Pub Date : 2019-10-31DOI: 10.14773/CST.2019.18.5.212
S. Gnedenkov, S. Sinebryukhov, V. Sergienko, A. Gnedenkov
{"title":"Composite PEO-Coatings as Defence Against Corrosion and Wear: A Review","authors":"S. Gnedenkov, S. Sinebryukhov, V. Sergienko, A. Gnedenkov","doi":"10.14773/CST.2019.18.5.212","DOIUrl":"https://doi.org/10.14773/CST.2019.18.5.212","url":null,"abstract":"","PeriodicalId":43201,"journal":{"name":"Corrosion Science and Technology-Korea","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2019-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43490698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-31DOI: 10.14773/CST.2019.18.5.155
Rogayeh Sadeghzadeh, L. Ejlali, Moosa Es’haghi, H. Basharnavaz, K. Seyyedi
{"title":"Experimental Investigation and Quantum Chemical Calculations of Some (Chlorophenyl Isoxazol-5-yl) Methanol Derivatives as Inhibitors for Corrosion of Mild Steel in 1 M HCl Solution","authors":"Rogayeh Sadeghzadeh, L. Ejlali, Moosa Es’haghi, H. Basharnavaz, K. Seyyedi","doi":"10.14773/CST.2019.18.5.155","DOIUrl":"https://doi.org/10.14773/CST.2019.18.5.155","url":null,"abstract":"","PeriodicalId":43201,"journal":{"name":"Corrosion Science and Technology-Korea","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2019-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41801637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-31DOI: 10.14773/CST.2019.18.4.129
S. Hur, Ki Tae Kim, Y. Kim
About 20 ~ 50% of typical carbon fiber reinforced plastic is lighter than metals, and CFRP has excellent properties, including low density, high strength and high corrosion resistance [1,2]. Because of these excellent properties of CFRP, composite materials which meet various regulation conditions needed in the industrial fields, have been widely used in the many industries including aircraft, transportation, ship building, and automobile etc. [3,4]. However, CFRP reveals water absorption in water immersion or high humidity environment, and water absorption occurs in an epoxy not carbon fiber, and can be facilitated by higher temperature. Since these properties can induce volume expansion inside CFRP and change the internal stress state and degrade the chemical bond between the fiber and the matrix, the mechanical properties including bond strength may be lowered [5,6]. When CFRP contacts to metallic materials, galvanic corrosion can be occur because of the potential difference between them [7,8]. Galvanic corrosion is known to occur when two dissimilar materials are jointed together. In general, the less noble material experiences accelerated corrosion [9]. Corrosion of metallic materials varies with the exposure time in the environments, and it depends upon the formation of protective passive film and microstructure [10] and the ratio of cathode and anode, corrosivity, and temperature etc. [11]. Our group has recently reported the galvanic corrosion between GECM (Graphite Epoxy Composite Materials) and aluminum/carbon steel [12-14]: In galvanic couple between aluminum and carbon steel bolt, their corrosion rates were higher than those of single specimen. In galvanic couple between GECM, aluminum, and carbon steel, corrosion behavior of carbon steel bolt and aluminum was changed due to different corrosion mechanism in tap water and chloride solutions. On the other hand, it is well known that a strong galvanic couple can be formed between CFRP and steel rivets if the joint is exposed to a corrosion environment. In general, CFRP is cathodic and performs Effects of NaCl Concentration and Solution Temperature on the Galvanic Corrosion Between CFRP and A516Gr.55 Carbon Steel
{"title":"Effects of NaCl Concentration and Solution Temperature on the Galvanic Corrosion Between CFRP and A516Gr.55 Carbon Steel","authors":"S. Hur, Ki Tae Kim, Y. Kim","doi":"10.14773/CST.2019.18.4.129","DOIUrl":"https://doi.org/10.14773/CST.2019.18.4.129","url":null,"abstract":"About 20 ~ 50% of typical carbon fiber reinforced plastic is lighter than metals, and CFRP has excellent properties, including low density, high strength and high corrosion resistance [1,2]. Because of these excellent properties of CFRP, composite materials which meet various regulation conditions needed in the industrial fields, have been widely used in the many industries including aircraft, transportation, ship building, and automobile etc. [3,4]. However, CFRP reveals water absorption in water immersion or high humidity environment, and water absorption occurs in an epoxy not carbon fiber, and can be facilitated by higher temperature. Since these properties can induce volume expansion inside CFRP and change the internal stress state and degrade the chemical bond between the fiber and the matrix, the mechanical properties including bond strength may be lowered [5,6]. When CFRP contacts to metallic materials, galvanic corrosion can be occur because of the potential difference between them [7,8]. Galvanic corrosion is known to occur when two dissimilar materials are jointed together. In general, the less noble material experiences accelerated corrosion [9]. Corrosion of metallic materials varies with the exposure time in the environments, and it depends upon the formation of protective passive film and microstructure [10] and the ratio of cathode and anode, corrosivity, and temperature etc. [11]. Our group has recently reported the galvanic corrosion between GECM (Graphite Epoxy Composite Materials) and aluminum/carbon steel [12-14]: In galvanic couple between aluminum and carbon steel bolt, their corrosion rates were higher than those of single specimen. In galvanic couple between GECM, aluminum, and carbon steel, corrosion behavior of carbon steel bolt and aluminum was changed due to different corrosion mechanism in tap water and chloride solutions. On the other hand, it is well known that a strong galvanic couple can be formed between CFRP and steel rivets if the joint is exposed to a corrosion environment. In general, CFRP is cathodic and performs Effects of NaCl Concentration and Solution Temperature on the Galvanic Corrosion Between CFRP and A516Gr.55 Carbon Steel","PeriodicalId":43201,"journal":{"name":"Corrosion Science and Technology-Korea","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45443308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-31DOI: 10.14773/cst.2019.18.4.148
Min-Su Kim, S. Hwang, Dongjun Kim, Dong-Bok Lee
{"title":"Variables of Electrolytic Nickel Plating for RPV Cladding Repair","authors":"Min-Su Kim, S. Hwang, Dongjun Kim, Dong-Bok Lee","doi":"10.14773/cst.2019.18.4.148","DOIUrl":"https://doi.org/10.14773/cst.2019.18.4.148","url":null,"abstract":"","PeriodicalId":43201,"journal":{"name":"Corrosion Science and Technology-Korea","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47668476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-31DOI: 10.14773/CST.2019.18.4.121
E. Angelini, S. Grassini, M. Parvis, F. Zucchi
{"title":"Corrosion Prediction of Metallic Cultural Heritage Assets by EIS","authors":"E. Angelini, S. Grassini, M. Parvis, F. Zucchi","doi":"10.14773/CST.2019.18.4.121","DOIUrl":"https://doi.org/10.14773/CST.2019.18.4.121","url":null,"abstract":"","PeriodicalId":43201,"journal":{"name":"Corrosion Science and Technology-Korea","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44485577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-31DOI: 10.14773/CST.2019.18.4.138
Kyunghee Lee, H. Han, Sung-Kyu Shin, K. Sung, Y. Rhee, 이경희, 한호석, 신성용, 성기방, 이영우
Pipes and components of the secondary system in the pressurized water reactor (PWR) are mainly comprised of manufactured carbon steel. Thus, the generated carbon steel corrosion products are transported into the steam generator and deposited, thereby deteriorating the integrity of the steam generator. Environmental condition in the secondary system of the PWRs differs across different locations. So, the corrosion rate and types of corrosion products depend on specific locations in the secondary system. In this study, the quantity and chemical compositions of corrosion products generated in various locations that vary in different temperatures and chemistry conditions were investigated. As a result of evaluating the PWR “Unit A” that is in current operation, the amount of corrosion products generated in the section of high temperature feedwater system was identified as the largest source in the secondary system. Major components of corrosion products were iron oxides such as magnetite, hematite, and lepidocrocite.
{"title":"Analysis on Formation of Corrosion Products in Secondary Steam-Water System of Nuclear Power Plant, 원자력발전소 2차측 습증기계통 주요지점별 부식 발생현황 분석","authors":"Kyunghee Lee, H. Han, Sung-Kyu Shin, K. Sung, Y. Rhee, 이경희, 한호석, 신성용, 성기방, 이영우","doi":"10.14773/CST.2019.18.4.138","DOIUrl":"https://doi.org/10.14773/CST.2019.18.4.138","url":null,"abstract":"Pipes and components of the secondary system in the pressurized water reactor (PWR) are mainly comprised of manufactured carbon steel. Thus, the generated carbon steel corrosion products are transported into the steam generator and deposited, thereby deteriorating the integrity of the steam generator. Environmental condition in the secondary system of the PWRs differs across different locations. So, the corrosion rate and types of corrosion products depend on specific locations in the secondary system. In this study, the quantity and chemical compositions of corrosion products generated in various locations that vary in different temperatures and chemistry conditions were investigated. As a result of evaluating the PWR “Unit A” that is in current operation, the amount of corrosion products generated in the section of high temperature feedwater system was identified as the largest source in the secondary system. Major components of corrosion products were iron oxides such as magnetite, hematite, and lepidocrocite.","PeriodicalId":43201,"journal":{"name":"Corrosion Science and Technology-Korea","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45821491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-30DOI: 10.14773/CST.2019.18.3.92
A. Karim, Jin-Hee Bae, D. Kam, Cheolhee Kim, Yeong-do Park
{"title":"Critical Influence of Rivet Head Height on Corrosion Performance of CFRP/Aluminum Self-Piercing Riveted Joints","authors":"A. Karim, Jin-Hee Bae, D. Kam, Cheolhee Kim, Yeong-do Park","doi":"10.14773/CST.2019.18.3.92","DOIUrl":"https://doi.org/10.14773/CST.2019.18.3.92","url":null,"abstract":"","PeriodicalId":43201,"journal":{"name":"Corrosion Science and Technology-Korea","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45959171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-30DOI: 10.14773/CST.2019.18.3.110
D. Seo, Jae-Bong Lee, 서동일, 이재봉
Resistances to pitting corrosion of additive manufactured (AM) Ti-6Al-4V alloys in 0.6 M NaBr and 0.6 M NaCl aqueous solutions were compared using micro-droplet cell techniques. With respect to the pitting corrosion resistance, this study focused on two different types of halide anions in aqueous solutions, i.e. Br - and Cl - . The differences between Br - and Cl - halide anions for breakdown on passive films of AM Ti-6Al-4V alloy were explained using Langmuir adsorption model with their equilibrium adsorption coefficients. The results of the analysis showed that the lower resistance to pitting potential of AM Ti-6Al-4V alloy in Br - aqueous solution was attributed to the higher equilibrium adsorption coefficient of Br - . In addition, micro-electrochemical test results showed that the pitting corrosion resistance of dark grains in additive manufactured Ti-6Al-4V alloy was lower as compared to that of bright grains due to the larger volume of α ' phase that caused the susceptibility to pit initiation.
{"title":"Comparing Resistances to Pitting Corrosion of Additive Manufactured Ti-6Al-4V Alloys in NaCl and NaBr Aqueous Solutions, NaCl과 NaBr수용액에서 적층가공으로 제조된 Ti-6Al-4V 합금의 공식 저항성 비교","authors":"D. Seo, Jae-Bong Lee, 서동일, 이재봉","doi":"10.14773/CST.2019.18.3.110","DOIUrl":"https://doi.org/10.14773/CST.2019.18.3.110","url":null,"abstract":"Resistances to pitting corrosion of additive manufactured (AM) Ti-6Al-4V alloys in 0.6 M NaBr and 0.6 M NaCl aqueous solutions were compared using micro-droplet cell techniques. With respect to the pitting corrosion resistance, this study focused on two different types of halide anions in aqueous solutions, i.e. Br - and Cl - . The differences between Br - and Cl - halide anions for breakdown on passive films of AM Ti-6Al-4V alloy were explained using Langmuir adsorption model with their equilibrium adsorption coefficients. The results of the analysis showed that the lower resistance to pitting potential of AM Ti-6Al-4V alloy in Br - aqueous solution was attributed to the higher equilibrium adsorption coefficient of Br - . In addition, micro-electrochemical test results showed that the pitting corrosion resistance of dark grains in additive manufactured Ti-6Al-4V alloy was lower as compared to that of bright grains due to the larger volume of α ' phase that caused the susceptibility to pit initiation.","PeriodicalId":43201,"journal":{"name":"Corrosion Science and Technology-Korea","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43157395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-30DOI: 10.14773/CST.2019.18.3.73
Min-Seung Cho, Choong-Nyeon Park, Chan‐Jin Park
Hot-dip aluminized coating has been widely used to protect steel substrate against corrosion. In this study, the corrosion behavior of hot-dip aluminized type 409L (11% Cr) stainless steel (SS) was investigated using macro- and micro-scale polarization tests. An Al-Fe-Si alloy layer that was formed due to inter-diffusion of alloying elements between Al coating and SS substrate was observed between Al coating and 409L SS substrate. In both macro- and micro-scale polarization tests, the corrosion potential ( E corr ) of the 409L SS substrate was much nobler than that of the Al coating and alloy layer. E corr of the alloy layer was between that of Al coating and 409L SS substrate. This indicates that the alloy layer can act as a buffer between the more active Al coating and the nobler SS substrate for pit growth in aluminized SS. The presence of the alloy layer appears to be helpful in hindering pitting corrosion of aluminized SS.
{"title":"Micro-scale Observation of Corrosion of Hot-Dip Aluminized 11% Cr Stainless Steel","authors":"Min-Seung Cho, Choong-Nyeon Park, Chan‐Jin Park","doi":"10.14773/CST.2019.18.3.73","DOIUrl":"https://doi.org/10.14773/CST.2019.18.3.73","url":null,"abstract":"Hot-dip aluminized coating has been widely used to protect steel substrate against corrosion. In this study, the corrosion behavior of hot-dip aluminized type 409L (11% Cr) stainless steel (SS) was investigated using macro- and micro-scale polarization tests. An Al-Fe-Si alloy layer that was formed due to inter-diffusion of alloying elements between Al coating and SS substrate was observed between Al coating and 409L SS substrate. In both macro- and micro-scale polarization tests, the corrosion potential ( E corr ) of the 409L SS substrate was much nobler than that of the Al coating and alloy layer. E corr of the alloy layer was between that of Al coating and 409L SS substrate. This indicates that the alloy layer can act as a buffer between the more active Al coating and the nobler SS substrate for pit growth in aluminized SS. The presence of the alloy layer appears to be helpful in hindering pitting corrosion of aluminized SS.","PeriodicalId":43201,"journal":{"name":"Corrosion Science and Technology-Korea","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47573062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-30DOI: 10.14773/CST.2019.18.3.78
Munsu Kim, Jin-A Jeong
{"title":"Corrosion Behavior of Carbon Steel in Diluted Sulfuric Acid based on Seawater","authors":"Munsu Kim, Jin-A Jeong","doi":"10.14773/CST.2019.18.3.78","DOIUrl":"https://doi.org/10.14773/CST.2019.18.3.78","url":null,"abstract":"","PeriodicalId":43201,"journal":{"name":"Corrosion Science and Technology-Korea","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43505595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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