Method and system for perceiving a boundary between a first region and second region of a superabrasive volume
View Patent ↗Methods of evaluating a superabrasive volume or a superabrasive compact are disclosed. One method may comprise exposing a superabrasive volume to radiation and detecting a response of the radiation when it interacts with the superabrasive volume. In one embodiment, a boundary may be perceived between a first region and a second region of the superabrasive volume in response to detecting the response of the radiation. In one particular embodiment, a boundary between a catalyst-containing region and a catalyst-diminished region of a polycrystalline diamond volume may be perceived. Additionally, a depth to which a catalyst-diminished region extends within a polycrystalline diamond volume of a polycrystalline diamond compact may be measured based on the monitored response of the radiation. In a further embodiment, a non-planar boundary between the two regions may be mapped. A system configured to evaluate a superabrasive volume is also disclosed.
1. A system configured to evaluate a superabrasive volume, the system comprising:
a radiation source;
a radiation detector;
calibration data for correlating an amount of detected radiation to an indicated depth of a first region of at least two different regions of a coherent matrix of a superabrasive volume, the indicated depth being approximately 500 μm or greater from a working surface of the volume superabrasive material.
2. The system of claim 1 , wherein the calibration data comprises a first measured amount of radiation associated with a first depth and at least a second measured amount radiation associated with a second depth.
3. The system of claim 1 , wherein the calibration data is designed to correlate the amount of detected radiation to the indicated depth of a first region of a polycrystalline diamond volume.
4. The system of claim 3 , wherein the calibration data is designed to correlate the amount of detected radiation to the indicated depth of a catalyst-diminished region of the polycrystalline diamond volume.
5. The system of claim 3 , wherein the calibration data is designed to correlate the amount of detected radiation to the indicated depth of a cobalt-diminished region of the polycrystalline diamond volume.
6. The system of claim 1 , wherein the calibration data is designed to correlate the amount of detected radiation to the indicated depth of a superabrasive volume exhibiting a coercivity of about 115 Oerstads (Oe) or more.
7. The system of claim 6 , wherein the calibration data is designed to correlate the amount of detected radiation to the indicated depth of a superabrasive volume exhibiting a coercivity of about 115 Oe to about 175 Oe.
8. The system of claim 7 , wherein the calibration data is designed to correlate the amount of detected radiation to the indicated depth of a superabrasive volume exhibiting a specific magnetic saturation of about 15 Gauss·cm 3 /grams or less.
9. The system of claim 8 , wherein the calibration data is designed to correlate the amount of detected radiation to the indicated depth of a superabrasive volume having diamond grains that exhibit an average grain size of about 30 μm or less.
10. The system of claim 1 , wherein the calibration data is designed to correlate the amount of detected radiation to the indicated depth of a superabrasive volume having diamond grains that exhibit an average grain size of about 30 μm or less.
11. The system of claim 1 , wherein the calibration data is designed to correlate the amount of detected radiation to the indicated depth of a superabrasive volume exhibiting a specific magnetic saturation of about 15 Gauss·cm 3 /grams or less.
12. The system of claim 1 , wherein the calibration data is designed to correlate the amount of detected radiation to the indicated depth of a superabrasive volume exhibiting a G ratio of at least about 4.0×10 6 .
13. The system of claim 1 , wherein the indicated depth is approximately 600 μm or greater from the working surface.
14. The system of claim 1 , wherein the indicated depth is approximately 700 μm or greater from the working surface.
15. The system of claim 1 , wherein the radiation source includes a beta particle source.
16. The system of claim 15 , wherein the radiation detector comprises a Geiger-Mueller tube.
17. The system of claim 1 , wherein the radiation source includes an x-ray source.
18. The system of claim 1 , wherein the calibration data is designed to correlate the amount of detected radiation to the indicated depth of a superabrasive volume exhibiting a coercivity of about 115 Oe to about 175 Oe, and wherein the calibration data is designed to correlate the amount of detected radiation to the indicated depth of a superabrasive volume exhibiting a specific magnetic saturation of about 15 Gauss·cm 3 /grams or less.
19. The system of claim 18 , wherein the calibration data is designed to correlate the amount of detected radiation to the indicated depth of a superabrasive volume having diamond grains that exhibit an average grain size of about 30 μm or less.