Metal treatment – Process of modifying or maintaining internal physical... – Surface melting
Patent
1997-07-14
2000-06-27
Wyszomierski, George
Metal treatment
Process of modifying or maintaining internal physical...
Surface melting
148518, 148527, 148535, C23C 1016, C23C 1050
Patent
active
060802464
ABSTRACT:
A high rhenium containing single crystal superalloy (30) is chromized, or coated with cobalt, before the conventional aluminising process steps to modify the surface of the high rhenium containing single crystal superalloy to prevent the formation of topologically close packed phases at the interface between the aluminide coating (32) and the rhenium containing single crystal superalloy. The invention is particularly applicable to platinum aluminide coatings, platinum aluminide-silicide coatings and aluminide-silicide coatings.
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The Minerals, Metals & Materials Society, W.C. Walston et al., "A New Type Of Microstructural Instability In Superalloys--SRZ", pp. 9-18, Sep., 1996.
Rolls-Royce PLC
Wyszomierski George
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