Brazeable aluminum material and a method of producing same

Details Brazeable aluminum material and a method of producing same Brazeable aluminum material and a method of producing same

1993-10-27

1997-01-14

Walsh, Donald P.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Making composite or hollow article

419 23, 419 30, 419 46, 419 61, 228183, B22F 702, B23K 100

Patent

active

055949304

ABSTRACT:
A brazeable aluminum material is composed of an aluminum core and a brazing agent layer consisting of a brazing agent thermally sprayed onto covering a surface of the core. A number of unmolten minute particles of the brazing agent are present in the brazing agent layer, which contains at least an aluminum-silicon alloy and/or a mixture of aluminum and silicon. Characteristic features of a method of producing the brazeable aluminum material are the steps of: preparing a powder composed of minute particles; and thermally spraying the powder onto the aluminum core in such a state that only a surface of each minute particle is molten, with a pith of the particle remaining unmolten. The powder is an Al-Si alloy and/or a mixture of Al powder and Si powder.

REFERENCES:
patent: 4901908 (1990-02-01), Negura et al.
patent: 4905886 (1990-03-01), Kennedy et al.
patent: 5251374 (1993-10-01), Halstead
patent: 5330090 (1994-07-01), Iwai et al.
B. Wielage et al. "Hochtemperaturloten von X 5 CrNi 18 10 und NiCr 20 TiAl bei durch thermisches Spritzen aufgebrachten Loten," Schweissen Und Schneiden, vol. 42, No. 5, May 1990, pp. 228-231 (translation included).

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