摘要
The reduction of CuO with different amount of carbon(CuO:C=2:1,2:1.5,and 2:2,in molar ratio)induced by ball milling is examined by x-ray diffraction and transmission electron microscopy.It is found that reduction process is closely related to the carbon content.CuO can be completely converted into Cu if an excessive C is used(i.e.,C=1.5 or 2.0mol).However,the reduction of CuO follows a two-step process,CuO→Cu→Cu2O,if the mixture only contains a nominal C content(i.e.,C=1 mol).A tentative model in terms of solid state reaction at the interfaces is proposed to explain the effect of carbon content on the mechanoreduction of CuO.
作者
LIU Lin
YUAN Song-liu
DONG Yuan-da
CUI Kun
柳林;袁松柳;董远达;崔崑(The State Key Laboratory of Plastic Forming Stimulation and Die&Mould Technology,Huazhong University of Science&Technology,Wuhan 430074;Department of Physics,Huazhong University of Science&Technology,Wuhan 430074;Institute of Materials,Shanghai University,Shanghai 200072)
