公开(公告)号：US20210238098A1

公开(公告)日：2021-08-05

申请号：US17156555

申请日：2021-01-23

Applicant: DIAMOND INNOVATIONS, INC.

Inventor： Rui SHAO ,  Lawrence Dues

IPC: C04B35/563 ,  C04B35/626 ,  C04B35/645 ,  B23B27/14

Abstract: A cubic boron nitride (cBN)-based composite including about 30-65 vol. % cBN, about 3-30 vol. % zirconium (Zr)-containing compounds, about 0-10 vol. % cobalt-tungsten-borides (CoxWyBz), about 2-30 vol. % aluminum oxide (Al2O3), about 0.5-10 vol. % tungsten borides, and less than or equal to about 5 vol. % aluminum nitride (AlN).

公开(公告)号：US20170355644A1

公开(公告)日：2017-12-14

申请号：US15527764

申请日：2015-11-18

Applicant: DIAMOND INNOVATIONS, INC.

Inventor： Jacob PALMER ,  Lawrence DUES ,  Rui SHAO ,  Gerold WEINL

IPC: C04B35/5831 ,  C04B35/63 ,  C04B35/645 ,  C04B35/626

CPC classification number: C04B35/5831 ,  C04B35/6261 ,  C04B35/6264 ,  C04B35/6303 ,  C04B35/645 ,  C04B2235/3847 ,  C04B2235/386 ,  C04B2235/3886 ,  C04B2235/402 ,  C04B2235/405 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5472 ,  C04B2235/656 ,  C04B2235/80

Abstract: Multi-step milling processes to prepare cBN composite powder forms a first powder mixture by adding a binder and a first cBN component, mills the first powder mixture for a first time period, combines a second cBN component with the milled first powder mixture to form a second powder mixture, and mills the second powder mixture for a second time period (less than the first time period) to form the cBN composite powder. A ratio of the D50 value of the second cBN component to the D50 value of the first cBN component is at least 3.0. Two-step milling with different milling times for the two cBN component fractions controls the amount of mill debris in the cBN composite powder mixture. Further processing of the cBN composite powder under HPHT conditions forms a cBN-based ceramic with an average value of a cBN particle free diameter of less than 2.0 microns.