发明名称 |
SiC-BASED SINTERED COMPACT RING FOR MECHANICAL SEAL DEVICE, METHOD FOR MANUFACTURING THE SAME, AND MECHANICAL SEAL DEVICE AND LIGHT-WATER REACTOR PLANT |
摘要 |
<P>PROBLEM TO BE SOLVED: To provide a mechanical seal device which is excellent in sliding characteristics and mechanical characteristics such as strength and fracture toughness, prevents the falling-off of SiC particles or the like by suppressing embrittlement, and is usable as a liquid shaft seal device of rotating equipment using a liquid such as a pump; and to provide an SiC-based sintered compact ring to be used in the mechanical seal device and a method for manufacturing the same. <P>SOLUTION: This mechanical seal device includes an SiC-based sintered compact rotating ring and a carbon-based seat ring, where the SiC-based sintered compact ring has following properties: the average crystal grain size is ≤5 μm; the porosity is ≤5.0%; the average pore size is ≤2.0 μm; and the resistivity is ≤1 Ω cm at a room temperature. This ring is manufactured by granulating and forming an SiC raw material powder having ≥97% SiC purity and containing ≥92% 3C crystal, then sintering under pressure environment by press-sintering method. <P>COPYRIGHT: (C)2010,JPO&INPIT |
申请公布号 |
JP2010173927(A) |
申请公布日期 |
2010.08.12 |
申请号 |
JP20090021774 |
申请日期 |
2009.02.02 |
申请人 |
TOSHIBA CORP;SUMITOMO OSAKA CEMENT CO LTD |
发明人 |
TAKAHASHI MASASHI;KATAYAMA KENJIRO;YASUDA YUJI;UEDA HIROYUKI;KONISHI MIKIRO;TANAKA MASAMICHI |
分类号 |
C04B35/565;F16J15/34 |
主分类号 |
C04B35/565 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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