Dense Cr₂AlC materials were tested under a gradient loading for the first time using a burner rig. The severe thermal cycling conditions consist of 500 short cycles at 1200°C, with an accumulative time at the maximal temperature of more than 29 hours. The samples showed no visible damage under these conditions due to the formation of an outer protective α‐Al₂O₃ layer, which shows a strong adhesion with the Cr₂AlC substrate. No cracks, delamination or damage were observed at the interface between the different layers. This excellent response under cyclic loading shows the excellent potential of Cr₂AlC compounds for high‐temperature applications.

中文翻译：

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使用燃烧器装置在热梯度负载下Cr2AlC MAX相的耐环境性

首次使用燃烧器在梯度负载下测试了密集的Cr ₂ AlC材料。严酷的热循环条件包括在1200°C下进行500次短循环，在最高温度下的累积时间超过29小时。该样品显示出在这些条件下没有明显的损坏由于外部保护的α-Al的形成₂ Ó ₃层，其示出了具有一铬附着力强₂ ALC衬底。在不同层之间的界面上未观察到裂纹，分层或损坏。循环载荷下的出色响应表明Cr ₂ AlC化合物在高温应用中具有出色的潜力。