Probing the oxidation kinetics of small permalloy particles

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• 作者：Xiaolei Dong ; Xiao Song ; Shiliu Yin ; Mandar M. Shirolkar ; Ming Li ; Haiqian Wang ; ^{hqwang@ustc.edu.cn}
• 关键词：Permalloy ; Oxidation ; Diffusion ; Microstructure ; Thermalgravimetric analysis
• 刊名：Journal of Solid State Chemistry
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：246
• 期：Complete
• 页码：309-318
• 全文大小：1924 K
• 卷排序：246

文摘

The oxidation kinetics of small NiFe particles were studied by using thermoanalysis. Grain boundary, lattice, and phase conversion induced diffusions were recognized. The activation energy of oxidation increases with the Fe content in the alloy. Each diffusion process corresponds to a characteristic temperature in TPO analysis. NiFe alloys with ~5–10 wt% Fe content have the lowest oxidation rates.