| 摘要 |
A diamond-bearing assembly comprises opposed diamond-bearing surfaces (10, 12), at least one of which is free of any Group VIII metals such as cobalt. Preferably, each of the surfaces (10, 12) is provided by a surface of a diamond compact (14, 16), such diamond compact containing substantial diamond-to-diamond bonding, and a second phase which contains silicon in the form of silicon and/or silicon carbide. <IMAGE> |
