Effect of hydrogen on the passivation for ultra-thin 316 L SS foil

Xiaoqi Yue, Zhile Yang, Alfred Larsson, Huajie Tang, Stephan Appelfeller, Birhan Sefer, Alexei Preobrajenski, Jun Li, Lei Zhang, Jinshan Pan

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review

Sammanfattning

The reformation and characterisation of the passive film formed on ultra-thin 316 L after hydrogen charging is investigated by combining EBSD, TMDS, XRD, Synchrotron-based XPS, and electrochemical experiments. The results show that ultra-thin foil reforms a passive film after 12 h of hydrogen release in NaCl solution. The reformed passive film is half the thickness of the as-received passive film and is dominated by Cr oxides/hydroxides. The lattice extension caused by residual hydrogen accelerates Cr migration to form Cr2O3; while the diffusible hydrogen occupies the cation vacancies and results in high defect density for the reformed passive film within 12 h.

Originalspråkengelska
Artikelnummer79
Tidskriftnpj Materials Degradation
Volym7
Nummer1
DOI
StatusPublished - 2023 dec.

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  • Oorganisk kemi

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