ESTUDIO DEL INGRESO DE HIDRÓGENO EN ACERO ELECTROCINCADO MEDIANTE ANÁLISIS TÉRMICO

• Main Authors: María N. Delpupo, Mariano N. Inés, Carolina A. Asmus, Graciela A. Mansilla
• Format: Article
• Language: Spanish
• Published: Executive Business School 2020-08-01
• Series: Avances en Ciencias e Ingeniería
• Subjects: electrogalvanized; pickling; hydrogen; differential thermal analysis
• Online Access: https://www.executivebs.org/publishing.cl/avances-en-ciencias-e-ingenieria-vol-11-nro-3-ano-2020-articulo-7/

The aim of this work is to study the hydrogen input in SAE 1005 steel wire samples during the successive stages of the electrolytic galvanizing process. Differential scanning calorimetry tests were performed in order to evaluate possible hydrogen absorption/desorption temperatures and finally the silver decoration technique was used to detect hydrogen trapping sites in the microstructure of the material. From the experimental results, it was determined that hydrogen enters both the pickling and the electrogalvanizing stages, the latter being the most influential. The hydrogen is retained at the interface corresponding to the zinc coating and the steel matrix. However, the evidence found allows us to conclude that the final stage electrogalvanizing is the one with the greatest influence on the entry of H for this grade of steel.