Title:
GASKET FOR PRESSURE VESSEL, AND METHOD FOR PRODUCING SAID GASKET
Document Type and Number:
WIPO Patent Application WO/2011/152332
Kind Code:
A1
Abstract:
Provided is a gasket for a pressure vessel, wherein the gasket is suitable for use as a consumable part, exerts sufficient strength, sealing properties and corrosion resistance even in a high-temperature and high-pressure state, has adequate surface hardness in relation to the material of the flange of the pressure vessel, and does not cause mutual diffusion with the flange. Specifically provided is a gasket (100) for a pressure vessel, wherein the gasket is disposed on the opening section of the pressure vessel and hermetically seals the aforementioned pressure vessel as a consequence of the sealing section of the gasket coming into contact with a flange having a surface formed from iridium or an iridium-based alloy. Additionally, the gasket is characterized in that a nickel-based alloy is used as a base (1), a nitride layer (2) formed from the nitride of a nickel-based alloy is formed on the surface of the base (1), and a coating layer (3) containing the oxide of a platinum-group metal is formed on the surface of the nitride layer (2).
Inventors:
SHIMAMUNE TAKAYUKI (JP)
AKATSUKA SHIGEHARU (JP)
MATSUSHITA KEIICHIRO (JP)
AKATSUKA SHIGEHARU (JP)
MATSUSHITA KEIICHIRO (JP)
Application Number:
PCT/JP2011/062325
Publication Date:
December 08, 2011
Filing Date:
May 30, 2011
Export Citation:
Assignee:
FURUYA METAL CO LTD (JP)
SHIMAMUNE TAKAYUKI (JP)
AKATSUKA SHIGEHARU (JP)
MATSUSHITA KEIICHIRO (JP)
SHIMAMUNE TAKAYUKI (JP)
AKATSUKA SHIGEHARU (JP)
MATSUSHITA KEIICHIRO (JP)
International Classes:
F16J15/08; F16J12/00
Foreign References:
| JP2002102671A | 2002-04-09 | |||
| JPH0276970A | 1990-03-16 | |||
| JPH0356691A | 1991-03-12 |
Attorney, Agent or Firm:
IMASHITA, Katsuhiro et al. (JP)
Under now Katsuhiro (JP)
Under now Katsuhiro (JP)
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Claims: