POLYCRYSTALLINE DIAMOND COMPOSITE SHEET HAVING CONTINUOUS GRADIENT TRANSITION LAYER AND PREPARATION METHOD THEREOF
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United States of America Patent
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Issued Date -
Mar 27, 2025
app pub date -
Mar 13, 2024
filing date -
Mar 13, 2024
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Abstract
The disclosure discloses a polycrystalline diamond composite sheet having a continuous gradient transition layer and a 3D printing preparation method thereof. The polycrystalline diamond composite sheet consists of a polycrystalline diamond layer, a continuous gradient transition layer, and a cemented carbide substrate from top to bottom, in which the continuous gradient transition layer consists of diamond and cemented carbide. Along a direction from the cemented carbide substrate to the polycrystalline diamond layer, a content of the cemented carbide in the continuous gradient transition layer decreases from 100% to 0, and a content of the diamond increases from 0 to 100%. By designing and combining the continuous gradient transition layer with 3D printing technology, the disclosure realizes a continuous change in the two materials of diamond and cemented carbide, thereby eliminating the sudden change interface of the materials inside the diamond composite sheet.
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