Repair method and repair material

Patent metadata

Field	Value
Publication number	US-10994366-B2
Application number	US-201816120522-A
Country	US
Kind code	B2
Filing date	Sep 4, 2018
Priority date	Jan 7, 2014
Publication date	May 4, 2021
Grant date	May 4, 2021

Abstract

A repair method that includes covering a damaged part of a member to be repaired with a repair material, and heating the repair material to a predetermined temperature to form an alloy layer. At least the surface of the member to be repaired is a first metal such as Cu. The repair material includes a second metal such as Sn. By the heating, the surface of the member to be repaired is integrally joined with a layer of an intermetallic compound and an alloy having a melting point higher than a melting point of either of the first metal or the second metal.

First claim

The invention claimed is:

1. A method for repairing a damaged part of a member to be repaired, the method comprising:
covering a damaged part of a metal surface with a repair material; and
heating the repair material to a predetermined temperature to form an alloy layer, wherein the alloy layer contains, as a principal phase, an intermetallic compound predominantly composed of a first metal and a second metal having a melting point higher than that of the first metal; and
disposing an auxiliary material containing the first metal on a surface of the repair material and heating the auxiliary material after heating the repair material to the predetermined temperature to form the alloy layer.

2. The repair method according to claim 1 ,
wherein the first metal has Sn as a main component, and
the second metal is at least one alloy selected from the group consisting of a Cu—Ni alloy, a Cu—Mn alloy, a Cu—Al alloy, a Cu—Cr alloy and an Ag—Pd alloy.

3. The repair method according to claim 1 , wherein the metal surface is a metal having Sn as a main component, a metal having Ag as a main component, or a metal having Cu as a main component.

4. The repair method according to claim 1 , wherein the repair material has a film layer containing the first metal as a metal powder and the second metal as an alloy powder.

5. A method for repairing a damaged part of a member to be repaired, the method comprising:
covering a damaged part of a metal surface with a repair material; and
heating the repair material to a predetermined temperature to form an alloy layer,
wherein the alloy layer contains, as a principal phase, an intermetallic compound predominantly composed of a first metal and a second metal having a melting point higher than that of the first metal,
wherein the repair material has a film layer containing the first metal as a metal powder and the second metal as an alloy powder, and
wherein an auxiliary layer which contains the first metal is disposed on the film layer, and a side of the film layer and the auxiliary layer is abutted against a side of the damaged part.

6. A method for repairing a damaged part of a member to be repaired, the method comprising:
covering a damaged part of a metal surface with a repair material; and
heating the repair material to a predetermined temperature to form an alloy layer,
wherein the alloy layer contains, as a principal phase, an intermetallic compound predominantly composed of a first metal and a second metal having a melting point higher than that of the first metal,
wherein the repair material has a film layer containing the first metal as a metal powder and the second metal as an alloy powder,
wherein an auxiliary layer containing the first metal and the second metal is disposed on the film layer, and a side of the thick film layer and the auxiliary layer is abutted against a side of the damaged part, and
wherein a content of the first metal in the auxiliary layer is larger than a content of the first metal in the film layer.

7. The repair method according to claim 4 , wherein the film layer further contains a reducing agent and a resin.

8. The repair method according to claim 4 , wherein the film layer is disposed on a substrate sheet.

9. The repair method according to claim 1 , wherein the repair material has a multilayer structure of a first layer including the first metal and a second layer including the second metal.

10. The repair method according to claim 1 , wherein the repair material has a multilayer structure of a foil or film made of the second metal and a film layer made of the first metal.

11. The repair method according to claim 1 , wherein the repair material has a multilayer structure of a foil or film made of the first metal and a film layer made of the second metal.

12. The repair method according to claim 1 , wherein the repair material has a multilayer structure of a foil or film made of the first metal and a foil or film made of the second metal.

Assignees

• Murata Manufacturing Co

Inventors

• Ishino Satoshi
• Kawaguchi Yoshihiro
• Nakano Kosuke
• Takaoka Hidekiyo

Classifications

• B22F1/10

  Metallic powder containing lubricating or binding agents; Metallic powder containing organic material · CPC title

• B22F1/09

  Mixtures of metallic powders · CPC title

• B23K20/026 Primary

  with diffusion of soldering material · CPC title

• B23K35/302

  Cu as the principal constituent · CPC title

• B23K2101/06

  Tubes · CPC title