Pub Date : 2021-06-30DOI: 10.14773/CST.2021.20.3.152
박영주, 유진석, 심성구, 정찬영
Stainless steel is a metal that does not generate rust. Due to its excellent workability, economic feasibility, and corrosion resistance, it is used in various industrial fields such as ships, piping, nuclear power, and machinery. However, stainless steel is vulnerable to corrosion in harsh environments. To solve this problem, its corrosion resistance could be improved by electrochemically forming an anodized film on its surface. In this study, 316L stainless steel was anodized at room temperature with ethylene glycol-based 0.1 M NH4F and 0.1M H2O electrolyte to adjust the thickness of the oxide film using different anodic oxidation voltages (30 V, 50 V, and 70 V) with time control. The anodic oxidation experiment was performed by increasing the time from 1 hour to 7 hours at 2-hour intervals. Corrosion resistance according to the thickness of the anodic oxide film was observed. Electrochemical corrosion behavior of oxide films was investigated through polarization experiments.
{"title":"스테인리스 스틸의 표면 산화피막 성장과 내부식성 상관관계","authors":"박영주, 유진석, 심성구, 정찬영","doi":"10.14773/CST.2021.20.3.152","DOIUrl":"https://doi.org/10.14773/CST.2021.20.3.152","url":null,"abstract":"Stainless steel is a metal that does not generate rust. Due to its excellent workability, economic feasibility, and corrosion resistance, it is used in various industrial fields such as ships, piping, nuclear power, and machinery. However, stainless steel is vulnerable to corrosion in harsh environments. To solve this problem, its corrosion resistance could be improved by electrochemically forming an anodized film on its surface. In this study, 316L stainless steel was anodized at room temperature with ethylene glycol-based 0.1 M NH4F and 0.1M H2O electrolyte to adjust the thickness of the oxide film using different anodic oxidation voltages (30 V, 50 V, and 70 V) with time control. The anodic oxidation experiment was performed by increasing the time from 1 hour to 7 hours at 2-hour intervals. Corrosion resistance according to the thickness of the anodic oxide film was observed. Electrochemical corrosion behavior of oxide films was investigated through polarization experiments.","PeriodicalId":43201,"journal":{"name":"Corrosion Science and Technology-Korea","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48341863","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 : 2021-06-30DOI: 10.14773/CST.2021.20.3.118
Y. Jung, Heemoon Kim
The oxide layer in samples taken from an irradiated Zr-2.5Nb pressure tube from a CANDU-PHWR reactor was analyzed using electron probe microanalysis (EPMA). The examined tube had been exposed to temperatures ranging from 264 to 306 ℃ and a neutron fluence of 8.9 × 1021 n/㎠ (E > 1 MeV) for the maximum 10 effective full-power years in a nuclear power plant. Measuring oxide layer thickness generally employs optical microscopy. However, in this study, analysis of the oxide layer from the irradiated pressure tube components was undertaken through X-ray image mapping obtained using EPMA. The oxide layer characteristics were analyzed by X-ray image mapping with 256 × 256 pixels using EPMA. In addition, the slope of the oxide layer was measured for each location. A particular advantage of this study was that backscattered electrons and X-ray image mapping were obtained at a magnification of 9,000 when 20 kV volts and 30 uA of current were applied to radiation-shielded EPMA. The results of this study should usefully contribute to the study of the oxide layer properties of various types of metallic materials irradiated by high radiation in nuclear power plants.
{"title":"A way Analyzing Oxide Layer on an Irradiated CANDU-PHWR Pressure Tube Using an EPMA and X-ray Image Mapping","authors":"Y. Jung, Heemoon Kim","doi":"10.14773/CST.2021.20.3.118","DOIUrl":"https://doi.org/10.14773/CST.2021.20.3.118","url":null,"abstract":"The oxide layer in samples taken from an irradiated Zr-2.5Nb pressure tube from a CANDU-PHWR reactor was analyzed using electron probe microanalysis (EPMA). The examined tube had been exposed to temperatures ranging from 264 to 306 ℃ and a neutron fluence of 8.9 × 1021 n/㎠ (E > 1 MeV) for the maximum 10 effective full-power years in a nuclear power plant. Measuring oxide layer thickness generally employs optical microscopy. However, in this study, analysis of the oxide layer from the irradiated pressure tube components was undertaken through X-ray image mapping obtained using EPMA. The oxide layer characteristics were analyzed by X-ray image mapping with 256 × 256 pixels using EPMA. In addition, the slope of the oxide layer was measured for each location. A particular advantage of this study was that backscattered electrons and X-ray image mapping were obtained at a magnification of 9,000 when 20 kV volts and 30 uA of current were applied to radiation-shielded EPMA. The results of this study should usefully contribute to the study of the oxide layer properties of various types of metallic materials irradiated by high radiation in nuclear power plants.","PeriodicalId":43201,"journal":{"name":"Corrosion Science and Technology-Korea","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42647511","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 : 2021-06-30DOI: 10.14773/CST.2021.20.3.112
S. Chun, Seong-Jong Kim
Inductively coupled plasma magnetron sputtering (ICPMS) has the advantage of being able to dramatically improve coating properties by increasing the plasma ionization rate and the ion bombardment effect during deposition. Thus, this paper presents the comparative results of CrN films deposited by direct current magnetron sputtering (dcMS) and ICPMS systems. The structure, microstructure, and mechanical and corrosive properties of the CrN coatings were investigated by X-ray diffractometry, scanning electron microscopy, nanoindentation, and corrosion-resistance measurements. The as-deposited CrN films by ICPMS grew preferentially on a 200 plane compared to dcMS on a 111 plane. As a result, the films deposited by ICPMS had a very compact microstructure with high hardness. The nanoindentation hardness reached 19.8 GPa, and 13.5 GPa by dcMS. The corrosion current density of CrN film prepared by ICPMS was about 9.8 × 10 -6 mA/cm 2 , which was 1/470 of 4.6 × 10 -3 mA/cm 2 , the corrosion current density of CrN film prepared by dcMS.
{"title":"Enhancement of the Corrosion Resistance of CrN Film Deposited by Inductively Coupled Plasma Magnetron Sputtering","authors":"S. Chun, Seong-Jong Kim","doi":"10.14773/CST.2021.20.3.112","DOIUrl":"https://doi.org/10.14773/CST.2021.20.3.112","url":null,"abstract":"Inductively coupled plasma magnetron sputtering (ICPMS) has the advantage of being able to dramatically improve coating properties by increasing the plasma ionization rate and the ion bombardment effect during deposition. Thus, this paper presents the comparative results of CrN films deposited by direct current magnetron sputtering (dcMS) and ICPMS systems. The structure, microstructure, and mechanical and corrosive properties of the CrN coatings were investigated by X-ray diffractometry, scanning electron microscopy, nanoindentation, and corrosion-resistance measurements. The as-deposited CrN films by ICPMS grew preferentially on a 200 plane compared to dcMS on a 111 plane. As a result, the films deposited by ICPMS had a very compact microstructure with high hardness. The nanoindentation hardness reached 19.8 GPa, and 13.5 GPa by dcMS. The corrosion current density of CrN film prepared by ICPMS was about 9.8 × 10 -6 mA/cm 2 , which was 1/470 of 4.6 × 10 -3 mA/cm 2 , the corrosion current density of CrN film prepared by dcMS.","PeriodicalId":43201,"journal":{"name":"Corrosion Science and Technology-Korea","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47206649","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 : 2021-04-30DOI: 10.14773/CST.2021.20.2.69
Hobyung Chae, W. Kim, Heesan Kim, Jung-Gu Kim, Kyung Min Kim, Soo Yeol Lee, 채호병, 김우철, 김희산, 김정구, 김경민, 이수열
{"title":"Corrosion Failure Analysis of Condensate Pre-Heater in Heat Recovery Steam Generator, 배열회수보일러 복수예열기 부식 파손 분석","authors":"Hobyung Chae, W. Kim, Heesan Kim, Jung-Gu Kim, Kyung Min Kim, Soo Yeol Lee, 채호병, 김우철, 김희산, 김정구, 김경민, 이수열","doi":"10.14773/CST.2021.20.2.69","DOIUrl":"https://doi.org/10.14773/CST.2021.20.2.69","url":null,"abstract":"","PeriodicalId":43201,"journal":{"name":"Corrosion Science and Technology-Korea","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2021-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42281407","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 : 2021-04-30DOI: 10.14773/CST.2021.20.2.94
Ju-Heon Yun, Dooyoul Lee, Sungryul Park, Minseng Kim, Dong-Zin Choi
{"title":"The Effect of Aircraft Parking Environment on Atmospheric Corrosion Severity, 항공기 주기환경이 대기부식위험도에 미치는 영향","authors":"Ju-Heon Yun, Dooyoul Lee, Sungryul Park, Minseng Kim, Dong-Zin Choi","doi":"10.14773/CST.2021.20.2.94","DOIUrl":"https://doi.org/10.14773/CST.2021.20.2.94","url":null,"abstract":"","PeriodicalId":43201,"journal":{"name":"Corrosion Science and Technology-Korea","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2021-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48692913","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 : 2021-04-30DOI: 10.14773/CST.2021.20.2.85
S. Chong, Seong-Jong Kim, 정상옥, 김성종
{"title":"The Effect of Seawater Temperature on the Electrochemical Corrosion Behaviour of Stainless Steels and Anodized Aluminum Alloys, 스테인리스강과 양극산화된 알루미늄 합금의 전기화학적 부식특성에 미치는 해수온도의 영향","authors":"S. Chong, Seong-Jong Kim, 정상옥, 김성종","doi":"10.14773/CST.2021.20.2.85","DOIUrl":"https://doi.org/10.14773/CST.2021.20.2.85","url":null,"abstract":"","PeriodicalId":43201,"journal":{"name":"Corrosion Science and Technology-Korea","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2021-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45212096","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 : 2021-04-30DOI: 10.14773/CST.2021.20.2.52
K. Jung, Seong-Jong Kim
{"title":"An Investigation on Application of Experimental Design and Linear Regression Technique to Predict Pitting Potential of Stainless Steel","authors":"K. Jung, Seong-Jong Kim","doi":"10.14773/CST.2021.20.2.52","DOIUrl":"https://doi.org/10.14773/CST.2021.20.2.52","url":null,"abstract":"","PeriodicalId":43201,"journal":{"name":"Corrosion Science and Technology-Korea","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2021-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48313750","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 : 2021-04-30DOI: 10.14773/CST.2021.20.2.62
K. Jung, Seong-Jong Kim
{"title":"An Experimental Investigation of the Application of Artificial Neural Network Techniques to Predict the Cyclic Polarization Curves of AL-6XN Alloy with Sensitization","authors":"K. Jung, Seong-Jong Kim","doi":"10.14773/CST.2021.20.2.62","DOIUrl":"https://doi.org/10.14773/CST.2021.20.2.62","url":null,"abstract":"","PeriodicalId":43201,"journal":{"name":"Corrosion Science and Technology-Korea","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2021-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46716268","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 : 2021-04-30DOI: 10.14773/CST.2021.20.2.45
A. Setiawan, Muhammad Dani Rachman
{"title":"An Investigation of Pulse Anodization Duty Ratio and Sealing Treatment on the Corrosion Behavior of the Anodic Coating Layer in Magnesium AZ31B","authors":"A. Setiawan, Muhammad Dani Rachman","doi":"10.14773/CST.2021.20.2.45","DOIUrl":"https://doi.org/10.14773/CST.2021.20.2.45","url":null,"abstract":"","PeriodicalId":43201,"journal":{"name":"Corrosion Science and Technology-Korea","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2021-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46373006","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 : 2021-04-30DOI: 10.14773/CST.2021.20.2.77
Kwang-Hu Jung, Seong-Jong Kim, 정광후, 김성종
{"title":"Optimization of DL-EPR Test Solution for Duplex Stainless Steel S31083 Using Taguchi Design, 다구찌 설계를 이용한 듀플렉스 스테인리스강 S31083용 DL-EPR 시험용액의 최적화","authors":"Kwang-Hu Jung, Seong-Jong Kim, 정광후, 김성종","doi":"10.14773/CST.2021.20.2.77","DOIUrl":"https://doi.org/10.14773/CST.2021.20.2.77","url":null,"abstract":"","PeriodicalId":43201,"journal":{"name":"Corrosion Science and Technology-Korea","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2021-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47054647","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：