This present work explores initially the feasibility of producing in-situ surface nanoeutectic Al₂O₃-ZrO₂(Y₂O₃) (SNAZ) ceramics via the oxyacetylene flame remelting (OAFR) process. Singular cellular nanoeutectics consist of nanoscale lamellae, which prevail in the samples formed under different irradiation times. Ultrafine nanoeutectics are achieved by prolonging the irradiation time, and their formation mechanisms associated with eutectic refinement are proposed to obtain a better understanding on the melt thermal history and microstructural inheritance. The enhanced nucleation undercooling is the essential mechanism associated with the microstructural refinement. SNAZ formed by the OAFR-based rapid solidification seem to offer an inexpensive route to realize in-situ microstructure tailoring or surface shaping.

这项工作最初探讨了生产原位表面纳米共晶Al ₂ O ₃ -ZrO ₂（Y ₂ O _3）的可行性。）（SNAZ）陶瓷通过氧乙炔火焰重熔（OAFR）工艺。奇异的细胞纳米共晶由纳米薄片组成，在不同的照射时间下形成的样品中普遍存在。通过延长辐照时间可以实现超细纳米共晶，并提出了与共晶细化相关的形成机理，以便对熔体的热历史和微观结构遗传有更好的了解。增强的形核过冷是与微结构细化相关的基本机理。通过基于OAFR的快速固化形成的SNAZ似乎为实现原位微结构剪裁或表面整形提供了一种廉价的途径。