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of silver rare earth oxide electrical contact materials prepared by internal oxidation WU Chun-ping1, 3, YI Dan-qing1, 3, CHEN Jing-chao2, LI Jian1, 3, WANG Bin1, 3, FANG Xi-ya1, 3 (1. School...驱动力在反应的整个过程中都保持恒定,氧能扩散至合金内部与稀土元素发生氧化反应,使氧化反应能够充分进行. 图2 内氧化法制备的Ag-Y2O3 X射线衍射谱 Fig.2 XRD pattern of silver yttrium oxide fabricated by internal oxidation 图3 内氧化法制备的Ag-CeO2的X射线衍射......
to be retarding to Au dissolution severely. This severe reduction in Au recovery could be attributed to the formation of a tight antimony oxide (Sb2O5) as well as silver sulphide layers, resulted... of Ag2S layer on the surface of gold particles in addition to the presence of antimony oxide layer [10,33]. Fig. 11 Gold dissolution with stibnite and silver minerals, Sb+Au+αβγ||Si......
Investigation of Adhesion and Fracture Toughness of Thermally Grown Oxide Scales by Interface Indentation Test P. Lours1,QI Yu-hong2,p. Bruckel1,ZHANG Zhan-ping2 (1.Research Centre on Tools... grown oxide scales for pure nickel were investigated using Vickers indentation technique. The nickel samples were oxidised at 1200℃ for 100h-600h. The crack length induced by Vickers indentation test......
草酸为还原剂的体系中,银和二氧化锡沉积完全.以亚硫酸钠为还原剂的体系中所得复合粉体为片状结构,厚度约为300 nm,而以草酸为还原剂所得复合粉体为球形结构,粒径约为100 nm.以柠檬酸为配合剂和还原剂的水热体系中二氧化锡沉积不完全,所得复合粉体为不规则球形,粒径较小,约为30 nm. 关键词:复合材料; 银氧化锡; 水热合成; 共沉积; composite material; silver tin oxide; hydrothermal synthesis; codeposition; [全文内容正在添加中] ......
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-conduction to conduction mode during intruding nanosecond transients. Key words: capacitance; metal oxide varistor; nanosecond transient; rare earth oxide; transition delay; ytterbium oxide Cite...: https://doi.org/ 10.1007/s11771-018-3917-2. 1 Introduction Metal oxide (ZnO) varistors are predominantly used to protect the electric circuit in both low and high voltage applications against surges......
板具有比较直的孔道和高的孔洞率, 金银合金纳米线由于模板的限制作用而呈现出高度的有序性. 透射电镜照片显示单根纳米线长而光滑, 选区电子衍射显示纳米线具有多晶结构, 能谱分析表明纳米线是由金和银两种元素组成. 文中对合金纳米线的形成原因和影响因素都做了简单的分析. 关键词:阳极氧化铝模板; 溶胶-凝胶法; 金银合金纳米线; nano-porous; anodic aluminum oxide (AAO) template; gold and silver composite nanowire arrays; sol-gel method; [全文内容正在添加中] ......
of the operating conditions[J]. Hydrometallurgy, 2004, 75(1/4): 157-167. [4] ZHANG Xiao-yun, TIAN Xue-da, ZHANG Dong-fang. Separation of silver from silver-manganese ore with cellulose as reductant[J... for production of manganese sulfate[J]. Russian Journal of Non-Ferrous Metals, 2012, 53(2): 211-217. [9] TANG Qing, ZHONG Hong, WANG Shuai, LI Jin-zhong, LIU Guang-yi. Reductive leaching of manganese oxide......
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Reaction mechanism between oxide film on surface of Al-Li alloy and CsF-AlF3 flux XUE Song-bai(薛松柏), ZHANG Ling(张 玲), HAN Zong-jie(韩宗杰), HUANG Xiang(黄 翔) College of Materials Science...; Abstract: The composition of the oxide film on the surface of Al-Li alloy was measured......
