Abstract Ni sheet samples with one side normally coarse-grained and the other side nano-grained have been prepared for two-sided oxidation deflection testing. The sample is sharply deflected during heating up to 800 °C in air, because of a significant nano-grain growth. Deflection also occurs during the subsequent isothermal oxidation and cooling, due to the difference in the development of the growth and thermal stresses in the thermally-grown NiO on the nanocrystalline Ni. The latter is interpreted based on the investigation of the Ni nanocrystallization effect on the evolution of the microstructure of the NiO scale with time.

中文翻译：

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纯镍上 NiO 尺度的生长和热应力的发展：金属纳米化效应

摘要 制备了一侧为粗晶、另一侧为纳米晶的镍片样品，用于两侧氧化变形测试。由于显着的纳米晶粒生长，样品在空气中加热到 800 °C 时会急剧偏转。由于纳米晶 Ni 上热生长的 NiO 的生长和热应力的发展不同，在随后的等温氧化和冷却过程中也会发生偏转。后者是基于对 Ni 纳米晶化对 NiO 尺度微观结构随时间演变的研究来解释的。