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Hertzian and nanoindentations on EBPVD-coated gadolinium zirconate thermal barrier materials
- Issue Date
- Sep-2007
- Publisher
- Trans Tech Publications Ltd
- Keywords
- EBPVD; Gadolinium; Hertzian/nano indentation; TBC; Zirconate ceramics
- Citation
- Solid State Phenomena, v.124-126, no.PART 2, pp.1349 - 1352
- Indexed
- SCOPUS
- Journal Title
- Solid State Phenomena
- Volume
- 124-126
- Number
- PART 2
- Start Page
- 1349
- End Page
- 1352
- ISSN
- 1012-0394
- Abstract
- New gadolinium-yttrium zirconate thermal barrier coating(TBC) material is deposited by electron beam PVD method, as an alternative to YSZ TBC layer for gas turbine blade applications. XRD analysis reveals that the new TBC material consists of thermally stable pyrochlore structure. Hertzian and nanoindentation evaluations reveal that gadolinium zirconate materials show superior properties as a TBC candidate material with high mechanical properties. The Y 2O3 doping improved hardness and elastic modulus of TBC layers. The indentation stress-strain curves by Hertzian indentation and the load-penetration depth curves by nanoindentation indicate that the new TBC layer has higher damage resistance combined with superior thermal insulation properties rather than commercial YSZ coatings.
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Collections - 서울 공과대학 > 서울 에너지공학과 > 1. Journal Articles
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Related Researcher
- Paik, Ungyu
- COLLEGE OF ENGINEERING (DEPARTMENT OF ENERGY ENGINEERING)