Hybrid braze tapes and hybrid braze tape methods

Patent metadata

Field	Value
Publication number	US-2016129533-A1
Application number	US-201414535721-A
Country	US
Kind code	A1
Filing date	Nov 7, 2014
Priority date	Nov 7, 2014
Publication date	May 12, 2016
Grant date	—

Abstract

A hybrid braze tapes includes a braze tape layer comprising a braze alloy composition and a binder, and, a polytetrafluoroethylene (“PTFE”) tape layer disposed adjacent a surface of the braze tape layer.

First claim

What is claimed is:

1 . A hybrid braze tape comprising:
a braze tape layer comprising a braze alloy composition and a binder; and, a polytetrafluoroethylene (“PTFE”) tape layer disposed adjacent a surface of the braze tape layer.

2 . The hybrid braze tape of claim 1 , further comprising an adhesive material disposed between and configured to hold together the braze tape layer and the PTFE tape layer.

3 . The hybrid braze tape of claim 2 , wherein the adhesive material comprises double sided adhesive tape.

4 . The hybrid braze tape of claim 1 , wherein the braze alloy composition comprises a nickel-, cobalt-, or iron-based alloy.

5 . The hybrid braze tape of claim 4 , wherein the braze alloy composition comprises about 70.9 percent nickel, about 19 percent chromium and about 10.1 percent silicon.

6 . The hybrid braze tape of claim 1 , wherein the braze tape layer and the PTFE tape layer comprise for a total thickness of greater than or equal to about 0.003 inches.

7 . The hybrid braze tape of claim 1 , wherein the braze tape layer and the PTFE tape layer comprise for a total thickness of less than or equal to about 0.08 inches.

8 . The hybrid braze tape of claim 1 , further comprising an additional braze tape layer disposed adjacent an opposite surface of the PTFE tape layer as the first braze tape layer.

9 . The hybrid braze tape of claim 1 , further comprising an additional PTFE tape layer disposed adjacent an opposite surface of the braze tape layer as the first PTFE tape layer.

10 . The hybrid braze tape of claim 1 , wherein a surface area of the PTFE tape layer is greater than a surface area of the braze tape layer.

11 . A hybrid braze tape method comprising, providing a base component comprising a surface;
disposing a hybrid braze tape on the surface of the base component, the hybrid braze tape comprising:
a braze tape layer comprising a braze alloy composition and a binder; and,
a polytetrafluoroethylene (“PTFE”) tape layer disposed adjacent a surface of the braze tape layer; and,
applying heat to burn away the PTFE tape layer and to melt the braze tape layer so that it at least partially bonds with the base component.

12 . The hybrid braze tape method of claim 11 further comprising, providing an additional component adjacent the base component prior to applying heat, wherein the hybrid braze tape is disposed between the base component and the adjacent component, and wherein subsequently applying heat further causes the braze tape layer to at least partially bond with the additional component.

13 . The hybrid braze tape method of claim 12 , wherein the base component comprises a tube.

14 . The hybrid braze tape method of claim 12 , wherein the additional component comprises a plate.

15 . The hybrid braze tape method of claim 12 , wherein the base component and the additional component comprise the same material.

16 . The hybrid braze tape method of claim 11 , wherein the base component comprises a turbine component.

17 . The hybrid braze tape method of claim 11 , wherein the base component comprises a nickel-, cobalt-, or iron-based alloy.

18 . The hybrid braze tape method of claim 17 , wherein the braze alloy composition comprises a nickel-, cobalt-, or iron-based alloy.

19 . The hybrid braze tape method of claim 18 , wherein the braze alloy composition comprises about 70.9 percent nickel, about 19 percent chromium and about 10.1 percent silicon.

20 . The hybrid braze tape method of claim 11 , wherein the hybrid braze tape further comprises an adhesive material disposed between and configured to hold together the braze tape layer and the PTFE tape layer.

Assignees

• Gen Electric

Inventors

• Cui Yan
• Kottilingam Srikanth Chandrudu
• Tollison Brian Lee
• Lin Dechao
• Schick David Edward

Classifications

• C22C19/05

  with chromium · CPC title

• B32B27/322

  comprising halogenated polyolefins, e.g. PTFE · CPC title

• B32B15/08

  of synthetic resin · CPC title

• B23K35/3613 Primary

  Polymers, e.g. resins · CPC title

• B32B2311/00

  Metals, their alloys or their compounds · CPC title