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Microstructural evolution and mechanical properties of vertical-cracked thermal barrier coatings in thermal exposure
- Authors
- Lu, Zhe; Myoung, Sangwon Wong; Jang, Tae-Sik; Lee, Kang-Hyeon; Lee, Je Hyun; Jung, Yeongil Gill; Paik, Un Gyu
- Issue Date
- Jun-2012
- Publisher
- Trans Tech Publications Ltd.
- Keywords
- Air plasma-sprayed coating; Feedstock; Thermal barrier coating; Thermal exposure; Vertical crack
- Citation
- Key Engineering Materials, v.512-515, pp 1040 - 1044
- Pages
- 5
- Indexed
- SCOPUS
- Journal Title
- Key Engineering Materials
- Volume
- 512-515
- Start Page
- 1040
- End Page
- 1044
- ISSN
- 1013-9826
1662-9795
- Abstract
- The effects of intrinsic feature of feedstock in air plasma-sprayed (APS) coatings on the microstructure and mechanical properties of vertical-cracked thermal barrier coatings (TBCs) were investigated in thermal exposure. The microstructure after the thermal exposure for 400 h is densified, while after the thermal exposure for 800 h various defects such as interlamellar cracks and the vertical and horizontal cracks are newly developed, even though the total porosity is decreased. The microstructure of the TBC prepared with 204 C-NS is more porous than that of the TBC with 204NS, showing higher mechanical properties and better thermal stability in the TBC with 204 NS.
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Related Researcher
- Paik, Ungyu
- COLLEGE OF ENGINEERING (DEPARTMENT OF ENERGY ENGINEERING)