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Adhesion of YSZ nano-structured coating on Haynes 230 substrate

机译:YSZ纳米结构涂层在Haynes 230基材上的附着力

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The gas-cooled fast reactor is a 4th generation nuclear reactor currently under development. Its design concept requires protective coatings able to operate at 850℃ and protect the underlying structure in case of extreme cases, where the functional temperature can increase up to 1250℃ and there is depressurization from 70 bars to atmospheric pressure. The parts to be covered are made in 1-mm thick materials resistant to heat and erosion with high mechanical properties at high temperatures, such as the Haynes 230 nickel-based alloy. In this study, the potential of the suspension plasma spraying technique for forming the first layers of a ceramic coating on smooth 1-mm thick Haynes substrate was explored. In order to meet these specifications, the coating material selected was partially stabilized zirconia of standard composition (8 mol.% Y_2O_3-ZrO_2).
机译:气冷快堆是目前正在开发的第四代核反应堆。其设计理念要求防护涂层能够在850℃的温度下工作,并在极端情况下保护其基础结构,极端情况下,功能温度可升高至1250℃,并且压力会从70巴降到大气压。待覆盖的部件由1毫米厚的材料制成,该材料耐高温和高温腐蚀和侵蚀,具有很高的机械性能,例如Haynes 230镍基合金。在这项研究中,探索了悬浮等离子喷涂技术在光滑的1毫米厚的Haynes基底上形成陶瓷涂层第一层的潜力。为了满足这些规格,选择的涂层材料是部分稳定的标准组成的氧化锆(8摩尔%Y_2O_3-ZrO_2)。

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