Reducing hydrogen permeation in 304 stainless steel by compound layers of Al, Zr and Ti oxides films

8th International Congress of Engineering Physics

物理学;工业技术

Hernández, R.T.L.^1 ; Cortes, V.S.^1 ; Granados, J.S.^1 ; Orozco, S.S.^2

División de Ciencias Básicas e Ingeniería, UAM-Azcapotzalco, Av. San Pablo 180, Azcapotzalco, Cd. de México

02200, Mexico^1

Departamento de Física, Facultad de Ciencias, UNAM, Av. Universidad 3000, Coyoacán, Cd. México

04510, Mexico^2

关键词: 304 stainless steel;    Aluminium oxide;    Electrolytic solution;    Hydrogen permeation;    Low concentrations;    SEM micrographs;    Thin films;    coatings;    Ultrasonic spray pyrolysis technique;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/792/1/012063/pdf
DOI  :  10.1088/1742-6596/792/1/012063

学科分类：工业工程学

来源: IOP

【 摘 要 】

A single and double layer formed by thin films coatings of aluminium oxide, zirconium oxide and titanium oxide were deposited over 304 stainless steel surface by ultrasonic spray pyrolysis technique. The steel samples were conformed for tensile tests. The purpose of these layers is to reduce hydrogen embrittlement effect in steel. An electrochemical cell was used in hydrogen charged, where a low concentration of sulfuric acid is utilized like electrolytic solution. Tension trials show the change the fracture type in samples with or without coating after hydrogen charged. The embrittlement percent factor and SEM micrographs indicate a reduction of hydrogen permeation for coated samples with double layer.