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Aqueous leaching solutions and methods of leaching at least one interstitial constituent from a polycrystalline diamond body using the same
Aqueous leaching solutions and methods of leaching at least one interstitial constituent from a polycrystalline diamond body using the same
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机译:水性浸出溶液和使用该浸出溶液从多晶金刚石体中浸出至少一种间隙成分的方法
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摘要
In an embodiment, a method of fabricating a leached polycrystalline diamond (“PCD”) body is disclosed. The PCD body includes bonded diamond grains defining interstitial regions at least a portion of which include at least one interstitial constituent disposed therein. The method includes leaching the PCD body with a leaching agent to remove at least a portion of the at least one interstitial constituent therefrom. The leaching agent includes a mixture having hydrofluoric acid in a first concentration of about 10 weight % to about 50 weight %, nitric acid in a second concentration of about 5 weight % to about 25 weight %, and water in a third concentration of about 25 weight % to about 85 weight %. Further embodiments relate to different leaching methods and different leaching agent compositions.
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