Electrochemical studies of Fe-21Cr-1Ni duplex stainless steels with 0.15 wt% ruthenium at different temperatures
The 2101 lean duplex stainless steel has wide potential application in storage, heat exchangers, and in the oil and gas industries. This work investigates the electrochemical behaviour of 2101 duplex stainless steel with an addition of 0.15 wt% ruthenium, using potentiodynamic techniques in 1M H2SO4...
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| Veröffentlicht in: | Journal of the South African Institute of Mining and Metallurgy 2012, Vol.112 (suppl 1), p.535-538 |
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| container_title | Journal of the South African Institute of Mining and Metallurgy |
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| creator | Olaseinde, O.A. van der Merwe, J.W. Cornish, L.A. Chown, L.H. Olubambi, P.A. |
| description | The 2101 lean duplex stainless steel has wide potential application in storage, heat exchangers, and in the oil and gas industries. This work investigates the electrochemical behaviour of 2101 duplex stainless steel with an addition of 0.15 wt% ruthenium, using potentiodynamic techniques in 1M H2SO4 at 25°, 40°, 60°, and 80°C. The microstructures of samples were characterized using optical metallography and scanning electron microscopy. The results showed that the ruthenium addition moved the corrosion potential of alloy 2101 to a more positive potential. All samples containing ruthenium displayed longer passive regions at 25°C and 80°C compared to those without ruthenium. Alloys without ruthenium had higher critical current density (?'crit) values when compared to the alloys with ruthenium. Ruthenium additions decreased the passive current densities and inhibited anodic dissolution. At room temperature the corrosion rate of alloys with ruthenium was lower than these without ruthenium. |
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This work investigates the electrochemical behaviour of 2101 duplex stainless steel with an addition of 0.15 wt% ruthenium, using potentiodynamic techniques in 1M H2SO4 at 25°, 40°, 60°, and 80°C. The microstructures of samples were characterized using optical metallography and scanning electron microscopy. The results showed that the ruthenium addition moved the corrosion potential of alloy 2101 to a more positive potential. All samples containing ruthenium displayed longer passive regions at 25°C and 80°C compared to those without ruthenium. Alloys without ruthenium had higher critical current density (?'crit) values when compared to the alloys with ruthenium. Ruthenium additions decreased the passive current densities and inhibited anodic dissolution. At room temperature the corrosion rate of alloys with ruthenium was lower than these without ruthenium.</description><identifier>ISSN: 0038-223X</identifier><language>por</language><publisher>The Southern African Institute of Mining and Metallurgy</publisher><subject>ENGINEERING, GEOLOGICAL ; ENGINEERING, MULTIDISCIPLINARY ; GEOLOGY ; GEOSCIENCES, MULTIDISCIPLINARY ; MINING & MINERAL PROCESSING</subject><ispartof>Journal of the South African Institute of Mining and Metallurgy, 2012, Vol.112 (suppl 1), p.535-538</ispartof><rights>This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 International License.</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885</link.rule.ids></links><search><creatorcontrib>Olaseinde, O.A.</creatorcontrib><creatorcontrib>van der Merwe, J.W.</creatorcontrib><creatorcontrib>Cornish, L.A.</creatorcontrib><creatorcontrib>Chown, L.H.</creatorcontrib><creatorcontrib>Olubambi, P.A.</creatorcontrib><title>Electrochemical studies of Fe-21Cr-1Ni duplex stainless steels with 0.15 wt% ruthenium at different temperatures</title><title>Journal of the South African Institute of Mining and Metallurgy</title><addtitle>J. S. Afr. Inst. Min. Metall</addtitle><description>The 2101 lean duplex stainless steel has wide potential application in storage, heat exchangers, and in the oil and gas industries. This work investigates the electrochemical behaviour of 2101 duplex stainless steel with an addition of 0.15 wt% ruthenium, using potentiodynamic techniques in 1M H2SO4 at 25°, 40°, 60°, and 80°C. The microstructures of samples were characterized using optical metallography and scanning electron microscopy. The results showed that the ruthenium addition moved the corrosion potential of alloy 2101 to a more positive potential. All samples containing ruthenium displayed longer passive regions at 25°C and 80°C compared to those without ruthenium. Alloys without ruthenium had higher critical current density (?'crit) values when compared to the alloys with ruthenium. Ruthenium additions decreased the passive current densities and inhibited anodic dissolution. At room temperature the corrosion rate of alloys with ruthenium was lower than these without ruthenium.</description><subject>ENGINEERING, GEOLOGICAL</subject><subject>ENGINEERING, MULTIDISCIPLINARY</subject><subject>GEOLOGY</subject><subject>GEOSCIENCES, MULTIDISCIPLINARY</subject><subject>MINING & MINERAL PROCESSING</subject><issn>0038-223X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNqVjrsKwkAQRbdQMD7-YRrLyOxGUWtRrGy0sAtLMiErmwc7s8TPN4I_4G3uhcOFM1EJYnZIjcmeMzVnfiFuUR-zRPVnT4WErqipcYX1wBJLRwxdBRdKjT6FVN8clLH39B6pda0n5nEReYbBSQ240TsYZA0hSk2tiw1YgdJVFQVqBYSanoKVGIiXalpZz7T69UJtLufH6Zpy4ch3-auLoR1Bfv8q519lg9og6i2O2Wd_Hz70BE01</recordid><startdate>201201</startdate><enddate>201201</enddate><creator>Olaseinde, O.A.</creator><creator>van der Merwe, J.W.</creator><creator>Cornish, L.A.</creator><creator>Chown, L.H.</creator><creator>Olubambi, P.A.</creator><general>The Southern African Institute of Mining and Metallurgy</general><scope>GPN</scope></search><sort><creationdate>201201</creationdate><title>Electrochemical studies of Fe-21Cr-1Ni duplex stainless steels with 0.15 wt% ruthenium at different temperatures</title><author>Olaseinde, O.A. ; van der Merwe, J.W. ; Cornish, L.A. ; Chown, L.H. ; Olubambi, P.A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-scielo_journals_S0038_223X20120014000073</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>por</language><creationdate>2012</creationdate><topic>ENGINEERING, GEOLOGICAL</topic><topic>ENGINEERING, MULTIDISCIPLINARY</topic><topic>GEOLOGY</topic><topic>GEOSCIENCES, MULTIDISCIPLINARY</topic><topic>MINING & MINERAL PROCESSING</topic><toplevel>online_resources</toplevel><creatorcontrib>Olaseinde, O.A.</creatorcontrib><creatorcontrib>van der Merwe, J.W.</creatorcontrib><creatorcontrib>Cornish, L.A.</creatorcontrib><creatorcontrib>Chown, L.H.</creatorcontrib><creatorcontrib>Olubambi, P.A.</creatorcontrib><collection>SciELO</collection><jtitle>Journal of the South African Institute of Mining and Metallurgy</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Olaseinde, O.A.</au><au>van der Merwe, J.W.</au><au>Cornish, L.A.</au><au>Chown, L.H.</au><au>Olubambi, P.A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Electrochemical studies of Fe-21Cr-1Ni duplex stainless steels with 0.15 wt% ruthenium at different temperatures</atitle><jtitle>Journal of the South African Institute of Mining and Metallurgy</jtitle><addtitle>J. S. Afr. Inst. Min. Metall</addtitle><date>2012-01</date><risdate>2012</risdate><volume>112</volume><issue>suppl 1</issue><spage>535</spage><epage>538</epage><pages>535-538</pages><issn>0038-223X</issn><abstract>The 2101 lean duplex stainless steel has wide potential application in storage, heat exchangers, and in the oil and gas industries. This work investigates the electrochemical behaviour of 2101 duplex stainless steel with an addition of 0.15 wt% ruthenium, using potentiodynamic techniques in 1M H2SO4 at 25°, 40°, 60°, and 80°C. The microstructures of samples were characterized using optical metallography and scanning electron microscopy. The results showed that the ruthenium addition moved the corrosion potential of alloy 2101 to a more positive potential. All samples containing ruthenium displayed longer passive regions at 25°C and 80°C compared to those without ruthenium. Alloys without ruthenium had higher critical current density (?'crit) values when compared to the alloys with ruthenium. Ruthenium additions decreased the passive current densities and inhibited anodic dissolution. At room temperature the corrosion rate of alloys with ruthenium was lower than these without ruthenium.</abstract><pub>The Southern African Institute of Mining and Metallurgy</pub><oa>free_for_read</oa></addata></record> |
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| subjects | ENGINEERING, GEOLOGICAL ENGINEERING, MULTIDISCIPLINARY GEOLOGY GEOSCIENCES, MULTIDISCIPLINARY MINING & MINERAL PROCESSING |
| title | Electrochemical studies of Fe-21Cr-1Ni duplex stainless steels with 0.15 wt% ruthenium at different temperatures |
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