| ZHANG Hong-song,LIU Zhen-qi,GUAN Shao-kang.Comparison of Pore Structure between Plasma-sprayed Nano-YSZ and Micron-YSZ Thermal Barrier Coatings[J],39(5):4-7 |
| Comparison of Pore Structure between Plasma-sprayed Nano-YSZ and Micron-YSZ Thermal Barrier Coatings |
| Received:January 27, 2010 Revised:October 10, 2010 |
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| DOI： |
| KeyWord:plasma spray thermal barrier coatings pore structure quantitative analysis |
| Author | Institution |
| ZHANG Hong-song |
1.School of Materials Science and Engineering, Zhengzhou University, Zhengzhou , China;2.Department of Mechanical Engineering, Henan Institute of Engineering, Zhengzhou , China |
| LIU Zhen-qi |
Factory of Locomotive Grolling Stock of Zhengzhou Railway Bureau, Zhengzhou , China |
| GUAN Shao-kang |
School of Materials Science and Engineering, Zhengzhou University, Zhengzhou , China |
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| Abstract: |
| Pore structure of plasma-sprayed nano-YSZ and micron-YSZ thermal barrier coatings prepared at the same technological parameters were analyzed by quantitative analysis technology. Results show that the porosity of nanoYSZ coating is lower than that of micron-YSZ coating. The size and shape of pores in these two coatings have resemble probability distribution. Pores whose diameter is between 1μm and 10μm micrometer have the greatest percentage in nano-YSZ coating. However, pores whose diameter is greater than 10μm have the greatest percentage in micron-YSZ coating. Percentage of pores with same axes in nano-YSZ coating is greater than that of micron-YSZ coating apparently. These results imply that size of powders have prominent effect on pore structure of plasma-sprayed thermal barrier coatings. |
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