A novel device for testing the mechanical behavior of metal electrodeposits during cathode stripping

Effect of organic impurities on the morphology and crystallographic texture of zinc electrodeposits

“…2i and j) with fewer areas without zinc deposition. The Zn deposits produced in the presence of Organic 3 are more porous than those produced in the presence of Organic 4 and additionally they include more areas without deposition, which was confirmed in another work (Majuste et al, 2017) through analysis of the fractured surfaces. Thus, it was found that the mass of zinc produced in the presence of the collector for impurities was smaller, as indicated through CE calculations (Fig.…”

“…Orientation changes ending up in randomization, with a trend to reorient the crystals from a "perpendicular to the plane" to an "in plane" random distribution, were determined by texture analysis. These changes affected the mechanical behavior of the material, as confirmed by means of bending tests using a customized device (Majuste et al, 2017).…”

“…Table 2 summarizes the main findings of this work. As discussed in another work (Majuste et al, 2017), porosity appears to be the key cause for the low ductility of a metal deposit. The mechanical deformation of Zn deposits produced from electrolytes contaminated with residual amounts of insoluble or poorly soluble organics (hydrocarbon and fatty acids, respectively) may lead to the fracture of the metal sheet and to the disruption of the stripping process, with serious implications in the electrowinning performance.…”

“…In the present work, the effect of residual organics on the morphology and crystallographic texture of Zn deposits produced in an electrochemical cell with design and flow regime more similar to the industrial set-up is evaluated. The mechanical behavior of the deposits obtained under the experimental conditions described here is discussed in another publication (Majuste et al, 2017).…”