发明名称 Sliding member, manufacturing method thereof, mechanical seal ring using sliding member and mechanical seal using mechanical seal ring
摘要 A sliding member having a sliding surface comprising a silicon carbide sintered body having a primary phase comprising mainly silicon carbide, and a subphase having a different composition from the primary phase and containing at least boron, silicon and carbon. The ratio of pores having a roundness of 6 μm or less and a pore diameter of 10 to 60 μm with respect to all pores having a pore diameter of 10 μm or more in the sliding surface is 60% or more. This enables retention of good seal properties even in a long-term continuous use. The subphase in the silicon carbide sintered body is preferably granular crystal phases dotted among a plurality of the primary phases. This provides excellent lubricating liquid holding performance as well as excellent thermal conductivity and excellent thermal shock resistance properties.
申请公布号 US8916488(B2) 申请公布日期 2014.12.23
申请号 US200712447649 申请日期 2007.10.30
申请人 Kyocera Corporation 发明人 Ishimine Yuusaku;Takigawa Kazuaki
分类号 C04B35/565;C04B35/64;C04B38/00;C04B38/06;F16J15/34;C04B111/20;C04B111/00 主分类号 C04B35/565
代理机构 Volpe and Koenig, P.C. 代理人 Volpe and Koenig, P.C.
主权项 1. A sliding member comprising: a primary phase; and a subphase, wherein the primary phase comprises silicon carbide as a main component, and the subphase has a different composition from the primary phase and comprises boron, silicon and carbon; wherein a ratio of spherical pores having a roundness of 6 μm or less and a pore diameter of 10 to 60 μm with respect to all pores having a pore diameter of 10 μm or more in the sliding surface is 75% to 90%; wherein a dispersion density of the spherical pores is 60 pieces/mm2 or more; and wherein a maximum diameter of each pore in the sliding surface is 100 μm or less, wherein the subphase in the silicon carbide sintered body is a granular crystal phase dotted among a plurality of the primary phases, and wherein the aspect ratio of the subphase is 2.5 or less.
地址 Kyoto JP