Aerosol deposition (AD) is a novel deposition process for the fabrication of dense and rather thick oxide films at room temperature. The bonding of the deposited ceramic particles is based on a shock-loading consolidation, resulting from the impact of the ceramic particles on the substrate. However, the deposition mechanism is not fully understood. In addition, many technical challenges have been observed for achieving a successful deposition of the oxides with higher efficiency. In this work, the influence of different processing parameters on the properties of the deposited layer is studied. Proof of concept was done using 8 mol.% yttria-stabilized zirconia (8YSZ) powder as starting material. The window of deposition with respect to carrier gas flows for successful deposition was identified. The influence of this carrier gas flow, the substrate materials and the carrier gas species on the coating thickness, interface quality and coating microstructure was systematically investigated. The derived mechanical characteristics revealed an unexpected behavior related to a gradient microstructure. This study supports understanding of the mechanism of room-temperature impact consolidation and its effect on the mechanical properties of the deposited layer.

中文翻译：

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工艺参数对氧化钇稳定氧化锆颗粒气溶胶沉积 (AD) 的影响

气溶胶沉积 (AD) 是一种新型沉积工艺，用于在室温下制造致密且相当厚的氧化膜。沉积的陶瓷颗粒的结合基于冲击载荷固结，这是由陶瓷颗粒对基材的冲击造成的。然而，沉积机制尚未完全了解。此外，为了以更高的效率成功沉积氧化物，已经观察到许多技术挑战。在这项工作中，研究了不同工艺参数对沉积层性能的影响。使用 8 mol.% 氧化钇稳定的氧化锆 (8YSZ) 粉末作为起始材料进行概念验证。确定了成功沉积相对于载气流量的沉积窗口。这种载气流量的影响，系统研究了基体材料和载气种类对涂层厚度、界面质量和涂层微观结构的影响。衍生的机械特性揭示了与梯度微结构相关的意外行为。该研究支持了解室温冲击固结机制及其对沉积层机械性能的影响。