Microstructure and magnetic behavior of Cu-Co-Si ternary alloy synthesized by mechanical alloying and isothermal annealing

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• 作者：Sumit Chabri^a ; ^{sumitchabri2006@gmail.com} ; S. Bera^b ; B.N. Mondal^c ; A. Basumallick^a ; P.P. Chattopadhyay^a
• 关键词：Cu&ndash ; Co&ndash ; Si alloy ; Mechanical alloying ; X-ray diffraction ; Isothermal annealing ; Magnetic properties
• 刊名：Journal of Magnetism and Magnetic Materials
• 出版年：2017
• 出版时间：15 March 2017
• 年：2017
• 卷：426
• 期：Complete
• 页码：454-458
• 全文大小：897 K
• 卷排序：426

文摘

Microstructure and magnetic behavior of nanocrystalline 50Cu–40Co–10Si (at%) alloy prepared by mechanical alloying and subsequent isothermal annealing in the temperature range of 450–650 °C have been studied. Phase evolution during mechanical alloying and isothermal annealing is characterized by X-ray diffraction (XRD), differential thermal analyzer (DTA), high resolution transmission electron microscopy (HRTEM) and magnetic measurement. Addition of Si has been found to facilitate the metastable alloying of Co in Cu resulting into the formation of single phase solid solution having average grain size of 9 nm after ball milling for 50 h duration. Annealing of the ball milled alloy improves the magnetic properties significantly and best combination of magnetic properties has been obtained after annealing at 550 °C for 1 h duration.