作者单位:ZHAO Ding-guo,WANG Shu-huan,GUO Jian-long,LI Qiu-jing(Education Ministry Key Lab of Modem Metallurgy Technology, College of Metallurgy and Energy, Hebei United University, Tangshan 063009, Hebei, China)赵定国,王书桓,郭建龙,李秋京(河北联合大学冶金与能源学院,教育部现代冶金技术重点实验室,河北唐山063009)