Method of manufacturing a ceramic metallization for ceramic metal transition

Patent metadata

Field	Value
Publication number	US-10549371-B2
Application number	US-201615064653-A
Country	US
Kind code	B2
Filing date	Mar 9, 2016
Priority date	Sep 20, 2013
Publication date	Feb 4, 2020
Grant date	Feb 4, 2020

Abstract

A method of manufacture of a ceramic metallization for ceramic metal transition, and ceramic metal transition itself, for the use in low, medium and high-voltage techniques, which may avoid a brazing foil, and/or overcome problems with the use of thin brazing foils, and/or to make the manufacture easier, but also more effective, wherein, on top of the Ni-layer will be placed an Ag-layer as a third layer, and then the metal part will be laid on top and connected by brazing or tempering.

First claim

The invention claimed is:

1. A method of manufacturing a ceramic metallization for a ceramic metal transition for use with components of a low-, medium-, and/or high-voltage device, switch, or switching unit by which a ceramic body is connected to a metal part, the method comprising:
covering a ceramic body, comprising a Al 2 O 3 material, with at least a first layer comprising MoMn and a second layer comprising Ni;
placing a third layer comprising Ag on top of the second layer;
laying the metal part on top of the third layer; and
connecting the metal part to one or more of the first, second, and third layers at a connecting region,
wherein the connecting comprises brazing, and the brazing comprises in-situ tempering under an inert gas environment, and
wherein the connecting takes place at a temperature above an alloying point so as to provide an in-situ alloying process by diffusion of metals in the connecting region.

2. The method of claim 1 , wherein the ceramic body mainly comprises the Al 2 O 3 material.

3. The method of claim 1 , wherein the connecting connects the metal part to the ceramic body.

4. The method of claim 1 , wherein the first layer mainly comprises MoMn.

5. The method of claim 1 , wherein the first layer comprises tungsten.

6. The method of claim 1 , wherein the second layer mainly comprises Ni.

7. The method of claim 1 , wherein the third layer mainly comprises Ag.

8. The method of claim 1 , wherein the placing of the third layer is at least partially carried out galvanically.

9. The method of claim 1 , wherein the placing of the third layer is at least partially carried out by cold gas spraying.

10. A method of manufacturing a ceramic metallization for a ceramic metal transition for use with components of a low-, medium-, and/or high-voltage device, switch, or switching unit by which a ceramic body is connected to a metal part, the method comprising:
covering a ceramic body, comprising a Al 2 O 3 material, with at least a first layer comprising MoMn and a second layer comprising Ni;
placing a third layer comprising Ag on top of the second layer;
laying the metal part on top of the third layer; and
connecting the metal part to one or more of the first, second, and third layers at a connecting region,
wherein the connecting comprises brazing, and the brazing comprises in-situ tempering under an active gas environment, and
wherein the connecting takes place at a temperature above an alloying point so as to provide an in-situ alloying process by diffusion of metals in the connecting region.

11. A method of manufacturing a ceramic metallization for a ceramic metal transition for use with components of a low-, medium-, and/or high-voltage device, switch, or switching unit by which a ceramic body is connected to a metal part, the method comprising:
covering a ceramic body, comprising a Al 2 O 3 material, with at least a first layer comprising MoMn and a second layer comprising Ni;
placing a third layer comprising Ag on top of the second layer;
laying the metal part on top of the third layer; and
connecting the metal part to one or more of the first, second, and third layers at a connecting region,
wherein the connecting comprises brazing, and the brazing comprises in-situ tempering under a hydrogen environment, and
wherein the connecting takes place at a temperature above an alloying point so as to provide an in-situ alloying process by diffusion of metals in the connecting region.

Assignees

• Abb Technology Ag
• Abb Schweiz Ag

Inventors

• Gentsch Dietmar

Classifications

• C04B2237/125

  based on noble metals, e.g. silver · CPC title

• C23C28/021

  including at least one metal alloy layer · CPC title

• C04B2237/343

  Alumina or aluminates · CPC title

• C21D9/50

  for welded joints · CPC title

• C04B37/026 Primary

  consisting of metals or metal salts · CPC title