Study on gas permeation behaviour through atmospheric plasma-sprayed yttria stabilized zirconia coating
Study on gas permeation behaviour through atmospheric plasma-sprayed yttria stabilized zirconia coating
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DOI：
10.1016/j.surfcoat.2008.05.021
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发表时间：
2008-06
影响因子：
5.4
通讯作者：
C. Zhang;Wen-ya Li;M. Planche;Cheng-Xin Li;H. Liao;Chang-jiu Li;C. Coddet
中科院分区：
文献类型：
--
作者：
C. Zhang;Wen-ya Li;M. Planche;Cheng-Xin Li;H. Liao;Chang-jiu Li;C. Coddet
研究了大气等离子喷涂8mol%氧化钇稳定氧化锆（YSZ）电解质涂层的气体渗透行为。使用不同的粉末原料制备YSZ涂层。用诊断系统测量了喷雾过程中飞行粒子的温度和速度。结果表明，颗粒的粒径对颗粒的温度和速度有很大的影响。用专门的仪器测量了这些涂层的透气性。结果表明，随着粉体粒度的减小，透气性降低。研究了等离子喷涂YSZ涂层的气体渗透行为。过渡流是兼容的气体渗透行为的所有三个等离子喷涂YSZ涂层。本文讨论了气体渗透行为与涂层组织结构的关系。
Gas permeation behaviour through atmospheric plasma-sprayed 8 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, N2and 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.