Creep and Corrosion Testing of Aluminide Coatings on Ferritic-Martensitic Substrates

Conference · Mon Jan 01 00:00:00 EST 2007

OSTI ID:931295

Dryepondt, Sebastien N ^[1]; Zhang, Ying ^[2]; Pint, Bruce A ^[1]

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1. ORNL
2. Tennessee Technological University

Pack and chemical vapor deposited (CVD) aluminide coatings on commercial ferritic-martensitic Fe-9Cr-2W steel are being investigated by creep and corrosion testing at 650 C. Results from different coating thicknesses show that the coated region makes no contribution to the creep strength. The creep behavior of uncoated material was studied after various heat treatments to simulate the coating process and typical secondary heat treatments. Alternating creep and corrosion exposures showed little effect on the creep strength of uncoated material but coated materials became progressively weaker. The coatings were protective in wet air at 650 C after creep testing.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Temperature Materials Lab. (HTML); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Shared Research Equipment Collaborative Research Center
• Sponsoring Organization: FE USDOE - Office of Fossil Energy (FE)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 931295
• Resource Relation: Conference: NACE Corrosion 2007, Nashville, TN, USA, 20070313, 20070317
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AIR
COATINGS
CORROSION
CREEP
HEAT TREATMENTS
STEELS
SUBSTRATES
TESTING
Ferritic steel
oxidation
creep
aluminide coatings