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, Central South University, Changsha 410083, China) Abstract: Processing of silver separated residue(SSR) by low temperature alkaline one-step smelting was adopted to produce precious lead alloy...下水淬急冷降温,待熔体恢复到室温后,取出熔炼渣.在固定浸出温度80 ℃,浸出时间90 min,液固比7:1和搅拌速度300 r/min条件下加水浸出,得到浸出液和浸出渣,浸出渣经筛分得到贵铅,分别称量,取样分析.实验过程流程图如图3所示. 图3 分银渣低温碱性一步熔炼流程 Fig. 3 Principle flow sheet of silver separated......
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. The results indicate that the expression of process entropy and performance entropy could quantitative analyze the brazability of AgCuZnSn brazing alloys. Key words: silver brazing alloy; melting.... Effect of trace calcium on melting behavior of Ag-Cu-Zn brazing alloy by thermal analysis kinetics[J]. China Welding (English Edition), 2015, 24(4): 15-20. [4] 王 禾, 薛松柏, 刘 霜. 银元素对含银钎料性能的影响[J]. 中国有色金属学......
are uniformly dispersed in the silver matrix. Key words: Ag-Sn-Cu-Bi-Ni alloy; surface morphology; microstructure; internal oxidation silver alloy. In order to enhance the oxidation rate of Ag-Sn alloy, we add Cu and Bi to Ag-Sn alloy. Consequently, the objective of this paper is to investigate......
multicomponent alloy at 1 223 K for 45 min when the chamber pressure maintains at 10-25 Pa. Silver can be easily enriched in the residue and its mass fraction increases from 3.6% to 27.8% when...Pretreatment of lead anode slime with low silver by vacuum distillation for concentrating silverLI Liang(李亮)1,2,3, TIAN Yang(田阳)1,2, LIU Da-chun(刘大春)1,2,3, ZHOU Hou-jun(周厚军)1,2, DAI Yong-nian(戴永年......
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Preparation of silver nanoparticle via active template under ultrasonic ZHENG Min(郑 敏)1, WANG Zuo-shan(王作山)2, ZHU Ya-wei(朱亚伟)1 1. College of Material Engineering, Soochow University, Suzhou... for the production of silver nanoparticle by using nano-carbon as active template. Special ultrasonic condition was used to assure the active effect of the template and achieve an even and stable micro-reactor......
电镀层界面扩散反应的微观不均匀性,导致界面区形成某些复杂的亚稳态结构相.同时,界面区存在C,O原子,可能是银基钎料锡电镀层界面被污染所致. 图2 扩散温度对银基钎料锡电镀层界面组织的影响 Fig. 2 Effect of diffusion temperature on interface micro-structure of tin coatings and silver brazing filler metals 图3 银基钎料锡电镀层各微区的EDS分析 Fig. 3 EDS analysis of silver brazing filler metals with electroplating tin 表1 图3的EDS分析结果 Table 1 Results of EDS analysis in Fig.3 2.3......
performance of ultrafine silver powder WEI Li-li1, XU Sheng-ming1, 2, XU Gang1, CHEN Song-zhe1, LI Lin-yan1 (1. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China; 2. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China) Abstract: The preparation of ultrafine silver powder was investigated by reducing Ag(NH3)2......