Evolution of the Corrosion Products around MnS Embedded in AISI 304 Stainless Steel in NaCl Solution.

Autor: Li D; Ordos Research Institute of Energy, Peking University, Ordos 017010, China., Hao H; Ordos Research Institute of Energy, Peking University, Ordos 017010, China., Wang Z; Ordos Research Institute of Energy, Peking University, Ordos 017010, China.; School of Energy and Power Engineering, Northeast Electric Power University, Jilin 132012, China., Nyakilla EE; Ordos Research Institute of Energy, Peking University, Ordos 017010, China.
Jazyk: angličtina
Zdroj: Materials (Basel, Switzerland) [Materials (Basel)] 2024 Aug 15; Vol. 17 (16). Date of Electronic Publication: 2024 Aug 15.
DOI: 10.3390/ma17164050
Abstrakt: The characterization and evolution of corrosion products deposited on/around MnSs, a typical kind of inclusive particle embedded in AISI 304 stainless steel, was analyzed using a quasi-in-situ method in a 3.5 wt.% NaCl solution. On/around the MnS inclusion, a corrosion product layer with spinel Fe 3-x Cr x O 4 as the main component was formed, with a thickness of several hundred nanometers. Below the layer, there was a cavity layer in which part of the MnS remained, forming secondary pitting along the MnS/matrix boundary. The mechanism of corrosion product deposition and evolution accompanied by MnS dissolution, as well as the characteristics of the corrosion products, are discussed.
Databáze: MEDLINE
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