公开(公告)号：US11738315B2

公开(公告)日：2023-08-29

申请号：US17479553

申请日：2021-09-20

Applicant: US Synthetic Corporation

Inventor： Julie Ann Kidd ,  Heather Marie Schaefer ,  Chengkun Xu ,  Jason K. Wiggins ,  Matthew Brown ,  Cody Frisby

IPC: B01J3/06 ,  E21B10/56 ,  E21B10/567 ,  B24D18/00 ,  C01B32/28

CPC classification number: B01J3/062 ,  B24D18/00 ,  B24D18/0009 ,  B24D18/0027 ,  C01B32/28 ,  E21B10/56 ,  E21B10/567 ,  B01J2203/062

Abstract: In an embodiment, a polycrystalline diamond table includes a plurality of bonded diamond grains and a plurality of interstitial regions defined by the plurality of bonded diamond grains. The polycrystalline diamond table may be at least partially leached such that at least a portion of at least one interstitial constituent has been removed from at least a portion of the plurality of interstitial regions by exposure to a leaching agent. The leaching agent may include a mixture having a ratio of weight % hydrofluoric acid to weight % nitric acid of about 1.0 to about 2.4, and water in a concentration of about 50 weight % to about 85 weight %. Various other materials, articles, and methods are also disclosed.

公开(公告)号：US20220001348A1

公开(公告)日：2022-01-06

申请号：US17479553

申请日：2021-09-20

Applicant: US Synthetic Corporation

Inventor： Julie Ann Kidd ,  Heather Marie Schaefer ,  Chengkun Xu ,  Jason K. Wiggins ,  Matthew Brown ,  Cody Frisby

IPC: B01J3/06 ,  C01B32/28 ,  B24D18/00 ,  E21B10/567

Abstract: In an embodiment, a polycrystalline diamond table includes a plurality of bonded diamond grains and a plurality of interstitial regions defined by the plurality of bonded diamond grains. The polycrystalline diamond table may be at least partially leached such that at least a portion of at least one interstitial constituent has been removed from at least a portion of the plurality of interstitial regions by exposure to a leaching agent. The leaching agent may include a mixture having a ratio of weight % hydrofluoric acid to weight % nitric acid of about 1.0 to about 2.4, and water in a concentration of about 50 weight % to about 85 weight %. Various other materials, articles, and methods are also disclosed.

公开(公告)号：US11135560B1

公开(公告)日：2021-10-05

申请号：US16238454

申请日：2019-01-02

Applicant: US Synthetic Corporation

Inventor： Julie Ann Kidd ,  Heather Marie Schaefer ,  Chengkun Xu ,  Jason K. Wiggins ,  Matthew Brown ,  Cody Frisby

IPC: E21B10/56 ,  B01J3/06 ,  C01B32/28 ,  B24D18/00 ,  E21B10/44

Abstract: In an embodiment, a polycrystalline diamond table includes a plurality of bonded diamond grains and a plurality of interstitial regions defined by the plurality of bonded diamond grains. The polycrystalline diamond table may be at least partially leached such that at least a portion of at least one interstitial constituent has been removed from at least a portion of the plurality of interstitial regions by exposure to a leaching agent. The leaching agent may include a mixture having a ratio of weight % hydrofluoric acid to weight % nitric acid of about 1.0 to about 2.4, and water in a concentration of about 50 weight % to about 85 weight %. Various other materials, articles, and methods are also disclosed.

公开(公告)号：US10173899B1

公开(公告)日：2019-01-08

申请号：US15065246

申请日：2016-03-09

Applicant: US Synthetic Corporation

Inventor： Julie Ann Kidd ,  Heather Marie Schaefer ,  Chengkun Xu ,  Jason K. Wiggins ,  Matthew Brown ,  Cody Frisby

IPC: B01J3/00 ,  C22B23/00 ,  E21B10/56 ,  C01B31/06 ,  B24D18/00 ,  B01J3/06

Abstract: 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.