Feasibility Assessment of Self-Grading Metallic Bond Coat Alloys for EBCs/TBCs to Protect Si-Based Ceramics

Journal Article · Sat Jan 01 00:00:00 EST 2005 · Scripta Materialia

DOI:https://doi.org/10.1016/j.scriptamat.2004.10.024· OSTI ID:978036

Brady, Michael P ^[1]; Armstrong, Beth L ^[1]; Lin, Hua-Tay ^[1]; Lance, Michael J ^[1]; More, Karren Leslie ^[1]; Walker, Larry R ^[1]; Huang, F ^[2]; Weaver, Mark ^[3]

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1. ORNL
2. University of Alabama, Normal
3. University of Alabama, Tuscaloosa

A sputtered {gamma} (TiAl)+Laves TiAlCr coating formed an adherent Al{sub 2}O{sub 3} scale on SN 282 Si{sub 3}N{sub 4} when oxidized. A Ti-N rich layer was formed at the TiAlCr-Si{sub 3}N{sub 4} interface, which effectively resulted in beneficial local Al enrichment underneath the growing Al{sub 2}O{sub 3} scale, rather than detrimental Al loss to the substrate.

• 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: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 978036
• Journal Information: Scripta Materialia, Vol. 52, Issue 5; ISSN 1359-6462
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALLOYS
CERAMICS
COATINGS