| タイトル | Sintering Characteristics of Multilayered Thermal Barrier Coatings Under Thermal Gradient and Isothermal High Temperature Annealing Conditions |
| 本文（外部サイト） | http://hdl.handle.net/2060/20150000862 |
| 著者（英） | Bhattacharya, Rabi; Schmitt, Michael P.; Rai, Amarendra K.; Wolfe, Douglas E.; Zhu, Dongming |
| 著者所属（英） | NASA Glenn Research Center |
| 発行日 | 2014-07-01 |
| 言語 | eng |
| 内容記述 | Pyrochlore oxides have most of the relevant attributes for use as next generation thermal barrier coatings such as phase stability, low sintering kinetics and low thermal conductivity. One of the issues with the pyrochlore oxides is their lower toughness and therefore higher erosion rate compared to the current state-of-the-art TBC material, yttria (6 to 8 wt%) stabilized zirconia (YSZ). In this work, sintering characteristics were investigated for novel multilayered coating consisted of alternating layers of pyrochlore oxide viz Gd2Zr2O7 and t' low k (rare earth oxide doped YSZ). Thermal gradient and isothermal high temperature (1316 C) annealing conditions were used to investigate sintering and cracking in these coatings. The results are then compared with that of relevant monolayered coatings and a baseline YSZ coating. |
| NASA分類 | Fluid Mechanics and Thermodynamics; Mechanical Engineering; Metals and Metallic Materials |
| レポートNO | E-18935
NASA/TM-2014-218339
GRC-E-DAA-TN14787 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/60464 |
