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| Nanostructured yttria stabilized zirconia coatings deposited by air plasma spraying | |
| 引用本文： | 周洪 李飞 何博 王俊 孙宝德. Nanostructured yttria stabilized zirconia coatings deposited by air plasma spraying[J]. 中国有色金属学会会刊, 2007, 17(2): 389-393. DOI: 10.1016/S1003-6326(07)60104-6 |
| 作者姓名： | 周洪 李飞 何博 王俊 孙宝德 |
| 作者单位： | State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200030, China |
| 基金项目： | Project supported by the Scientific Research Fund of Youth Teacher in Shanghai Jiaotong University |
| 摘 要： | Nanostructured yttria partially stabilized zirconia coatings were deposited by air plasma spraying with reconstituted nanosized powder. The microstructures and phase compositions of the powder and the as-sprayed nanostructured coatings were characterized by transmission electron microscopy（TEM）, scanning electron microscopy（SEM） and X-ray diffxaction（XRD）. The results demonstrate that the microstructure of as-sprayed nanostructured zirconia coating exhibits a unique tri-modal distribution including the initial nanostructure of the powder, equiaxed grains and columnar grains. Air plasma sprayed nanostructured zirconia coatings consist of only the nontransformable tetragonal phase, though the reconstituted nanostructured powder shows the presence of the monoclinic, the tetragonal and the cubic phases. The mean grain size of the coating is about 42 nm. |
| 关 键 词： | 等离子体喷射沉积 氧化钇 氧化锆 热障涂层 纳米结构 航天器 |
| 收稿时间： | 2006-09-13 |
| 修稿时间： | 2007-01-04 |
Nanostructured yttria stabilized zirconia coatings deposited by air plasma spraying |
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| ZHOU Hong,LI Fei,HE Bo,WANG Jun,SUN Bao-de. Nanostructured yttria stabilized zirconia coatings deposited by air plasma spraying[J]. Transactions of Nonferrous Metals Society of China, 2007, 17(2): 389-393. DOI: 10.1016/S1003-6326(07)60104-6 | |
| Authors: | ZHOU Hong LI Fei HE Bo WANG Jun SUN Bao-de |
| Affiliation: | State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200030, China |
| Abstract: | Nanostructured yttria partially stabilized zirconia coatings were deposited by air plasma spraying with reconstituted nanosized powder. The microstructures and phase compositions of the powder and the as-sprayed nanostructured coatings were characterized by transmission electron microscopy(TEM), scanning electron microscopy(SEM) and X-ray diffraction(XRD). The results demonstrate that the microstructure of as-sprayed nanostructured zirconia coating exhibits a unique tri-modal distribution including the initial nanostructure of the powder, equiaxed grains and columnar grains. Air plasma sprayed nanostructured zirconia coatings consist of only the nontransformable tetragonal phase, though the reconstituted nanostructured powder shows the presence of the monoclinic, the tetragonal and the cubic phases. The mean grain size of the coating is about 42 nm. |
| Keywords: | yttria zirconia plasma spraying thermal barrier coatings nanostructure |
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