| 摘要 |
PURPOSE:To obtain a diamond-based sintered material having excellent wear resistance, stability at high temperature and high hardness by subjecting mixed powder containing a fixed ratio of alkaline earth carbonate, carbon convertible to diamond and diamond to ultra-high pressure sintering. CONSTITUTION:1-25vol.% alkaline earth carbonate is mixed with 1-10vol.% carbon powder convertible to diamond and residual percentage of diamond powder. Carbonate of Mg, Ca, Sr or Ba and complex carbonate of said carbonates are generally termed as said alkaline earth carbonate. Said mixture is subjected to ultra-high pressure sintering to afford the aimed diamond-based sintered material. |
