公开(公告)号：US20220016702A1

公开(公告)日：2022-01-20

申请号：US16947015

申请日：2020-07-15

申请人： Millennitek, LLC

发明人： Andrew M. Spradling ,  Lawrence W. Townsend

IPC分类号： B22F9/04 ,  B22F3/12

摘要： A method of forming tungsten tetraboride, by combining tungsten and boron in a molar ratio of from about 1:6 to about 1:12, respectively, and firing the combined tungsten and boron in the hexagonal boron nitride crucible at a temperature of from about 1600 C to about 2000C, to form tungsten tetraboride.

公开(公告)号：US20220307109A1

公开(公告)日：2022-09-29

申请号：US17805551

申请日：2022-06-06

申请人： Millennitek, LLC

发明人： Andrew M. Spradling ,  Lawrence W. Townsend ,  Kevin J. Hughes

IPC分类号： C22C1/05 ,  C01B35/04 ,  C22C29/14

摘要： A method of forming cemented tungsten tetraboride, by combining tungsten and boron in a molar ratio of from about 1:6 to about 1:12, respectively, and firing the combined tungsten and boron in a hexagonal boron nitride crucible at a temperature of from about 1600 C to about 2000 C, to form tungsten tetraboride, milling the tungsten tetraboride to a powder, adding a metal binder to the tungsten tetraboride powder to produce a metal-tungsten tetraboride mixture, compressing the metal-tungsten tetraboride mixture, and sintering the compressed metal-tungsten tetraboride mixture to form cemented tungsten tetraboride.

公开(公告)号：US11351609B2

公开(公告)日：2022-06-07

申请号：US16947015

申请日：2020-07-15

申请人： Millennitek, LLC

发明人： Andrew M. Spradling ,  Lawrence W. Townsend

IPC分类号： B22F9/04 ,  B22F3/12 ,  C01B35/04 ,  C22C29/14 ,  C22C1/05 ,  G21F1/06 ,  G21F1/08 ,  C04B35/58 ,  G21C11/02

摘要： A method of forming tungsten tetraboride, by combining tungsten and boron in a molar ratio of from about 1:6 to about 1:12, respectively, and firing the combined tungsten and boron in the hexagonal boron nitride crucible at a temperature of from about 1600 C to about 2000 C, to form tungsten tetraboride.