REFURBISHING OF CORRODED SUPERALLOY OR HEAT RESISTANT STEEL PARTS AND PARTS SO REFURBISHING

摘要

21 The invention relates to the refurbishing of a corroded superalloy or heat resistant steel part, in particular a gas turbine component like a gas turbine blade, having a surface with products of corrosion. According to the in- vention, the surface is cleaned, in particular by mechanical or chemical means, and an aluminide coating is applied to the cleaned surface. Subsequently, the aluminide coating is re- moved, whereby all products of corrosion which have still remained in the part to be refurbished are removed as well.