Corrosion resistance of the AISI 304, 316 and 321 stainless steel surfaces modified by laser

8th National Scientific Conference Advances in Electrotechnology (Postepy w Elektrotechnologii)

无线电电子学

Szubzda, B.^1 ; Antoczak, A.^2 ; Koziol, P.^2 ; Lazarek, L.^2 ; Stpak, B.^2 ; Lcka, K.^2 ; Szmaja, A.^1 ; Ozimek, M.^1

Electrotechnical Institute Division of Electrotechnology and Materials Science, M. Sklodowskiej-Curie 55/61, Wroclaw

50-369, Poland^1

Institute of Telecommunications, Teleinformatics and Acoustics, Wroclaw University of Technology, Wybrzeze Wyspiaskiego 27, Wroclaw

50-370, Poland^2

关键词: 321 Stainless Steel;    Breakdown potential;    Corrosion phenomena;    Corrosion potentials;    Electrochemical test;    Nanosecond pulsed laser;    Stainless steel surface;    Structural tests;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/113/1/012017/pdf
DOI  :  10.1088/1757-899X/113/1/012017

来源: IOP

【 摘 要 】

The article presents the analysis results of the influence of laser fluence on physical and chemical structure and corrosion resistance of stainless steel surfaces modified by irradiating with nanosecond-pulsed laser. The study was carried out for AISI 304, AISI 316 and AISI 321 substrates using Yb:glass fiber laser. All measurements were made for samples irradiated in a broad range of accumulated fluence (10400 J/cm2). The electrochemical composition (by EDX) and surface morphology (by SEM) of the prepared surfaces were carried out. Finally, corrosion resistance was analyzed by a potentiodynamic electrochemical test. The obtained results showed very high corrosion resistance for samples made by fluency of values lower than 100 J/cm2. In this case, higher values of corrosion potentials and breakdown potentials were observed. A correlation between corrosion phenomena, the range of laser power (fluence) and the results of chemical and structural tests were also found.