Consideration of Repassivation Process Based on the Measurement pH in Crevice and Metal Dissolution Rate of SUS304 Stainless Steel in Artificial Seawater

Abstract A new duplex 25Cr-3Ni-7Mn-0.66 N alloy was prepared in a vacuum arc re-melting furnace and characterized by metallographic and EPMA methods. Its corrosion behavior was investigated by potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and a Mott-Schottky (M-S) analysis in artificial seawater at room temperature and compared with those of super and normal commercial duplex stainless steel (SDSS and DSS). No significant difference in the open circuit potentials and pitting potentials was observed. Its passive film current density lies between those of SDSS and DSS. This was confirmed by EIS analysis. A pit attack was observed on the δ-phase for all duplex samples, because the PREN16 of the δ-phase was lower than that of the γ-phase. From the Mott-Schottky analysis, the passive films were found to be composed of bi-layer structures, a p-type semiconductor inner layer, and a n-type semiconductor outer layer. The degree of defect as well as the effect of nitrogen in passive film layer are discussed with respect to the point defect model.

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Tribocorrosion Behavior of SAF 2205 Duplex Stainless Steel in Artificial Seawater

Journal of Materials Engineering and Performance ◽

10.1007/s11665-018-3791-y ◽

2018 ◽

Vol 28 (1) ◽

pp. 414-422

Author(s):

Ruipeng Gao ◽

Eryong Liu ◽

Yingxin Zhang ◽

Lufa Zhu ◽

Zhixiang Zeng

Keyword(s):

Stainless Steel ◽

Duplex Stainless Steel ◽

Artificial Seawater ◽

2205 Duplex Stainless Steel ◽

Saf 2205

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Effects of the size of built-up layer on the wear of cemented carbide tools in cutting of SUS304 stainless steel

Journal of Advanced Mechanical Design Systems and Manufacturing ◽

10.1299/jamdsm.2021jamdsm0050 ◽

2021 ◽

Vol 15 (4) ◽

pp. JAMDSM0050-JAMDSM0050

Author(s):

Xiaoqi SONG ◽

Yukio TAKAHASHI ◽

Weiming HE ◽

Tohru IHARA

Keyword(s):

Stainless Steel ◽

Cemented Carbide ◽

Sus304 Stainless Steel ◽

Cemented Carbide Tools

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The Role of Micro Pit in the Initiaion Process of Crevice Corrosion of SUS304 Stainless Steel in Aqueous Chloride Solution

Zairyo-to-Kankyo ◽

10.3323/jcorr.70.32 ◽

2021 ◽

Vol 70 (2) ◽

pp. 32-39

Author(s):

Akira Nagaoka ◽

Kiyomi Nose ◽

Kana Nokami ◽

Haruhiko Kajimura

Keyword(s):

Stainless Steel ◽

Crevice Corrosion ◽

Chloride Solution ◽

Sus304 Stainless Steel ◽

Aqueous Chloride Solution ◽

Aqueous Chloride

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The Effect of Immersion Time on the Electrochemical Characterization of Additively Manufactured 316L Stainless Steel Exposed to Artificial Seawater

Contributed Papers from MS&T17 ◽

10.7449/2018/mst_2018_721_728 ◽

2018 ◽

Author(s):

B. Shaw ◽

T. Palmer ◽

M. Kadhi ◽

E. Sikora ◽

D. Wang

Keyword(s):

Stainless Steel ◽

Immersion Time ◽

316L Stainless Steel ◽

Electrochemical Characterization ◽

Artificial Seawater

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Discussion on Roundness of Non-Ferromagnetic Tube by Interior Magnetic Abrasive Finishing Using a Magnetic Machining Jig

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1018.105 ◽

2021 ◽

Vol 1018 ◽

pp. 105-110

Author(s):

Jiang Nan Liu ◽

Yan Hua Zou

Keyword(s):

Stainless Steel ◽

Dynamic Equation ◽

Steel Tube ◽

Experimental Results ◽

Stainless Steel Tube ◽

Helical Motion ◽

Magnetic Pole ◽

Magnetic Abrasive Finishing ◽

Sus304 Stainless Steel ◽

Abrasive Finishing

In this study, mainly researching the improvement of roundness of thick SUS304 stainless steel tube by interior magnetic abrasive finishing using a magnetic machining jig. The influence of reciprocating velocity of magnetic pole unit on the improvement of roundness of interior surface was studied by establishing the dynamic equation of magnetic machining jig. Experimental results showed that low reciprocating velocity of magnetic pole unit is conducive to the improvement of interior roundness of the thick SUS304 stainless steel tube. The reason is that the low reciprocating velocity of magnetic pole unit reduces the pitch of the helical motion and can produce greater finishing force of the magnetic machining jig.

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