Abstract��A kind of passivated magnesium powders are made by adding a sort of rare earth oxide to the passivating agent. The surface layer of the present magnesium powder was studied by using SEM��XRD and AES. This kind of powder seems to be uniform and compact , and no obvious holes or cracks were found on the coating from the SEM observation. The results of XRD and AES indicate that the surface layer mainly consists of MgO and a small quantity of MgCl. Line scanning analysis shows the line distribution of the elements along the cross��section of the coating. The estimated depth of the coating is about 7~8 ��m based on the experimental results. Its combustion-inhibiting time under 1��KG-*9��000 �� comes to 25.7 seconds which is longer than that of the common passivated magnesium powder.
�ƾ���;�����;л��Ӣ. �ۻ�����þ�ı����ɷּ��ṹ����[J]. �й������ڿ���, 2007, 25(2): 15-0.
HUANG Jun��lin;WAN Jian��feng;XIE Chao��ying. Analysis of the Structure and Components of Surface Layer on Passivated Magnesium Powder. Chinese Journal of Iron and Steel, 2007, 25(2): 15-0.
2007, Vol. 25 
