Abstract

The mechanism of fracture of the plasma thermal barrier coatings made of mixtures of zirconia and yttria (5.5 and 7%) powders in the form of solid and hollow spherical particles is studied by sclerometry. The fracture of the coatings is found to occur in the upper layers according to a cohesive mechanism. The coating formed from a powder mixture of the composition ZrO₂ + 7% Y₂O₃ consisting of solid spherical particles has the optimum set of properties.

中文翻译：

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各种形态的氧化锆基粉末混合物制成的等离子热障涂层的断裂机理

摘要

通过硬度法研究了由固态和空心球形颗粒形式的氧化锆和氧化钇（5.5和7％）粉末的混合物制成的等离子热障涂层的断裂机理。根据内聚机理，发现涂层的断裂发生在上层中。由固体球形颗粒组成的ZrO ₂ + 7％Y ₂ O ₃组成的粉末混合物形成的涂层具有最佳性能。