The slide member and the production method and the mechanical seal ring and the mechanical seal which use this

摘要

Main phase and the said main phase which designate the silicon carbide as the main component with the constitution which differs, at least containing boron, silicon and carbon, it possesses the sliding aspect which consists of the silicon carbide quality sintered body which possesses with the secondary phase which becomes it confronts all pore above the pore diameter 10 millimicron in the said sliding aspect, below circularity 6 millimicrons, the slide member where ratio of the pore where at the same time it is 60 millimicron or less above pore diameter 10 millimicrons is 60% or more. Because of this, continuing long term use, it is possible to maintain satisfactory seal characteristic. As for the aforementioned secondary phase in the aforementioned silicon carbide quality sintered body it is good to be crystal phase of the granularity which scatters between plural aforementioned main phases. Because of this, as it is superior in retention efficiency of the lubricating liquid, it becomes something which is superior in thermal conductivity and heatproof shocking characteristic.