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

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.

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.531.47 ◽

2012 ◽

Vol 531 ◽

pp. 47-50

Author(s):

Xiao Liu ◽

Jian She Li

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

Rare Earth ◽

Pitting Corrosion ◽

Stainless Steels ◽

Anodic Polarization ◽

Electrochemical Methods ◽

Polarization Curves ◽

Metallographic Examination ◽

Pitting Corrosion Resistance

The anodic polarization curves of 430 ferrite stainless steels with various RE contents in 3.5% NaCl neutral solutions have been measured by electrochemical methods. The effect of RE on pitting corrosion resistance of 430 ferrite stainless steels has been studied by the metallographic examination. The results show that sulfide and other irregular inclusions are modified to round or oval-shaped RE2O2S and RES after adding RE to 430 ferrite stainless steesl. RE makes sulfide, and other irregular inclusions change to dispersed round or oval-shaped RE inclusions, effectively inhibits the occurrence of pitting corrosion, thereby enhancing the corrosion resistance of 430 ferrite stainless steels.

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Effect of Ce on the Inclusions and Pitting Resistance of 2Cr13 Stainless Steel

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.602-604.376 ◽

2012 ◽

Vol 602-604 ◽

pp. 376-379 ◽

Cited By ~ 1

Author(s):

Xiao Liu ◽

Long Mei Wang

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

Pitting Corrosion ◽

Anodic Polarization ◽

Electrochemical Methods ◽

Polarization Curves ◽

Metallographic Examination ◽

Pitting Corrosion Resistance

The anodic polarization curves of 2Cr13 stainless steel with various RE contents in 3.5% NaCl neutral solutions have been measured by electrochemical methods. The effect of Ce on pitting corrosion resistance of 2Cr13 stainless steel has been studied by the metallographic examination. The results show that sulfide and other irregular inclusions are modified to round or oval-shaped Ce2O2S and CeS after adding Ce to 2Cr13 stainless steel.Ce makes sulfide, and other irregular inclusions change to dispersed round or oval-shaped Ce inclusions, effectively inhibits the occurrence of pitting corrosion, thereby enhancing the corrosion resistance of 2Cr13 stainless steel.

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.718-720.29 ◽

2013 ◽

Vol 718-720 ◽

pp. 29-32 ◽

Cited By ~ 1

Author(s):

Xiao Liu ◽

Yu Bo

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

Rare Earth ◽

Austenitic Stainless Steel ◽

Pitting Corrosion ◽

Stainless Steels ◽

Anodic Polarization ◽

Austenitic Stainless Steels ◽

Metallographic Examination ◽

Pitting Corrosion Resistance

The anodic polarization curves of 21Cr-11Ni austenitic stainless steels with various RE contents in 3.5% NaCl neutral solutions have been measured by electrochemical methods. The effect of RE on pitting corrosion resistance of 21Cr-11Ni stainless steels has been studied by the metallographic examination. The results show that sulfide and other irregular inclusions are modified to round or oval-shaped RE2O2S and RES after adding RE to 21Cr-11Ni stainless steesl. RE makes sulfide, and other irregular inclusions change to dispersed round or oval-shaped RE inclusions, effectively inhibits the occurrence of pitting corrosion, thereby enhancing the corrosion resistance of 21Cr-11Ni austenitic stainless steels.

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