机械合金化制备的Fe-Co-Nb-B纳米晶材料磁性  

The Magnetic Properties of Fe-Co-Nb-B Nanocrystal Alloys Made by Mechanical Alloying

作　　者：毛兴宇[1] 戴乐阳[2] 柯志坚[1] 王秀琳[1] 石允中[1] 

机构地区：[1]集美大学理学院 [2]集美大学轮机工程学院,福建厦门361021

出　　处：《华侨大学学报（自然科学版）》2007年第1期51-54,共4页Journal of Huaqiao University(Natural Science)

基　　金：福建省自然科学基金资助项目(2006J0451);集美大学科研基金资助项目(C60514)

摘　　要：采用机械合金化方法,在摆振式高能球球磨机上制备Fe-Co-Nb-B纳米晶合金粉末,计算球磨后应力带来的晶格畸变对X射线衍射峰宽化的影响.样品有较高的比饱和磁化强度和矫顽力,在1 073 K烧结后,虽然消除了内应力的影响,但也使晶粒尺寸有所长大.The Fe-Co-Nb-B nanocrystalline powders were mechanically alloyed with a vibrational high energy ball mill. The effect of lattice distortion on the broadening of X-ray diffraction peaks was calculated. Samples exhibit satisfactory saturation magnetization and high coercivity. The annealing process at 1 073 K can ease the local stress but also results in the coarsening of the crystal grains.

关 键 词：纳米晶 机械合金化 球磨 软磁材料 

分 类 号：TB383[一般工业技术—材料科学与工程] O751[理学—晶体学]