Affiliation:
1. Ordos Research Institute of Energy, Peking University, Ordos 017010, China
2. School of Energy and Power Engineering, Northeast Electric Power University, Jilin 132012, China
Abstract
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 Fe3−xCrxO4 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.
Funder
China Nuclear Power Engineering Co., Ltd.
National Foreign Experts Program