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Article
The deposition of aluminide and silicide coatings on γ-TiAl using the halide-activated pack cementation method
The halide-activated pack cementation method (HAPC) was utilized to deposit aluminide and silicide coatings on nominally stoichiometric γ-TiAl. The deposition temperature was 1000°C and deposition times ranged...
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Article
Correlation between the Microstructure, Growth Mechanism, and Growth Kinetics of Alumina Scales on a FeCrAlY Alloy
The microstructural development of an alumina scale formed on a model FeCrAlY alloy during oxidation at 1200 °C was characterized for up to 2000 hours of growth. Quantitative scanning electron microscopy (SEM)...
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Article
Compositional factors affecting the establishment and maintenance of Al2O3 scales on Ni–Al–Pt systems
The beneficial role played by platinum addition in promoting the formation of a protective Al2O3 scale on representative γ′-Ni3Al+γ-Ni coating compositions during high-temperature oxidation is discussed. This ben...
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Article
Structural Stability of Platinum-Group-Metal-Modified γ + γ′ Ni-Base Alloys
The structural and surface stabilities of two experimental γ-Ni+γ′-Ni3Al-base alloys containing Pt or Ir were investigated. These alloys are representative of alloys currently being developed to occupy a unique d...
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Article
Alloying-Element Loss During High-Temperature Processing of a Nickel-Base Superalloy
The effect of exposure at temperatures commonly used for wrought processing/heat treatment of nickel-base superalloys on the loss of alloying elements at the free surface has been determined. For this purpose,...
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Article
Kinetic Study of the Competitive Growth Between θ-Al2O3 and α-Al2O3 During the Early Stages of Oxidation of β-(Ni,Pt)Al Bond Coat Systems: Effects of Low Oxygen Partial Pressure and Temperature
An oxidation study of β-(Ni,Pt)Al commercial bond coat systems was carried by means of TGA analysis during isothermal treatments at temperatures from 1273 K to 1423 K (1000 °C to 1150 °C). The effect of oxygen pa...
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Chapter and Conference Paper
Effects of CO2 Cover Gas and Yttrium Additions on the Oxidation of AlMg Alloys
AlMg alloys are known to suffer from problematic that can result in significant dross formation and loss of Mg from the melt. Historically, beryllium has been used to minimize the as it forms a protective ...