J Mater Sci Technol ›› 1997, Vol. 13 ›› Issue (4): 312-314.
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Xiangcheng SUN;Feng YE; Xaoping SONG; Mngchuan YANG and Xiukui SUN (State Key Lab. for RSA, Institute of Metal Research, Chinese Academy of Sciellces, Shenyang 110015, China)