Use of Capacitance And Eddy Currents to Analyze Polycrystalline Diamond
First Claim
1. A method of characterizing a quality of a polycrystalline structure, comprising:
- obtaining a leached component comprising a polycrystalline structure, the polycrystalline structure comprising a leached layer and an unleached layer positioned adjacent to the leached layer, the leached layer having at least a portion of a catalyst material removed from therein;
measuring at least one measured capacitance value of the leached component;
measuring at least one measured eddy current value of the leached component;
characterizing a first quality of the polycrystalline structure, the first quality being based upon the at least one measured capacitance value;
characterizing a second quality of the polycrystalline structure, the second quality being based upon the at least one measured eddy current value; and
determining an overall quality of the polycrystalline structure, the overall quality being based upon the first quality and the second quality.
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Accused Products
Abstract
A method for non-destructively characterizing one or more regions within a polycrystalline structure using capacitance and eddy current measurements. The eddy current measurements include at least one of an impedance amplitude and a phase shift angle. The capacitance is measured one or more times and compared to a first calibration curve to determine an estimated leaching depth within the polycrystalline structure. A first data scattering range is ascertained from the capacitance measurements to determine a relative porosity or the leaching quality within the polycrystalline structure. The eddy current is measured one or more times and compared to a second calibration curve to determine an estimated leaching depth within the polycrystalline structure. A second data scattering range is ascertained from the eddy current measurements to determine a relative porosity or the leaching quality within the polycrystalline structure. Results from both measurements are used to ascertain a quality of the polycrystalline structure.
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Citations
22 Claims
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1. A method of characterizing a quality of a polycrystalline structure, comprising:
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obtaining a leached component comprising a polycrystalline structure, the polycrystalline structure comprising a leached layer and an unleached layer positioned adjacent to the leached layer, the leached layer having at least a portion of a catalyst material removed from therein; measuring at least one measured capacitance value of the leached component; measuring at least one measured eddy current value of the leached component; characterizing a first quality of the polycrystalline structure, the first quality being based upon the at least one measured capacitance value; characterizing a second quality of the polycrystalline structure, the second quality being based upon the at least one measured eddy current value; and determining an overall quality of the polycrystalline structure, the overall quality being based upon the first quality and the second quality. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of characterizing a quality of a polycrystalline structure, comprising:
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obtaining a leached component comprising a polycrystalline structure, the polycrystalline structure comprising a leached layer and an unleached layer positioned adjacent to the leached layer, the leached layer having at least a portion of a catalyst material removed from therein; measuring at least one measured capacitance value of the leached component; measuring at least one measured eddy current value of the leached component; characterizing a quality of the polycrystalline structure based upon the at least one measured capacitance value of the leached component and upon the at least one measured eddy current value of the leached component, the quality comprising at least one of an estimated leaching depth of the leached component, a relative amount of catalyst remaining within the leached layer, and a relative porosity of the polycrystalline structure of the leached component. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification