Paper Title:

Effect of Rare Earth on the Inclusions and Pitting Resistance of Duplex Stainless Steel

Periodical Advanced Materials Research (Volume 528)
Main Theme Frontier of Nanoscience and Technology II
Edited by Jimmy (C.M.) Kao, Meng Hou and Ran Chen
Pages 130-134
DOI 10.4028/www.scientific.net/AMR.528.130
Citation Xiao Liu et al., 2012, Advanced Materials Research, 528, 130
Online since June, 2012
Authors Xiao Liu, Long Mei Wang
Keywords Anodic Polarization Curve, Duplex Stainless Steel, Inclusion, Rare Earth (RE)
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Abstract

The anodic polarization curves of 2205 duplex stainless steel with various RE contents in 3.5% NaCl neutral solutions have been measured by electrochemical methods, The effect of rare earth on pitting corrosion resistance of 2205 duplex stainless steel has been studied by the metallographic examination. The results show that RE can effectively depress pitting corrosion, while the irregular inclusions of Al2O3, sulfide in the shape of clump are transformed into tiny dispersive round or oval RE inclusions, and it plays a good role in pitting resistance.