Braze materials and earth-boring tools comprising braze materials

Patent metadata

Field	Value
Publication number	US-10160063-B2
Application number	US-201715646839-A
Country	US
Kind code	B2
Filing date	Jul 11, 2017
Priority date	Nov 18, 2014
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

A method includes disposing a braze material adjacent a first body and a second body; heating the braze material and forming a transient liquid phase; and transforming the transient liquid phase to a solid phase and forming a bond between the first body and the second body. The braze material includes copper, silver, zinc, magnesium, and at least one material selected from the group consisting of nickel, tin, cobalt, iron, phosphorous, indium, lead, antimony, cadmium, and bismuth.

First claim

What is claimed is:

1. A braze material comprising:
copper;
from about 50% to about 70% silver by weight;
from about 25% to about 35% zinc by weight;
magnesium; and
at least one material selected from the group consisting of nickel, tin, cobalt, iron, phosphorous, indium, lead, antimony, cadmium, and bismuth.

2. The braze material of claim 1 , wherein the braze material comprises metallic particles having an average particle size in a range from about 1 μm to about 15 μm.

3. The braze material of claim 1 , further comprising an organic binder.

4. The braze material of claim 1 , wherein the braze material comprises a first plurality of metallic particles and a second plurality of metallic particles interspersed with the first plurality of metallic particles.

5. The braze material of claim 4 , wherein the first plurality of metallic particles comprises a first material having a first composition and the second plurality of metallic particles comprises a second material having a second composition different from the first composition.

6. The braze material of claim 1 , wherein the braze material comprises at least one intermetallic compound.

7. The braze material of claim 1 , further comprising nanoparticles comprising at least one material selected from the group consisting of carbides, oxides, and borides.

8. The braze material of claim 7 , wherein the nanoparticles comprise tungsten carbide.

9. The braze material of claim 7 , wherein the nanoparticles comprise aluminum oxide.

10. The braze material of claim 6 , wherein the braze material comprises at least one intermetallic compound selected from the group consisting of Ni 3 Sn, Ni 3 In, FeSn, FeSn 2 , CoSn, CoSn 2 , and Co 3 Sn 2 .

11. The braze material of claim 1 , wherein the braze material comprises indium.

12. The braze material of claim 1 , wherein the braze material comprises tin.

13. The braze material of claim 1 , wherein the braze material comprises from about 5% to about 9% copper by weight.

14. The braze material of claim 1 , wherein the braze material comprises from about 58.5% to about 60% silver by weight.

15. The braze material of claim 1 , wherein the braze material comprises from about 1.5% to about 2% magnesium by weight.

16. The braze material of claim 1 , wherein the braze material comprises titanium.

17. An earth-boring tool, comprising:
a first body,
a second body; and
a braze material bonding the second body to the first body, the braze material comprising:
copper;
from about 50% to about 70% silver by weight;
from about 25% to about 35% zinc by weight;
magnesium;
at least one material selected from the group consisting of nickel, tin, cobalt, iron, phosphorous, indium, lead, antimony, cadmium, and bismuth.

Assignees

• Baker Hughes Inc

Inventors

• Chen Wei
• Bird Marc W
• Stevens John H

Classifications

• B22F1/09

  Mixtures of metallic powders · CPC title

• B22F1/10

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

• B23K35/0222

  for use in soldering or brazing (B23K35/0205 takes precedence) · CPC title

• B23K35/025

  Pastes, creams or slurries · CPC title

• B22F1/0003

  Operations & Transport · mapped topic