Title:
【発明の名称】腐食・酸化及び熱的過負荷に対して部材を保護するための保護層並びにその製造方法
Document Type and Number:
Japanese Patent JPH10507230
Kind Code:
A
Abstract:
A protective coating for protecting a component from corrosion and oxidation at a high temperature and from excessive thermal stress, has a heat insulation layer including a ceramic material and an adhesion-promoting layer including a rhenium containing metal alloy. The metal alloy belongs to the alloys covered by the general term MCrAlY, where M represents cobalt and/or nickel and Y represents yttrium and/or at least one equivalent metal from the group including scandium and the rare earth elements. The protective coating is distinguished by high oxidation resistance and corrosion resistance of the alloy, by outstanding thermal fatigue properties and an effective and permanent bond between the alloy and the ceramic heat insulation layer. As a result of the heat insulation, the temperature at the outer surface of the protective coating can be considerably higher than with purely metallic protective coatings, without an increased thermal load being exerted on the component. The protective coating is therefore particularly suitable for a gas turbine component exposed to a hot combustion gas, for example a guide vane, a rotor blade or a heat shield.
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Inventors:
Shimizutsu, Fleet Helm
Kutsuetsu, Norbert
Kutsuetsu, Norbert
Application Number:
JP51289696A
Publication Date:
July 14, 1998
Filing Date:
October 04, 1995
Export Citation:
Assignee:
Siemens Aktiengesellschaft
International Classes:
C23C4/02; C23C4/04; C23C4/06; C23C14/06; F01D5/28; C23C28/00; C23C30/00; F02C7/00; (IPC1-7): C23C30/00; F02C7/00; F01D5/28; C23C4/06
Attorney, Agent or Firm:
Tomimura Kiyoshi