[R]. Hunan University, Changsha, 1997 (in Chinese).
Zhu Hong, Xue Songbai, Sheng Zhong. Mechanism of brazing flux CsF-AlF3 and KF-AlF3 reacting with oxide film of 6063 aluminum alloy[J]. Transactions of the China Welding Institution, 2009, 30(9): 13–16 (in Chinese).
Yu Weiyuan, Guo Yi, Lu Wenjiang. Mechanism of 6061 aluminum alloy oxide film removing with brazing flux KFKBr- AlF3-CsF [J]. Weld Technology, 2012, 41(7): 46–49 (in Chinese).
Takemoto Tadashi, Matsunawa Akira, Shibutani Toshihiro. Characteristics of CsF-AlF3 system non-corrosive flux for brazing of aluminum[J]. Quarterly Journal of the Japan Welding Society, 1999, 17(3): 375–381.
Zhang Qiyun, Zhuang Hongshou. Manual of Brazing and Soldering[M]. China Machinery Press, Beijing, 2008. 24–25 (in Chinese).
Seyama H, Soma M. X-ray photoelectron spectroscopic study of montmorillonite containing exchangeable divalent cations[J]. Journal of the Chemical Society, Faraday Transactions, 1984, 80: 237–248.
Briggs D, Seah M P. Practical Surface Analysis [M]. 2nd ed. John Willey & Sons, New York, 1993.
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Supported by National Natural Science Foundation of China (No. 51005163 and No.51275351) and Scientific Research Foundation for the Returned Overseas Chinese Scholars, Ministry of Education of China.
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Cheng, F., Zhao, H., Wang, Y. et al. Evolution of surface oxide film of typical aluminum alloy during medium-temperature brazing process. Trans. Tianjin Univ. 20, 54–59 (2014). https://doi.org/10.1007/s12209-014-2236-4
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DOI: https://doi.org/10.1007/s12209-014-2236-4