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1082 |
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Investigation of a novel plasma sprayed YSZ ceramic coating deposited by amorphous YSZ ceramic powder feedstock |
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Feng Lin* / GRIPM Advanced Materials Co. Ltd General Research Institute for Nonferrous Metals (GRINM), China Zhong Yuan Yang/ GRIPM Advanced Materials Co., Ltd General Research Institute for Nonferrous Metals (GRINM), China Jing Hui Liu/ GRIPM Advanced Materials Co., Ltd General Research Institute for Nonferrous Metals (GRINM), China Shi Kai Yan/ GRIPM Advanced Materials Co., Ltd General Research Institute for Nonferrous Metals (GRINM), China Xue Feng Li/ GRIPM Advanced Materials Co., Ltd General Research Institute for Nonferrous Metals (GRINM), China Jing Huai Zhang/ GRIPM Advanced Materials Co., Ltd General Research Institute for Nonferrous Metals (GRINM), China Li Min Wang/ GRIPM Advanced Materials Co., Ltd General Research Institute for Nonferrous Metals (GRINM), China Jia Ping Zhang/ Shenyang Liming Aero-Engine Group Corporation, China |
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An amorphous Yttria Stabilized Zirconia (YSZ) ceramic powder feedstock is successfully used to produce a novel YSZ ceramic coating by plasma spraying process, in this paper. Unlike conventional atmosphere plasma spray (APS) and solution precursor plasma spray (SPPS) YSZ coatings, the YSZ ceramic coating fabricated by plasma spraying amorphous YSZ ceramic powder feedstock reveals complex structure of cell and ultrafine particles instead of conventional splats and porous structure. A large number of ultrafine particles are found in the cell. Phase structure of the YSZ ceramic coating is tetragonal. Porosity is about 28%. In addition, thermal cycling test is nearly 370 cycles, and the thermal conductivity is 1.0 W.m-1.K-1, at 1200?? temperature. Based on these excellent properties, the YSZ ceramic coating fabricated by plasma spraying amorphous YSZ ceramic powder feedstock should be used as high-temperature abradable sealing coatings and thermal barrier coatings (TBCs). |