B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
B23B 27/20 (2006.01) B22F 3/24 (2006.01) B23B 27/18 (2006.01) C04B 41/49 (2006.01) C04B 41/50 (2006.01) C04B 41/52 (2006.01) C04B 41/53 (2006.01) C04B 41/84 (2006.01) C04B 41/85 (2006.01) C04B 41/87 (2006.01) C04B 41/89 (2006.01) C04B 41/91 (2006.01) C22C 26/00 (2006.01) C23C 30/00 (2006.01)
Patent
CA 2321638
A sintered diamond tool which is excellent in resistance to deposition and to breakage and has high strength. A sintered diamond tool (20) comprises a tool substrate (22) comprising sintered diamond and a surface layer (21) formed on the surface of the tool substrate (22). The surface layer (21) comprises at least one of silicon, an oxide of silicon, a carbide of silicon, a nitride of silicon and a solid solution thereof. The tool substrate (22) comprises an internal part (22b) which contains an iron group metal in a first content and a surface part (22a) which surrounds the internal part (22) and contains an iron group metal in a second content being lower than the first content.
L'invention concerne un outil à diamant fritté qui présente une excellente résistance à la déposition et à la rupture, tout en ayant une résistance mécanique élevée. Un outil (20) à diamant fritté comporte un substrat d'outil (22) comprenant un diamant fritté et une couche de surface (21) formée sur la surface du substrat d'outil (22). La couche de surface (21) comporte au moins du silicium, un oxyde de silicium, un carbure de silicium, un nitrure de silicium et une de leurs solutions solides. Le substrat d'outil (22) comporte une partie intérieure (22b) contenant un métal du groupe du fer selon une première teneur, et une partie de surface (22a) entourant la partie intérieure (22) et contenant un métal du groupe du fer selon une seconde teneur, inférieure à la première.
Abe Makoto
Kanada Yasuyuki
Kuroda Yoshihiro
Nakai Tetsuo
Ogata Yasunobu
G. Ronald Bell & Associates
Sumitomo Electric Industries Ltd.
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