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Partial Evaporation of Strontium Zirconate During Atmospheric Plasma Spraying |
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| Authors: | Yanfei Zhang Daniel Emil Mack Maria Ophelia Jarligo Xueqiang Cao Robert Vaßen Detlev Stöver |
| Affiliation: | 1. Forschungszentrum Jülich GmbH, IEF-1, 52425, Jülich, Germany 2. State Key Laboratory of Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, Jilin, China 3. Graduate School of Chinese Academy of Sciences, Beijing, 100049, China |
| Abstract: | Perovskite-type SrZrO3 has been investigated as a candidate material for thermal barrier coating application. During plasma spraying of SrZrO3, SrO volatilized more than ZrO2 and the coating composition deviates from initial stoichiometry. In this investigation, partial evaporation was investigated by spraying SrZrO3 powders into water. The influences of spraying current, distance and particle size of the powder on the partial evaporation were also investigated in a quantitative way. With optimized spraying parameters, stoichiometric SrZrO3 coating was produced by adding an excess amount of Sr in the precursors before plasma spraying to compensate for the volatilized component. |
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