|
|
|
| THE EFFECT OF Al, Cr Ni AND RE ON OXIDATION BEHAVIORS OF Ag-Cu EUTECTIC BASED ACTIVE BRAZING ALLOY |
| Xian Aiping; Si Zhongyao (Institute of Metal Research; Chinese Academy of Sciences)Zhou Longjiang; Shen Jianian and Li Tiefan (Corrasion Science Laboratory; Chinese Academy of Sciences) |
|
|
|
|
Abstract The oxidation behavior of Ag-Cu eutectic based active brazing alloys is studied by means of TGA, DTA, sessile drop method and X-ray diffraction technique. The results show that although the oxidation resistance of Ag-Cu eutectic-5at%Ti alloy at 873K is very poor, it can be improved by the addition of Al(5at%) without loss of its excellent wettability (contact angle 15° on sialon ceramic at 1150K for 5min). The oxidation kinetics behavior of the alloy with Al addition does not follow the parabolic law. In fact, the growth of the oxide film on the alloy becomes extremely slow after oxidation for 20 hours at 873K. The beneficial effect of aluminum can be attributed to the formation of an adhesive, protecive oxide film of CuAl_2O_4 on the alloy surface. As compared with the above results, the addition of Cr, Ni or RE is not effective in the improvement of oxidation resistance of the Ag-Cu-Ti brazing alloy.
|
|
Received: 25 April 1992
|
Cite this article:
Xian Aiping; Si Zhongyao (Institute of Metal Research; Chinese Academy of Sciences)Zhou Longjiang; Shen Jianian and Li Tiefan (Corrasion Science Laboratory; Chinese Academy of Sciences). THE EFFECT OF Al, Cr Ni AND RE ON OXIDATION BEHAVIORS OF Ag-Cu EUTECTIC BASED ACTIVE BRAZING ALLOY. J Chin Soc Corr Pro, 1992, 12(2): 164-168.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1992/V12/I2/164
|
[1] NaKa, M., Asami, K., et al., Trans. JWRI, 12． 145(1983)
[2] NaKa, M., and Okamoto, T., Trans, JWRI. 14, 29(1985)
[3] Moorhead, A. J., Weld. J., 62, 17(1983)
[4] Moorhead, A. J., and Keating, H., Weld. J., 65, 17(1986)
[5] Nicholas, M. J., et al., J. Mater. Sci., 15, 2197(1980)
[6] Kapoor, R. R., and Eagar, T. W., Metall. Trans., 20B, 919(1989)
[7] Mizuhara, H., and Mally, K., Weld. J., 64, 27(1985)
[8] Mizuhara, H., US Pat. No. 4591535, 1986
[9] Kapoor, R. R., and Eagar, T, W., J. Am. Ceram. Soc., 72, 448(1989)
[10] Xian. A. P., and Si, Z. Y., J. Mater. Sci., 25, 4483(1990)
[11] Kapoor, R. R., and Eagar, T. W., "Brazing Alloy Design for Metal/Ceramic Joints", Presented At 89th Annual Meeting of The American Ceramic Society, Pittsburgh, PA, April 28, 1987(Forum, Paper No. 12-F2-87)
[12] Huang, L. P., et al., Acta of Inorganic Mater. Sinica, 1(2) , 123(1986)
[13] Xian A. P. and Si Z. Y., J. Mater. Sci. Lett., 10, 246(1991) |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
