Enhanced Saturation Magnetization of Nanocrystalline Cobalt produced by Surface Mechanical Attrition Treatment

摘要：

A nanocrystalline surface layer is produced in Co plate by surface mechanical attrition treatment (SMAT). The characterization of microstructure and composition indicates that elements of Fe, Cr diffuse from hardened steel balls into the surface layer during SMAT. The diffusion phenomenon results in the composition deviation in the surface layer, leading to higher value of saturation magnetization (Ms) for nanocrystalline Co surface layer in comparison with its coarse-grained counterpart.

关键词： Nanocrystalline materials Cobalt Saturation magnetization Diffusion: Surface modification

作者: Wei Li Ping Liu Fengcang Ma Xinkuan Liu Xiaohong Chen Yonghua Rong

作者单位: School of Materials Science and Engineering, University of Shanghai for Science and Technology,Shang School of Materials Science and Engineering, University of Shanghai for Science and Technology,Shang School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China

会议类型: 国际会议

会议名称: 11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)

会议地点: 青岛

会议语种:英文

页码: 733-739

在线出版日期: 2010-09-25（万方平台首次上网日期，不代表论文的发表时间）