| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1660307 | Surface and Coatings Technology | 2008 | 7 Pages |
Abstract
Gas permeation behaviour through atmospheric plasma-sprayed 8Â mol% yttria stabilized zirconia (YSZ) electrolyte coating was studied experimentally. YSZ coatings were fabricated using different powder feedstock. The temperature and velocity of in-flight particles during spraying were measured with a diagnostic system. The results showed that particle temperature and velocity were significantly influenced by the size of powders. The gas permeability of these coatings was estimated by a specific instrument with pure O2, N2 and H2. It was found that the gas permeability was reduced by decreasing the size of powder. Gas permeation behaviour through plasma-sprayed YSZ coating was studied. Transition flow was compatible to gas permeation behaviour for all three plasma-sprayed YSZ coatings. The relationship between gas permeation behaviour and coating microstructure is discussed in this article.
Related Topics
Physical Sciences and Engineering
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Authors
Chao Zhang, Wen-Ya Li, Marie-Pierre Planche, Cheng-Xin Li, Hanlin Liao, Chang-Jiu Li, Christain Coddet,