Preliminary Research on Pb-Sn-Al Laminated Composite Electrode Materials Applied to Zinc Electrodeposition

Abstract

Pb-Sn-Al (PSA) laminated composite electrode materials were prepared by means of vacuum hot pressing (VHP), through introducing a medium Sn for solving the immiscibility of Pb and Al. Compared to traditional Pb-(1.0%)Ag alloy electrode, zinc eletrodeposition experiments showed that the cell voltage was reduced by at least 120 mv, the polarization potential of electrode was decreased by 13.2%, the current efficiency was higher 1.3% and the surface morphology of cathode zinc was better and smoother as well as zinc crystals smaller and more dense, while the experiment of the resistance test also showed that the resistance was reduced by at least 50%, therefore, Pb-Sn-Al (PSA) laminated composite electrode materials have lower cell voltage, as well as excellent conductivity, which would have good prospect in development and application in zinc hydrometallurgical industry in the future.

Estimation of a Thermal Conductivity in a Stationary Heat Transfer Problem with a Solid-Solid Interface

“…On the other hand, heat transfer problems in multilayer or solid-solid interface materials have been studied in recent years due to the multiple and different applications in science and engineering. These problems have direct applications in several industries, including metallurgic, technologic, electronic, the automotive, aerospace and aviation [11], [12], [13], [14], [15], [16]. The advancement of technology requires materials with particular thermal, electrical, magnetic, acoustic and optical properties due to which the interface properties of different material combinations have been studied, for instance, Cu-Al [17], [18], Si-Ge [19], Al-Si [20], Pb-Sn [21], [22], Sn-Pb [23], Ti-Al [24].…”

Estimation Technique for a Contact Point Between two Materials in a Stationary Heat Transfer Problem

“…Heat transfer problems in multilayer or solid-solid interface materials have been studied in recent years due to the multiple and different applications that have been found in science and engineering [1]. These problems have direct applications in different industries, among the most important, the metallurgical [2], the technological and electronic [3], the automotive [4], aerospace [5] and aviation [6].…”

“…Other materials are considered [6,8,[10][11][12][13][14][15]. These works focus on tension [7], the adhesion [16], thermal resistance [8,17], the corrosion [6], electrical conductivity [2] and thermal conductivity [12]. Many properties have been studied at the interface of different materials but there are no techniques in the literature that allows to determine the contact point of perfectly joined materials when it is unknown.…”

“…These problems have direct applications in different industries, among the most important, the metallurgical [2], the technological and electronic [3], the automotive [4], aerospace [5] and aviation [6].…”

“…The advancement of technology requires materials with particular thermal, electrical, magnetic, acoustic and optical properties due to which the interface properties of different combinations of materials have been studied. Among the most studied are the following pairs Al-Cu [7], Cu-Cu [7,8], Cu-Al [9], Pb-Al [2]. Other materials are considered ( [6], [8], [10][11][12][13][14][15]).…”