Strategy to improve the high-temperature mechanical properties of Cr-alloy coatings

TitleStrategy to improve the high-temperature mechanical properties of Cr-alloy coatings
Publication TypeJournal Article
Year of Publication2007
AuthorsGines, MJL, Williams, FJ, Schuh, CA
JournalMetallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
Volume38A
Issue6
Pagination1367 - 1370
Date Published2007/06//
Abstract

Electroplated Cr-C alloy coatings exhibit significant increases in hardness and strength when exposed to elevated temperatures up to about 600 degrees 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 degrees 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.