Strategy to Improve the High-Temperature Mechanical Properties of Cr-Alloy Coatings
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- Gines, M., Williams, F. & Schuh, C. Metall and Mat Trans A (2007) 38: 1367. doi:10.1007/s11661-007-9151-4
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Electroplated Cr-C alloy coatings exhibit significant increases in hardness and strength when exposed to elevated temperatures up to about 600 °C, owing to the evolution of their nanostructure. In this article, we describe a strategy by which this evolution can be shifted to even higher temperatures (approaching 850 °C), through a ternary addition of phosphorus. The resulting Cr-C-P coatings may be suitable for applications at higher service temperatures, where more conventional Cr-based coatings soften rapidly.