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Grain-refining persistency of Al-based alloy produced by electrolyzing LIU Zhi-yong(刘志勇), WANG Ming-xing(王明星), LIU Zhong-xia(刘忠侠), WENG Yong-gang(翁永刚), SONG Tian-fu(宋天福), ZUO Xiu-rong(左秀容), YANG...-melted for 6 times, and A356 after re-melted for 3 times, both remained and refined grains and A356 alloy could achieve favorable mechanical properties. All these should be attributed to the electrolyzing......
by using a combined method of two steps for the electrolyzing and heat treatment without the use of the adhesive. The relationship between the synthesis condition and discharge performance... of 238 mA?h/g at the current of 0.1 C. Key words: electrolyzing; discharge performance; heat treatment temperature; KV5O13-x-C electrode ......
alloy made by electrolyzing in the industry producing.In the course of electrolyzing the efficiency of current, the alloy formation and the productivity of rare earths by studying the formation of electrolyte, the electrolyzing temperature, the standards and the current density of cathode, the anode shape etc were studied.The conclusion is that we can produce Dy-Fe alloy (the content......
(1) (2) (3) (4) (5) 2.2 槽电压对电脱氧的影响 在温度为900 ℃时阴极的循环伏安曲线如图5所示.由图5可知:在槽电压低于1.5 V时,未出现还原峰,说明阴极未发生电脱氧反应；当槽电压高于1.5 V时,开始出现还原峰,但不明显,这是导致电还原速率慢,电流低的原因.实际开始发生还原的槽电压应该高于1.5 V. 图5 阴极的循环伏安曲线图 Fig. 5 Cyclic voltampere of cathode 在温度为900 ℃,电解时间为15 h,槽电压分别为1.2,1.6,2.0和2.8 V条件下的阴极产物SEM形貌如图6所示,对应的元素分析如表3所示.由表3可知:当槽......
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voltage is 10?14 V, the gold concentration in cathode solution is 15?50 mg/L, the electrolyzing time is 1?4 h, the electrodepositing rate of gold is more than 95%. After electrolytic experiment, the anode...,要电解3~4 h才能有较好的电解沉积效果.在实际应用时,应该根据溶液中金的浓度大小,适当调整电解时间,以做到节约电能消耗. 图4 电解时间对金电解沉积率的影响 Fig.4 Influence of electrolyzing time on electrodepositing rate of gold 2.8 最佳沉积金的工艺条件 通过对电解各影响因......
with the Ca content (mass fraction) of 11.6% can be obtained by electrolyzing for 1 h at the current of 7 A and 740 ℃, and the current efficiency can reach 67.3%. Key words: Al-Ca alloy; liquid aluminium......
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