INTERACTION OF OXIDE FILM WITH MOLTEN FLUX DURING ALUMINUM BRAZING
ZHANG Qiyun;LIU Shuqi;ZHANG Yuhwa Dept. of Chemistry; Peking University
Cite this article:
ZHANG Qiyun;LIU Shuqi;ZHANG Yuhwa Dept. of Chemistry; Peking University. INTERACTION OF OXIDE FILM WITH MOLTEN FLUX DURING ALUMINUM BRAZING. Acta Metall Sin, 1989, 25(2): 133-136.
Abstract The interaction of oxide film with molten flux during aluminumbrazing has been studied by means of X-ray powder diffraction. The following con-clusions have been deduced: The swelling of aluminum oxide film is caused byLi~+ inserting into the vacancies of octahedral or tetrahedral structure of O atomskeleton in γ-Al_2O_3. The strength of oxide film decreases as the crystallinity in-creases by the treating of flux containing LiF.
1 Jordan M F, Milner D R. J Inst Met, 1956--57: 85: 33 2 Terrill J R, Cochran C N, Stokes J J, Haupin W E. Weld J, 1971; 50: 833 3 #12 4 张启运,刘淑祺,郭海,简艾.金属学报,1985;21:B35 5 Yamaguchi S. Z Phys Chem, Leipzig, 1975; 256: 337 6 Stohr J, Johansson L I, Brennan S, Hecht M. Phys. Rev. B, 1980; 22: 4052 7 张启运,郑朝贵,刘淑祺.金属学报,1979;15:109"
