Effects of cerium on the compositional variations in and around inclusions and the initiation and propagation of pitting corrosion in hyperduplex stainless steels

被引：112

作者：

Jeon, Soon-Hyeok ^{[1
]}

Kim, Soon-Tae ^{[1
]}

Choi, Min-Seok ^{[1
]}

Kim, Ji-Soo ^{[2
]}

Kim, Kwang-Tae ^{[2
]}

Park, Yong-Soo ^{[1
]}

机构：

[1] Yonsei Univ, Dept Mat Sci & Engn, Seoul 120749, South Korea

[2] POSCO Tech Res Labs, Stainless Steel Res Grp, Pohang 790785, Gyeongbuk, South Korea

来源：

CORROSION SCIENCE | 2013年 / 75卷

关键词：

Rare earth elements; Stainless steel; SEM; Polarization; Pitting corrosion; NONMETALLIC INCLUSIONS; SULFIDE INCLUSIONS; CREVICE CORROSION; CHLORIDE SOLUTION; RESISTANCE; PITS; NUCLEATION; GROWTH;

D O I：

10.1016/j.corsci.2013.06.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ce addition to a hyperduplex stainless steel increased its resistance to pitting corrosion because of the formation of stable Ce oxides and a decrease in the area of microcrevices between the matrix and inclusions that act as pit initiation sites. In addition, Cr-enriched zones were formed around Ce oxides with low Cr content in the Ce added alloy. Pitting corrosion in the base alloy initiated at the microcrevice and propagated to Cr oxides, which deteriorated the pitting corrosion resistance. However, pitting corrosion in the Ce added alloy propagated not to the stable Ce oxides but to the matrix. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：367 / 375

页数：9

共 44 条

[11]

Degerbeck J., 1974, MATER CORROS, V25, P172

[12]

DEGERBECK J, 1978, MATER CORROS, V29, P179

[13]

Elliott J.F., 1960, THERMOCHEMISTRY STEE, V1, P171

[14]

Fujikawa H., J IRON STEEL I JPN, V67, P169

[15] Imaging metastable pits on austenitic stainless steel in situ at the open-circuit corrosion potential [J].

González-García, Y ;

Burstein, GT ;

González, S ;

Souto, RM .

ELECTROCHEMISTRY COMMUNICATIONS, 2004, 6 (07) :637-642

[16] Effects of misch metal on the formation of non-metallic inclusions and the associated resistance to pitting corrosion in 25% Cr duplex stainless steels [J].

Ha, HeonYoung ;

Park, ChanJin ;

Kwon, HyukSang .

SCRIPTA MATERIALIA, 2006, 55 (11) :991-994

[17] Effects of copper addition on the formation of inclusions and the resistance to pitting corrosion of high performance duplex stainless steels [J].

Jeon, Soon-Hyeok ;

Kim, Soon-Tae ;

Lee, In-Sung ;

Park, Joo-Hyun ;

Kim, Kwang-Tae ;

Kim, Ji-Soo ;

Park, Yong-Soo .

CORROSION SCIENCE, 2011, 53 (04) :1408-1416

[18] Effects of sulfur addition on pitting corrosion and machinability behavior of super duplex stainless steel containing rare earth metals: Part 2 [J].

Jeon, Soon-Hyeok ;

Kim, Soon-Tae ;

Lee, In-Sung ;

Park, Yong-Soo .

CORROSION SCIENCE, 2010, 52 (10) :3537-3547

[19] Effects of rare earth metals addition on the resistance to pitting corrosion of super duplex stainless steel - Part 1 [J].

Kim, Soon-Tae ;

Jeon, Soon-Hyeok ;

Lee, In-Sung ;

Park, Yong-Soo .

CORROSION SCIENCE, 2010, 52 (06) :1897-1904

[20] THE IMPROVEMENT OF THE LOCALIZED CORROSION-RESISTANCE OF STAINLESS-STEEL BY CERIUM [J].

LU, YC ;

IVES, MB .

CORROSION SCIENCE, 1993, 34 (11) :1773-1785

← 1 2 3 4 5 →