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논문 기본 정보

자료유형
학술저널
저자정보
Kang Hyun Choi (Pohang University of Science and Technology) Hyun-Su Kim (Seoul National University) Chang Hyun Park (Chungnam National University) Gon-Ho Kim (Seoul National University) Kyoung Ho Baik (Chungnam National University) Sung Ho Lee (Agency for Defense Development) 김태형 (청주대학교) Hyoung Seop Kim (Pohang University of Science and Technology)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.22 No.5
발행연도
2016.1
수록면
817 - 824 (8page)

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Thermal barrier coatings are widely used in aerospace industries to protect exterior surfaces from harsh environments. In this study, functionally graded materials (FGMs) were investigated with the aim to optimize their high temperature resistance and strength characteristics. NiCrAlY bond coats were deposited on Inconel-617 superalloy substrate specimens by the low vacuum plasma spraying technique. Functionally graded Ni-yttria-stabilized zirconia (YSZ) coatings with gradually varying amounts of YSZ (20%-100%) were fabricated from composite powders by vacuum plasma spraying. Heat shield performance tests were conducted using a high- temperature plasma torch. The temperature distributions were measured using thermocouples at the interfaces of the FGM layers during the tests. A model for predicting the temperature at the bond coating–substrate interface was established. The temperature distributions simulated using the finite element method agreed well with the experimental results.

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