High-temperature oxidation resistance of 7 wt. % Y₂O₃-ZrO₂ thermal barrier coatings (TBCs) irradiated by high-intensity pulsed ion beam (HIPIB) has been investigated in a cyclic oxidation condition at 1050 ℃×1 h. The characteristics of the co...
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https://www.riss.kr/link?id=A76286434
2007
English
학술저널
1801-1806(6쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
High-temperature oxidation resistance of 7 wt. % Y₂O₃-ZrO₂ thermal barrier coatings (TBCs) irradiated by high-intensity pulsed ion beam (HIPIB) has been investigated in a cyclic oxidation condition at 1050 ℃×1 h. The characteristics of the co...
High-temperature oxidation resistance of 7 wt. % Y₂O₃-ZrO₂ thermal barrier coatings (TBCs) irradiated by high-intensity pulsed ion beam (HIPIB) has been investigated in a cyclic oxidation condition at 1050 ℃×1 h. The characteristics of the columnar grains disappeared after HIPIB irradiation at the ion current densities of 100-200 A/㎠, and the irradiated surface presented a smoothed, densified feature after the remelting and ablation due to the HIPIB irradiation. The cross-sectional morphologies of HIPIB-irradiated TBCs show less oxidation of the NiCoCrAlY bonding layer, with a thinner thermally grown oxide (TGO) layer. The morphology observation is consistent with the results of cyclic oxidation test. It is found that the inward diffusion of oxygen through TBCs can be significantly impeded by the desified top layer by the HIPIB irradiation, thus limiting the oxidation of the bonding layer, improving the overall oxidation resistance of the irradiated TBCs.
목차 (Table of Contents)
자유 음장 조건에서 빔형성 방법을 이용한 수직 및 경사입사 음향 임피던스의 측정