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�������պ����ѧѧ�� 2011, Vol. 37 Issue (11) :1425-1428    DOI:
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Effect of mix milling on the microstructure and surface modification of YAl2 particles
Zhang Xin, Wu Guoqing, Ling Zhaohua, Huang Zheng*
School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� A homogeneous distribution of ultrafine YAl2 particles in YAl2/Mg mixture was obtained by mix-milling method. The effect of milling on the microstructure of YAl2 particles and the dispersion of YAl2 particles in the mixture were investigated by scanning electron microscopy (SEM), energy dispersive X-ray (EDAX) and transmission electron microscope (TEM) techniques. The results show that with increasing milling time, YAl2 particle size decreases, and the amount of particle sharp corners is significantly reduced. After 20 h of milling, YAl2 particles have a nearly spherical shape with an average size of approximately 1.5 μm. YAl2 particles are coated by elemental magnesium, and distribute uniformly in YAl2/Mg mixture through ball milling.
Keywords�� ball milling   modification   interfaces     
Received 2010-06-22;
Fund:

������Ȼ��ѧ����������Ŀ(50901005);�����пƼ����Ǽƻ�������Ŀ(2007B016)

About author: �� ��(1985-),��,�ӱ���ɽ��,˶ʿ��,guoqingwu@buaa.edu.cn.
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����, �����, ���Ի�, ����.�����ĥ��YAl2������ò��������Ե�Ӱ��[J]  �������պ����ѧѧ��, 2011,V37(11): 1425-1428
Zhang Xin, Wu Guoqing, Ling Zhaohua, Huang Zheng.Effect of mix milling on the microstructure and surface modification of YAl2 particles[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2011,V37(11): 1425-1428
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