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Influence of rheological characteristics of YSZ suspension on the morphology of YSZ films deposited by electrostatic spray deposition

机译:YSZ悬浮液的流变特性对静电喷涂YSZ薄膜形貌的影响

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摘要

The effect of polyvinyl butyral (PVB) on the dispersion in nonaqueous yttria stabilized zirconia (YSZ) suspension and the influence of rheological property of the YSZ suspension on morphology of deposited films by electrostatic spray deposition (ESD) were investigated. The results showed that a gradual increase of PVB (5 wt.%, 10 wt.%, 15 wt.%) enabled the suspension to be more viscose. Also, adding PVB helped to better get dispersed and decrease the size of agglomerated particles (580 nm with 5 wt.% PVB, 830 nm with 10 wt.%, and 910 nm wt.% with 15 wt.%, respectively) compared to when YSZ suspension does not contain PVB. The dense 5 μm thick YSZ film was obtained at 15 wt.% PVB suspension, and this optimal condition resulted from the optimized viscosity and the steric stabilization of suspension.
机译:研究了聚乙烯醇缩丁醛(PVB)对非水氧化钇稳定的氧化锆(YSZ)悬浮液中分散体的影响以及YSZ悬浮液的流变性质对静电喷涂沉积(ESD)沉积膜形态的影响。结果表明,PVB的逐渐增加(5重量%,10重量%,15重量%)使悬浮液变得更粘。而且,与之相比,添加PVB有助于更好地分散并减小附聚颗粒的尺寸(分别为5重量%PVB的580 nm,10重量%的830 nm和15重量%的910 nm)。当YSZ悬架不包含PVB时。在15 wt。%的PVB悬浮液中获得了致密的5μm厚的YSZ膜,并且该最佳条件归因于最佳的粘度和悬浮液的空间稳定性。

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