Multi-step method of nondestructively measuring a region within an ultra-hard polycrystalline construction

• US 7,616,734 B1
• Filed: 05/08/2007
• Issued: 11/10/2009
• Est. Priority Date: 05/09/2006
• Status: Active Grant

• Current Assignee: Smith International Incorporated (Schlumberger NV)
• Original Assignee: Smith International Incorporated (Schlumberger NV)
• Inventors: Mourik, Nephi, Corbett, Loel Gene
• Primary Examiner(s): THOMAS, COURTNEY D
• Application Number:
  US11/745,958
• Time in Patent Office: 917 Days
• Field of Search: 378 44- 50, 209588-589
• US Class Current: 378/46
• CPC Class Codes: G01N 2223/076 X-ray fluorescence
• CPC Class Codes: G01N 23/223 by irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence

Abstract

A method for nondestructively obtaining measurement information of a region within one or more ultra-hard polycrystalline constructions comprises conducing a first measurement using x-ray fluorescence by directing x-rays onto a surface of the diamond body, receiving x-ray fluorescence from the diamond body, and deriving measurement information regarding the region therefrom. A second method can be used on the same or other ultra-hard polycrystalline constructions to obtain measurement information regarding the region in a manner that is relatively more time efficient than the first method to facilitate use of the measurement method on a large number of constructions. The second measurement can be selected from the group including beta backscatter, x-ray radioscopy, eddy current, magnetic induction, and microresistance. In an example embodiment, the method is used to determine the thickness of a region within the diamond body that comprises less catalyst material than another region within the body.

Claims

1. A method for nondestructively obtaining measurement information within a plurality of ultra-hard polycrystalline constructions, each ultra-hard polycrystalline construction comprising a polycrystalline diamond body, wherein the measurement information is of a region within the polycrystalline diamond body that comprises less catalyst material than present in another region of the polycrystalline diamond body, and wherein the method comprises the steps of:

conducting a first measurement using a device comprising an x-ray source and x-ray detector by directing x-rays generated by the source onto a surface of the body of one or more of the ultra-hard polycrystalline constructions, receiving x-ray fluorescence from the body, and deriving the measurement information from the received x-ray fluorescence; and

using a nondestructive technique that is different than that used to conduct the first measurement to obtain a second measurement of one or more of the ultra-hard polycrystalline constructions;

wherein the measurement information is used to determine the thickness of the region comprising less catalyst material.

2. The method as recited in claim 1 wherein during the step of conducting the first measurement, the x-rays cause target atoms in the body to emit x-ray fluorescence, and wherein the region comprising less catalyst material comprises less target atoms.

3. The method as recited in claim 2 wherein the target atoms is a catalyst material selected from the group consisting of Group VIII elements of the Periodic table.

4. The method as recited in claim 1 wherein the step of conducting the second measurement is conducted using the techniques selected from the group consisting of beta backscatter, x-ray radioscopy, eddy current, magnetic induction, and microresistance.

5. The method as recited in claim 1 wherein the region comprising less catalyst material extends a depth from the surface of the diamond body.

6. A method for nondestructively obtaining measurement information within a diamond body of a plurality of ultra-hard polycrystalline constructions, wherein the diamond body includes a first region that extends a depth from a surface of the body and that is substantially free of a catalyst material, and a second region that extends from the first region and that includes the catalyst material, wherein the measurement information is used to determine the thickness of the first region, and wherein the method comprises the steps of:

conducting a first measurement using a device comprising an x-ray source and x-ray detector by directing x-rays onto a surface of the diamond body of one or more of the ultra-hard polycrystalline constructions, receiving x-ray fluorescence from the diamond body, and deriving the measurement information from the received x-ray fluorescence; and

subjecting one or more of the ultra-hard polycrystalline constructions to a nondestructive technique selected from the group consisting of beta backscatter, x-ray radioscopy, eddy current, magnetic induction, and microresistance to obtain a second measurement;

wherein during the step of conducting a first measurement a map of measurement data is provided reflecting a measured surface area within the diamond body.

7. The method as recited in claim 6 wherein the surface area is disposed along an interface between the first and second regions.

8. The method as recited in claim 6 wherein during the step of conducting a first measurement, the x-ray fluorescence is emitted from a target atom that is present in the second region but not in the first region.

9. The method as recited in claim 6 wherein the target atom is selected from the Group VIII elements of the Periodic table.

10. The method as recited in claim 6 wherein the step of conducting a first measurement is repeated more than once to provide measurement information reflecting a desired surface area within the diamond body.

11. A method for nondestructively obtaining measurement information within a plurality of ultra-hard polycrystalline constructions, each ultra-hard polycrystalline construction comprising a polycrystalline diamond body, wherein the measurement information is of a region within the polycrystalline diamond body that comprises less catalyst material than present in another region of the polycrystalline diamond body, and wherein the method comprises the steps of:

conducting a first measurement using a device comprising an x-ray source and x-ray detector by directing x-rays generated by the source onto a surface of the body of one or more of the ultra-hard polycrystalline constructions, receiving x-ray fluorescence from the body, and deriving measurement information from the received x-ray fluorescence; and

using a nondestructive technique that is different than that used to conduct the first measurement to obtain a second measurement of one or more of the ultra-hard polycrystalline constructions;

wherein during the step of conducting a first measurement an interface between the region comprising less catalyst material and an adjacent region of the diamond body is measured.

12. The method as recited in claim 11 further comprising generating a map of the interface from measurement information taken along a designated surface area.