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논문 기본 정보

자료유형
학술저널
저자정보
Lu, Zhe (School of Nano & Advanced Materials Engineering, Changwon National University) Lee, Seoung Soo (School of Nano & Advanced Materials Engineering, Changwon National University) Lee, Je-Hyun (School of Nano & Advanced Materials Engineering, Changwon National University) Jung, Yeon-Gil (School of Nano & Advanced Materials Engineering, Changwon National University)
저널정보
한국재료학회 한국재료학회지 한국재료학회지 제25권 제10호
발행연도
2015.1
수록면
571 - 576 (6page)

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The effects of coating thickness on the delamination and fracture behavior of thermal barrier coating (TBC) systems were investigated with cyclic flame thermal fatigue (FTF) and thermal shock (TS) tests. The top and bond coats of the TBCs were prepared by electron beam-physical vapor deposition and low pressure plasma spray methods, respectively, with a thickness ratio of 2:1 in the top and bond coats. The thicknesses of the top coat were 200 and $500{\mu}m$, and those of the bond coat were 100 and $250{\mu}m$. FTF tests were performed until 1140 cycles at a surface temperature of $1100^{\circ}C$ for a dwell time of 5 min. TS tests were also done until more than 50 % delamination or 1140 cycles with a dwell time of 60 min. After the FTF for 1140 cycles, the interface microstructures of each TBC exhibited a sound condition without cracking or delamination. In the TS, the TBCs of 200 and $500{\mu}m$ were fully delaminated (> 50 %) within 171 and 440 cycles, respectively. These results enabled us to control the thickness of TBC systems and to propose an efficient coating in protecting the substrate in cyclic thermal exposure environments.

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