Institute of Metallurgy and Materials Science, Polish Academy of Sciences, Cracow, Poland.
J Microsc. 2010 Mar;237(3):253-7. doi: 10.1111/j.1365-2818.2009.03237.x.
Complementary structural characterization of the reaction product region formed due to high-temperature interaction (1273 K) between molten aluminum and dense polycrystalline yttria substrate was performed. The reaction product region extending up to 1 mm into the oxide substrate was characterized by a wavy shape morphology and multilayer structure consisted of three-layered zones. The application of transmission electron microscopy coupled with focused ion beam preparation technique allowed the detailed structural examination of reactively formed compounds and interfaces between different zones and phases. Fine crystalline precipitates of Al(5)Y(3)O(12) (YAG) phase surrounded by the Al(3)Y were detected within the first zone. The second layer consisted of much bigger AlYO(3) (YAP) crystals and the third one, which was the widest zone, revealed a typical C4 microstructure where elongated YAP precipitates accompanied the Al(2)Y metallic channels.
对熔融铝与致密多晶氧化钇基体在高温（1273 K）相互作用下形成的反应产物区域进行了补充结构表征。反应产物区域扩展到氧化物基体内部 1 毫米，具有波浪形形态和由三层区域组成的多层结构。应用透射电子显微镜结合聚焦离子束制备技术，能够对反应形成的化合物以及不同区域和相之间的界面进行详细的结构检查。在第一区域内检测到被 Al(3)Y 包围的细小 Al(5)Y(3)O(12)（YAG）相的精细晶状沉淀物。第二层由更大的 AlYO(3)（YAP）晶体组成，而最宽的第三层则呈现出典型的 C4 微观结构，其中伸长的 YAP 沉淀物伴随着 Al(2)Y 金属通道。
