Diffusion-bonded metallic materials

Patent metadata

Field	Value
Publication number	US-9682445-B1
Application number	US-201615043231-A
Country	US
Kind code	B1
Filing date	Feb 12, 2016
Priority date	Feb 12, 2016
Publication date	Jun 20, 2017
Grant date	Jun 20, 2017

Abstract

A method includes disposing ZrH 2 nanoparticles on a first metallic material. The method includes performing a diffusion bonding operation to bond the first metallic material to a second metallic material. At least one of the first metallic material or the second metallic material includes a surface oxide layer. During the diffusion bonding operation, the ZrH 2 nanoparticles chemically react with the surface oxide layer.

First claim

What is claimed is:

1. A method comprising:
disposing ZrH 2 nanoparticles on a first metallic material; and
performing a diffusion bonding operation to bond the first metallic material to a second metallic material forming a diffusion bond region,
wherein at least one of the first metallic material or the second metallic material includes a surface oxide layer, and
wherein, during the diffusion bonding operation, the ZrH 2 nanoparticles chemically react with the surface oxide layer.

2. The method of claim 1 , further comprising performing a superplastic forming operation after performing the diffusion bonding operation.

3. The method of claim 1 , wherein disposing the ZrH 2 nanoparticles on the first metallic material includes disposing a metallic powder on the first metallic material, wherein the metallic powder includes the ZrH 2 nanoparticles.

4. The method of claim 3 , wherein the metallic powder includes an aluminum powder or an aluminum alloy powder.

5. The method of claim 1 , wherein at least one of the first metallic material or the second metallic material includes aluminum, wherein the surface oxide layer includes an aluminum oxide layer, and wherein chemical reaction of ZrH 2 nanoparticles with the surface oxide layer breaks down at least a portion of the aluminum oxide layer enabling migration of aluminum atoms during the diffusion bonding operation.

6. The method of claim 1 , wherein at least one of the first metallic material or the second metallic material includes beryllium, wherein the surface oxide layer includes a beryllium oxide layer, and wherein chemical reaction of ZrH 2 nanoparticles with the surface oxide layer breaks down at least a portion of the beryllium oxide layer enabling migration of beryllium atoms during the diffusion bonding operation.

7. The method of claim 1 , wherein at least one of the first metallic material or the second metallic material includes magnesium, wherein the surface oxide layer includes a magnesium oxide layer, and wherein chemical reaction of ZrH 2 nanoparticles with the surface oxide layer breaks down at least a portion of the magnesium oxide layer enabling migration of magnesium atoms during the diffusion bonding operation.

8. The method of claim 1 , further comprising, after disposing the ZrH 2 nanoparticles on the first metallic material, applying energy sufficient to increase atomic mobility to at least a portion of the first metallic material and a portion of the second metallic material.

9. The method of claim 8 , wherein applying the energy includes:
using at least one ultrasonic waveform source;
using at least one laser light source;
peening at least one of the first metallic material or the second metallic material; or
using cavitation of a fluid.

10. The method of claim 8 , wherein the energy is applied during or after the diffusion bonding operation.

11. The method of claim 1 , wherein disposing the ZrH 2 nanoparticles on the first metallic material includes selectively applying the ZrH 2 nanoparticles to a first area of the first metallic material.

12. The method of claim 11 , further comprising performing a superplastic forming operation to shape a second area of the first metallic material after the diffusion bonding operation, wherein the second area corresponds to an oxidized region that includes metallic oxides of at least one of the first metallic material or the second metallic material, wherein the oxidized region does not include zirconium oxide, and wherein the ZrH 2 nanoparticles were not applied to the second area during selective application of the ZrH 2 nanoparticles.

13. A diffusion-bonded metallic material formed by the method of claim 1 , the diffusion-bonded metallic material comprising an oxidized region corresponding to the surface oxide layer and disposed between the first metallic material and the second metallic material, where the oxidized region includes metallic oxides of at least one of the first metallic material or the second metallic material, and wherein the oxidized region does not include zirconium oxide.

14. The diffusion-bonded metallic material of claim 13 , wherein the method further comprises performing a superplastic forming operation after performing the diffusion bonding operation, wherein performing the superplastic forming operation shapes an oxidized region, and wherein the oxidized region includes metallic oxides of at least one of the first metallic material or the second metallic material, and wherein the oxidized region does not include zirconium oxide.

15. A diffusion-bonded metallic material, comprising:
two metallic materials;
a diffusion bond region disposed between the two metallic materials, the diffusion bond region including a reaction byproduct of ZrH 2 and a metal surface oxide layer and diffused metal atoms from the two metallic materials; and
an oxidized region corresponding to the metal surface oxide layer and disposed between the two metallic materials, wherein the oxidized region includes metallic oxides of at least one of the two metallic materials, and wherein the oxidized region does not include zirconium oxide.

16. The diffusion-bonded metallic material of claim 15 , wherein the oxidized region corresponds to a superplastically formed corrugation.

17. The diffusion-bonded metallic material of claim 15 , wherein the two metallic materials have different metallic compositions.

18. The diffusion-bonded metallic material of claim 15 , wherein the diffusion bond region has a thickness in range of 1 nm to 100 nm.

19. A vehicle comprising the diffusion-bonded metallic material of claim 15 .

20. The vehicle of claim 19 , wherein the vehicle includes a space vehicle, a water vehicle, an underwater vehicle, or a ground vehicle.

Assignees

• Chou Kathleen
• Slattery Kevin T
• Boeing Co

Inventors

• Chou Kathleen
• Slattery Kevin T

Classifications

• B23K35/025 Primary

  Pastes, creams or slurries · CPC title

• B23K20/026

  with diffusion of soldering material · CPC title

• B23K20/02

  by means of a press {; Diffusion bonding} · CPC title

• B23K35/34 Primary

  comprising compounds which yield metals when heated · CPC title

• B23K31/02 Primary

  relating to soldering or welding · CPC title