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; Abstract: Hydrogen diffusion in Zr35Ni55V10 amorphous alloy was measured by chronopotentiometry. The results show that at lower molar ratio of hydrogen (x<0.06, x=n(H)/n(M)), the diffusivity... materials; hydrogen diffusion; melt spinning; chronopotentiometry  ......
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transform; copper; additives; chronopotentiometry 1 Introduction Various organic and inorganic additives are used during copper electrorefining in order to prevent formation of defects such as nodules... Results and discussion 3.1 Chronopotentiometry study The Cu-Pb is introduced in an industrial simulated electrolyte containing additives and is exposed to a constant current density of 215 mA/cm2......
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and chronopotentiometry were used to investigate the reduction mechanism of the electrochemical deposition of Sc3+ to Sc on Ag electrode in LiF-NaF system at 1043 K. Experimental results indicate that the electroreduction of Sc3+ to Sc is a reversible process with simple 3-electron transfer in one step controlled by diffusion. Key words:scandium; reduction mechanism; cyclic voltammetry; chronopotentiometry; rare......
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April 2011; accepted 23 June 2011 Abstract: Cyclic voltammetry and chronopotentiometry were used to study the reaction mechanism of Pb(II) and the co-deposition of Pb, Mg and Li on molybdenum electrodes... and chronopotentiometry indicated that the underpotential deposition of lithium on pre-deposited Pb leads to the formation of a liquid Li-Pb alloy, and the Mg-Li-Pb alloys are formed after the addition of MgCl2. X-ray......
热封机的改进 王丽琴1,沈琳2 (1.常州机械学校,常州,213000;2.常州技术师范学院,常州,213000) 摘要: 1 前言热封机中老式的电子管式频机因调频麻烦,性能不稳定,不适应大生产需要,必须对其进行改进.我们决定采用上加热,电热丝采用500W的熨斗芯,压板表面镀铬,调温采用可控硅无级调压器,使功率在0~500W内自由调节,为了提高效率,还设有延时继电器作封装结束报警. [全文内容正在添加中] ......
托辊的改进孙忍安下垄钨矿摘 要:<正> 一,概述矿山用托辊大致可分为两类:一类用于胶带运输机支承胶带,另一类用于斜坡提升道,以支承钢丝绳,这类又叫地辊.过去对这两类托辊的辊子均用灰铸铁,结构如图1和图2所示.关键词:......