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Rare earth modified high strength oxidation resistant superalloy with enhanced coating compatibility

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
The invention concerns a Ni based alloy suitable for single 5 crystalline, directionally solidified or polycrystalline components to be used at high temperatures. The alloy is a'/ alloy and consists of different alloying elements within defined ranges. Among other defined ranges of elements, the alloy contains Pd in a significant amount sufficient to provide the alloy with an improved resistance against hydrogen embrittlement. The invention also concerns a component designed for use as a component in a high temperature environment. Furthermore, the invention concerns a gas turbine arrangement. Moreover, the invention concerns the use of Pd for providing an alloy with improved resistance against hydrogen embrittlement. The inclusion of two or more rare earth elements in the alloy provides enhanced bondcoat compatibility.
Arrell, Douglas J. (Oviedo, FL), James, Allister W. (Orlando, FL)
Siemens Power Generation, Inc.
11/ 788,295
April 19, 2007
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH [0002] The U.S. Government has a paid-up license in the invention and the right in limited circumstances to require that patent owner to license others on reasonable terms as provided for by the terms of DE-FC26-05NT42644 awarded by the Department of Energy.