Braze materials and earth-boring tools comprising braze materials

Patent metadata

Field	Value
Publication number	US-10807201-B2
Application number	US-201816173256-A
Country	US
Kind code	B2
Filing date	Oct 29, 2018
Priority date	Nov 18, 2014
Publication date	Oct 20, 2020
Grant date	Oct 20, 2020

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;
at least one element selected from the group consisting of nickel and titanium; and
from about 1.5% to about 2% magnesium by weight; and
wherein the braze material comprises a solid mixture having a melting point that is between the melting point of silver and the melting point of magnesium.

2. The braze material of claim 1 , wherein the braze material comprises at least two elements selected from the group consisting of indium, tin, zinc and magnesium.

3. The braze material of claim 1 , wherein the braze material comprises zinc.

4. 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.

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

6. 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.

7. The braze material of claim 6 , wherein the particles of the first plurality comprise a first material having a first composition and the particles of the second plurality comprise a second material having a second composition different from the first composition.

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

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

10. The braze material of claim 1 , wherein the braze material comprises from about 4% to about 20% copper by weight.

11. The braze material of claim 10 , wherein the braze material comprises from about 5% to about 9% copper by weight.

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

13. The braze material of claim 1 , wherein the braze material comprises from about 1% to about 2% nickel by weight.

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

15. The braze material of claim 1 , wherein the braze material comprises from about 2% to about 4% indium by weight.

16. The braze material of claim 1 , wherein the braze material comprises from about 25% to about 35% zinc by weight.

17. The braze material of claim 1 , wherein about 20% to about 35% of the weight of the braze material is comprises by elements selected from the group consisting of indium, tin, zinc, and magnesium.

18. 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;
at least one element selected from the group consisting of nickel and titanium; and
from about 1.5% to about 2% magnesium by weight; and
wherein the braze material comprises a solid mixture having a melting point that is between the melting point of silver and the melting point of magnesium.

19. The earth-boring tool of claim 18 , wherein the first body comprises a bit blade of a bit body, and wherein the second body comprises a cutting element comprising a polycrystalline material.

Assignees

• Baker Hughes A Ge Co Llc
• Baker Hughes Holdings Llc

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

• B22F7/064

  using an intermediate powder layer · CPC title

• B23K35/0244

  Powders, particles or spheres; Preforms made therefrom · CPC title

• B23K35/36

  Selection of non-metallic compositions, e.g. coatings or fluxes (B23K35/34 takes precedence); Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest · CPC title