Johnston-Peck Aaron C, Maier Russell A
Material Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899 United States.
J Am Ceram Soc. 2024 Apr;107(4). doi: 10.1111/jace.19595.
Oxidation of perovskite CeAlO results in the eutectoid transformation to CeO and AlO. This phase transformation was recorded using thermal gravimetric analysis, X-ray diffraction, and scanning transmission electron microscopy. Lamellar features in the resultant microstructure indicates cooperative growth. Processing conditions dictate the lamellae sizes, which can be as small as a few nanometers, and coarsen into large domains with additional high temperature annealing.
钙钛矿CeAlO的氧化会导致向CeO和AlO的共析转变。使用热重分析、X射线衍射和扫描透射电子显微镜记录了这一相变过程。所得微观结构中的层状特征表明了协同生长。加工条件决定了片层尺寸，其可小至几纳米，并在额外的高温退火后粗化形成大的区域。
