Method of characterizing a polycrystalline diamond element by at least one magnetic measurement

• US 8,461,832 B2
• Filed: 05/21/2010
• Issued: 06/11/2013
• Est. Priority Date: 10/03/2008
• Status: Active Grant

• Current Assignee: US Synthetic Corporation (ChampionX Corporation)
• Original Assignee: US Synthetic Corporation (ChampionX Corporation)
• Inventors: Bertagnolli, Kenneth E., Mukhopadhyay, Debkumar
• Primary Examiner(s): LEDYNH, BOT L
• Application Number:
  US12/785,014
• Publication Number:
  US 20100225311A1
• Time in Patent Office: 1,117 Days
• Field of Search: 324/228, 428/408
• US Class Current: 324/228
• CPC Class Codes: B21C 3/025 comprising diamond parts
• CPC Class Codes: B24D 18/0009 using moulds or presses
• CPC Class Codes: C04B 2237/36 Non-oxidic
• CPC Class Codes: C04B 2237/363 Carbon
• CPC Class Codes: C04B 37/001 directly with other burned ceramic articles
• CPC Class Codes: C22C 26/00 Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
• CPC Class Codes: E21B 10/567 with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
• CPC Class Codes: F16C 17/02 for radial load only
• CPC Class Codes: F16C 17/04 for axial load only
• CPC Class Codes: F16C 2206/04 Diamond like carbon [DLC]
• CPC Class Codes: F16C 2206/82 based on tungsten carbide [WC]
• CPC Class Codes: F16C 2220/20 by sintering pulverised material, e.g. powder metallurgy in general B22F
• CPC Class Codes: F16C 2240/40 Linear dimensions, e.g. length, radius, thickness, gap
• CPC Class Codes: F16C 2240/48 Particle sizes
• CPC Class Codes: F16C 2352/00 Apparatus for drilling in general E21
• CPC Class Codes: F16C 33/043 Sliding surface consisting mainly of ceramics, cermets or hard carbon, e.g. diamond like carbon [DLC]
• CPC Class Codes: F16C 33/26 made from wire coils; made from a number of discs, rings, rods, or other members
• CPC Class Codes: G01N 27/72 by investigating magnetic variables
• CPC Class Codes: G01N 27/80 for investigating mechanical hardness, e.g. by investigating saturation or remanence of ferromagnetic material
• CPC Class Codes: Y10T 428/24058 including grain, strips, or filamentary elements in respective layers or components in angular relation
• CPC Class Codes: Y10T 428/24997 : Of metal-containing material
• CPC Class Codes: Y10T 428/25 : Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
• CPC Class Codes: Y10T 428/252 : Glass or ceramic [i.e., fired or glazed clay, cement, etc.] [porcelain, quartz, etc.]
• CPC Class Codes: Y10T 428/30 : Self-sustaining carbon mass or layer with impregnant or other layer

Abstract

In an embodiment, a method of characterizing a polycrystalline diamond element is disclosed. The method includes providing the polycrystalline diamond element, and measuring at least one magnetic characteristic of the polycrystalline diamond element.

Claims

1. A method of characterizing a polycrystalline diamond element, the method comprising:

providing the polycrystalline diamond element including a plurality of diamond grains defining a plurality of interstitial regions, wherein at least a portion of the plurality of interstitial regions are occupied by a metallic material;

measuring at least one magnetic characteristic of the polycrystalline diamond element; and

determining at least one physical characteristic of the polycrystalline diamond element at least partially based on the at least one magnetic characteristic.

2. The method of claim 1 wherein measuring at least one magnetic characteristic of the polycrystalline diamond element comprises measuring a coercivity of the polycrystalline diamond element.

3. The method of claim 1 wherein measuring at least one magnetic characteristic of the polycrystalline diamond element comprises measuring a magnetic saturation of the polycrystalline diamond element.

4. The method of claim 1 wherein measuring at least one magnetic characteristic of the polycrystalline diamond element comprises measuring a coercivity of the polycrystalline diamond element, and wherein the at least one physical characteristic of the polycrystalline diamond element is an extent of diamond-to-diamond bonding between the diamond grains in the polycrystalline diamond element.

5. The method of claim 1 wherein measuring at least one magnetic characteristic of the polycrystalline diamond element comprises measuring a coercivity of the polycrystalline diamond element, and wherein the at least one physical characteristic of the polycrystalline diamond element is mean free path between neighboring ones of the diamond grains.

6. The method of claim 1 wherein measuring at least one magnetic characteristic of the polycrystalline diamond element comprises measuring a magnetic saturation of the polycrystalline diamond element, and wherein the at least one physical characteristic of the polycrystalline diamond element is concentration of the metallic material.

7. The method of claim 1, further comprising:

wherein measuring at least one magnetic characteristic of the polycrystalline diamond element comprises measuring a magnetic saturation and a coercivity of the polycrystalline diamond element; and

determining a specific permeability of the polycrystalline diamond element based on the magnetic saturation and the coercivity.

8. The method of claim 1, further comprising:

wherein measuring at least one magnetic characteristic of the polycrystalline diamond element comprises measuring a magnetic saturation of the polycrystalline diamond element; and

determining a specific magnetic saturation of the polycrystalline diamond element at least partially based on the magnetic saturation and a mass of the polycrystalline diamond element.

9. The method of claim 1, further comprising:

wherein measuring at least one magnetic characteristic of the polycrystalline diamond element comprises measuring a magnetic saturation of the polycrystalline diamond element; and

determining a concentration of the metallic material at least partially based on the at least one magnetic characteristic.

10. The method of claim 1, further comprising determining a concentration of the metallic material at least partially based on the at least one magnetic characteristic.

11. The method of claim 1 wherein the metallic material comprises a metal-solvent catalyst.

12. The method of claim 11 wherein the metal-solvent catalyst comprises a member selected from the group consisting of iron, nickel, cobalt, and alloys thereof.

13. The method of claim 1, further comprising calculating a concentration of the metallic material at least partially based on the at least one magnetic characteristic.

14. The method of claim 1 wherein the polycrystalline diamond element is at least partially leached of the metallic material.

15. The method of claim 1 wherein the polycrystalline diamond element is unleached.

16. The method of claim 1 wherein the polycrystalline diamond element was formed on a cemented carbide substrate.

17. The method of claim 1 wherein the polycrystalline diamond element can form part of a polycrystalline diamond compact in which the polycrystalline diamond element is bonded to a cemented carbide substrate.

18. A method, comprising:

providing a polycrystalline diamond element that can form part of a polycrystalline diamond compact in which the polycrystalline diamond element is bonded to a cemented carbide substrate; and

measuring at least one magnetic characteristic of the polycrystalline diamond element; and

determining at least one physical characteristic of the polycrystalline diamond element at least partially based on the at least one magnetic characteristic.

19. The method of claim 18 wherein measuring at least one magnetic characteristic of the polycrystalline diamond element comprises measuring a magnetic saturation of the polycrystalline diamond element.

20. A method of characterizing a polycrystalline diamond element, the method comprising:

providing the polycrystalline diamond element; and

measuring at least one magnetic characteristic of the polycrystalline diamond element.