| Abstrakt: |
Maintaining good adhesion of alumina scales to the surface of heat-resistant alloys is crucial for long-term cyclic oxidation resistance. Traditionally, this is accomplished by doping the alloy with about 0.1% reactive elements. More recently, excellent adhesion has been produced without reactive elements by reducing the sulfur impurity level to less than 1 ppm. Research opportunities exist in the fundamentals of sulfur segregation, thermodynamics, and interfacial bonding. [ABSTRACT FROM AUTHOR] |
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