Reducing metals as a brazing flux
Assignee3M Innovative Properties Company
InventorGary M. Palmgren
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Abstract
The present invention comprises a method of manufacturing a brazed body. The method comprises forming a multi-layer assembly comprising: a first material capable of forming a first oxide and having a melting temperature higher than 660° C.; a first reducing metal adjacent the first material, the reducing metal capable of reducing at least a portion of the first oxide on the first material a braze adjacent to the reducing metal; and a second material adjacent the braze, the second material comprising a material having a melting temperature higher than 660° C. The method then comprises creating a vacuum around the assembly, and heating the assembly to melt the reducing metal and the braze. The assembly is then subject to cooling to thereby form the brazed body.
Claims7
A brazed body comprising
- (a) a first layer comprising a first material, the first material having a melting temperature higher than 660° C.;
- (b) a second layer comprising a second material, the second material having a melting temperature higher than 660° C.;
- and
- (c) a filler layer between the first layer and the second layer, the filler layer comprising a multi-phase alloy having a braze and aluminum oxide.
An abrasive article comprising
- (a) a first layer comprising a fused abrasive body;
- (b) a second layer comprising a material having a melting temperature higher than 660° C.;
- and
- (c) a filler layer between the first layer and the second layer, the filler layer comprising a multi-phase alloy comprised of a braze and a reducing metal oxide.
An abrasive article comprising
- a plurality of abrasive particles;
- a metal having a melting temperature greater than 660° C.;
- and
- a filler layer between the metal and the abrasive particles comprising braze and aluminum oxide.
A multi-layer brazing assembly comprising
- (a) a braze metal foil layer;
- and
- (b) an aluminum layer covering at least part of one surface of the braze, the aluminum layer being between about 1 micrometer and 20 micrometers thick.
Dependencies are inferred from the claim text.