June 2011

Conference Paper

Determination of the DBTT of Aluminide Coatings and its Influence on the Mechanical Behavior of Coated Specimens

By:
Dryepondt, Sebastien N; Pint, Bruce A
Journal Name:
Surface and Coatings Technology
Page Number:
1195-1199
Volume:
205
Issue Number:
5
Publication Date:
June 28, 2011
Conference Name:
ICMCTF
Conference Location:
San Diego, California, United States of America
View DOI Listing:
https://doi.org/10.1016/j.surfcoat.2010.08.081

Abstract

The ductility of various coatings deposited by chemical vapor deposition, pack cementation and slurry processes on Fe- and Ni-based alloys was characterized by indentation at room temperature. A hot indentation apparatus has also been developed to more rapidly determine the ductile to brittle transition temperature of coated specimens. Creep testing has been conducted on bare and coated alloy 230 (NiCrW) specimens at 800°C with a significant decrease in creep life observed. Based on the observed failure of coated 230 specimens, the impact of coating ductility on substrate creep properties is discussed.


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