VARIABLES DE OPERACIÓN Y CAMBIO DE ESCALA EN LA PRODUCCIÓN DE RECUBRIMIENTOS DE Zn-Ni CON PARTÍCULAS Y ADITIVOS

• Main Authors: Zulema A. Mahmud, Norma Míngolo, Gabriel Gordillo
• Format: Article
• Language: Spanish
• Published: Executive Business School 2021-06-01
• Series: Avances en Ciencias e Ingeniería
• Subjects: electrodeposition; protection; crystallographic microstructures-textures; electrochemical impedance
• Online Access: https://www.executivebs.org/publishing.cl/avances-en-ciencias-e-ingenieria-vol-12-nro-2-ano-2021-articulo-4/

The objective of the work was to study the operation variables and scale change of the Zn-Ni coating production process and to analyze the quality of the material. The variables studied in the electrodeposition have been: current density, time, temperature, concentrations of ceramic micro-particles, influence of the organic additives used. The Ni content in the alloy gives an idea of the nobility of the material. The optimal thickness was found by X-ray diffraction. The maximum intensity of crystallographic textures was found at the optimum thickness; phases present and compressive forces in the material (desirable). In industrial plant, the E potential during electrodeposition is more positive or noble with CSi particles, the material has high quality, Ni 16 to 18 % measured by XRF; at the same time the Micro-hardness is 350 Hv. Electrochemical techniques were used, and analyzed microstructures by SEM, in samples made in the laboratory and industry.