Title:
COMPOSITE STRUCTURE AND PROCESS FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2011/021487
Kind Code:
A1
Abstract:
Disclosed is a composite structure comprising iridium as a base and a platinum alloy with which the base is covered, wherein the iridium is prevented from oxidatively volatilizing or ablating and the base (iridium) and the cover (platinum alloy) are prevented from diffusing into each other and thereby generating Kirkendall voids. The composite structure is characterized in that of the surfaces of the structure comprising iridium or an iridium-based alloy, the surface region which is to be exposed to an oxygenic atmosphere at least during use has been coated with a cover having a two-layer structure, that the cover having a two-layer structure is composed of an outer layer comprising platinum or a platinum-rhodium alloy and an inner layer bonded to the outer layer, the inner layer comprising platinum or a platinum-rhodium alloy and containing a metal species, and that the inner layer has particles of the oxide of the metal species in the surface on the reverse side from the surface in contact with the outer layer, the particles having precipitated in a dispersed state.
Inventors:
HOSHINO AKINORI (JP)
Application Number:
PCT/JP2010/062815
Publication Date:
February 24, 2011
Filing Date:
July 29, 2010
Export Citation:
Assignee:
FURUYA METAL CO LTD (JP)
HOSHINO AKINORI (JP)
HOSHINO AKINORI (JP)
International Classes:
B32B15/01; B23K9/04; C03B5/43; C23C28/00
Foreign References:
| JP2002180268A | 2002-06-26 | |||
| JP2002167674A | 2002-06-11 | |||
| JP2009523696A | 2009-06-25 |
Attorney, Agent or Firm:
IMASHITA, Katsuhiro et al. (JP)
Under now Katsuhiro (JP)
Under now Katsuhiro (JP)
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