Ceramics coatings produced by atmospheric plasma spraying (APS) on steel alloys parts involve high residual stress level that can affect the coating properties and integrity. Most of the experimental studies were focused on the stress evaluation into APS-produced coatings onto static targets. However, these studies have not been extended to stresses induced on rotating samples. Indeed, the thermal background and the deposition way onto a static target is different from a rotating one, resulting in indifferent coating residual stresses. The aim of this work is to estimate and understand the real-time stress evolution from the sandblasting process to the coating formation while the substrate is fixed at a rotating support thanks to a new system developed in the laboratory. Three different sources of stresses are analyzed in this paper: stresses induced by sandblasting, substrate heating, and splat quenching followed by the cooling down of the coating/substrate composite. Resulting stresses measurements are compared with after test ones made by incremental hole drilling.

中文翻译：

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在旋转运动下对基材进行大气等离子喷涂期间氧化锆 (Y8%) 涂层的残余应力演变

通过大气等离子喷涂 (APS) 在钢合金部件上生产的陶瓷涂层具有高残余应力水平，会影响涂层性能和完整性。大多数实验研究都集中在对静态目标上 APS 生产的涂层的应力评估上。然而，这些研究还没有扩展到旋转样品引起的应力。事实上，静态靶材上的热背景和沉积方式与旋转靶材不同，导致涂层残余应力无关紧要。这项工作的目的是估计和了解从喷砂过程到涂层形成的实时应力演变，同时由于实验室开发的新系统，基材固定在旋转支架上。本文分析了三种不同的应力来源：由喷砂、基材加热和快速淬火引起的应力，然后冷却涂层/基材复合材料。所得应力测量结果与通过增量钻孔进行的测试后的测量结果进行比较。