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A novel brazing technique for aluminum and other metals

Published online by Cambridge University Press:  03 March 2011

R.S. Timsit  and
B.J. Janeway
R.S. Timsit
Affiliation:
Alcan International Ltd., Kingston R&D Centre, P.O. Box 8400, Kingston, Ontario, Canada K7L 5L9
B.J. Janeway
Affiliation:
Alcan International Ltd., Kingston R&D Centre, P.O. Box 8400, Kingston, Ontario, Canada K7L 5L9
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Abstract

In this brazing technique, at least one of the metal surfaces to be joined is coated with a powder-mixture of silicon and a potassium fluoroaluminate flux. Brazing of aluminum is carried out by heating at ∼600 °C in nitrogen gas. During heating, the flux melts and dissolves the oxide layers on the contacting surfaces, thus allowing the silicon to come into intimate contact with bare aluminum. At a temperature exceeding the Al–Si eutectic temperature of 577 °C, the silicon diffuses rapidly into the aluminum and generates in situ a layer of Al–Si liquid alloy of near-eutectic composition. The filler material then flows into the joint and forms a fillet. This brazing technique may be exploited with aluminum using intermediary elements other than Si, and may be used for joining a variety of metals.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 8 , Issue 11 , November 1993 , pp. 2749 - 2752
Copyright
Copyright © Materials Research Society 1993

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References

REFERENCES

1Cooke, W. E., Wright, T. E., and Hirschfield, J. A., SAE Int. Congr., Detroit, Technical Paper Series 780300 (1978).Google Scholar
2Claydon, D. G. W. and Sugihara, A., SAE Int. Congr., Detroit, Technical Paper Series 830021 (1983).Google Scholar
3Goodremote, C. E., Guntly, L. A., and Costello, N. F., SAE Int. Congr., Detroit, Technical Paper Series 880445 (1988).Google Scholar
4Fortin, P. E., Kellerman, W. M., Smith, F. N., Rogers, C. J., and Wheeler, M. J., SAE Int. Congr., Detroit, Technical Paper Series 852228 (1987).Google Scholar
5Binary Alloy Phase Diagrams, edited by Massalski, T. B. (ASM INTERNATIONAL, Materials Park, OH, 1990).Google Scholar
6Wallace, E. R. and Dewing, E. W., U.S. Patent No. 3951328 (April 20, 1976).Google Scholar
7Timsit, R. S., U.S. Patent No. 5 100 048 (March 31, 1992).Google Scholar
8Thompson, W. T. and Goad, D. G. W., Can. J. Chem. 154, 3342 (1976).CrossRefGoogle Scholar
9Field, D. J. and Steward, N. I., SAE Int. Congr., Detroit, Technical Paper Series 870186 (1987).Google Scholar
10Timsit, R. S. and Janeway, B. J., unpublished.Google Scholar
11Ternary Alloys, edited by Petzow, G. and Effenberg, G. (ASM INTERNATIONAL, Materials Park, OH, 1992), Vol. 5.Google Scholar