Proceedings of 1st Corrosion and Materials Degradation Web Conference最新文献

{"title":"Stability of the HPC/PU polymeric blends in accelerated weathering and biological environments","authors":"M. Zaltariov, C. Varganici, D. Filip, D. Macocinschi","doi":"10.3390/cmdwc2021-10034","DOIUrl":"https://doi.org/10.3390/cmdwc2021-10034","url":null,"abstract":": Polymeric blends of Hydroxypropyl cellulose (HPC) and Polyurethane (PU) 9 (PU/HPC_20/80; PU/HPC_50/50; PU/HPC_80/20) have been prepared by solvent (DMF) 10 casting method and investigated after exposure to accelerated ageing conditions by using a 11 mercury lamp (200 < λ < 700 nm), at 60% humidity and 40 o C for 600 h. Their hydrolytic 12 stability was evaluated after immersing them for 48 h in different pH (2.6 and 7.4) 13 Phosphate-Buffered Saline (PBS) media. The structural changes in the composition of blends 14 during the accelerated weathering and hydrolysis processes have been investigated by means 15 of FT-IR (Fourier Transform Infrared) spectroscopy and DSC (Differential Scanning 16 Calorimetry) analysis. FT-IR spectra of the blends after 600 h of irradiation and 48 h 17 hydrolysis in PBS solutions revealed a major degradation process especially in the HPC 18 component and in the soft segment of PU. The changes in the crystallinity of the blends have 19 been also evaluated by FT-IR (by determination of Total Crystallinity Index (TCI) and 20 Lateral Order Index (LOI)) and DSC that evidenced the reduction of the melting enthalpy 21 (( ∆ H m ) and of its corresponding crystallization ( Tc ) on heating/cooling runs indicated that 22 ageing strongly affects the crystallinity of the PU/HPC blends.","PeriodicalId":20503,"journal":{"name":"Proceedings of 1st Corrosion and Materials Degradation Web Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75131808","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}

{"title":"The case studies of MIC in different water environments","authors":"K. Kreislová, Marketa Mosnickova, L. Turek, P. Fialová","doi":"10.3390/cmdwc2021-10028","DOIUrl":"https://doi.org/10.3390/cmdwc2021-10028","url":null,"abstract":"There are presented case studies of MIC in various industrial systems, mainly from carbon and stainless steels, which failed - water pipeline, sprinkler systems, sewage pipeline, cooling pipeline, water tanks, etc.. The identification of MIC was done according to morphology of corroded surface, chemical analysis of deposits, water analysis, etc. Bacterial tests for BSR and IRB were done, too.","PeriodicalId":20503,"journal":{"name":"Proceedings of 1st Corrosion and Materials Degradation Web Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73105547","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}

{"title":"In situ aqueous stability of Mg-Li-(Al-Y) alloy: role of Li","authors":"P. Volovitch, A. Maltseva, Yuan-Wei Yan, K. Ogle, N. Birbilis","doi":"10.3390/cmdwc2021-10025","DOIUrl":"https://doi.org/10.3390/cmdwc2021-10025","url":null,"abstract":"The role of lithium in the mechanisms of aqueous stability of Mg-Li alloys was explored by combining in situ and ex situ surface and solution characterization. In situ surface evolution of a corrosion resistant Mg-Li(-Al-Y-Zr)-alloy in aqueous NaCl solution was studied by confocal Raman Microscopy and Kinetic Raman Mapping [1], real time solution analysis was made with Atomic Emission SpectroElectroChemistry [2]. Additional ex situ surface characterizations by Photoluminiscence Spectroscopy, Auger Electron Spectroscopy and Glow Discharge Optical Emission Spectroscopy were made immediately after the aqueous exposure and after exposure to ambient air. \u0000In situ analyses demonstrated that both Li and Mg dissolved in aqueous solutions from visually intact anodic areas, leaving a Li-depleted metallic layer under an approximately 100 nm thick Li-doped MgO. Interestingly, in these areas the growth of magnesium hydroxide (Mg(OH)2) was very slow than in pure Mg, suggesting that the kinetics of the transformation MgO→Mg(OH)2 was strongly inhibited. On the cathodic areas, local accumulation of Li2[Al2(OH)6]2·CO3·nH2O (Li-Al layered double hydroxide), LiAlO2, Y2O3 and Mg(OH)2 was observed. Li2CO3, previously considered as a component of a protective film responsible for corrosion resistance of Mg-Li alloys [3], was not present in situ on the surface evolving in aqueous solution and was detected only ex situ after the exposure to ambient air. \u0000The proposed corrosion mechanism attributes the improvement of aqueous corrosion resistance of Mg-Li alloys to the increase of the chemical stability of MgO doped by Li+ [4]. The latter could be formed thanks to selectively leached in the solution Li+. Additionally, cathodic activation of Mg can be reduced on Li-doped MgO and Li-Al layered double hydroxide, detected in situ on cathodic areas. Pilling Bedworth ratios (PBR), calculated for lithium doped MgO film on Mg-Li alloys with different Li content, demonstrated that the condition of a protective film on Mg-Li alloy (PBR>1) requires a minimal Li concentration in the alloy close to 15-18 at. %. \u0000[1] A. Maltseva, V. Shkirskiy, G. Lefevre, P. Volovitch, Corrosion Science, 153 (2019) 272-282. \u0000[2] Y. Yan, P. Zhou, O. Gharbi, Z. Zeng, X. Chen, P. Volovitch, K. Ogle, N. Birbilis, Electrochemistry Communications, 99 (2019) 46-50 \u0000[3] L. Hou, M. Raveggi, X.-B. Chen, W. Xu, K.J. Laws, Y. Wei, M. Ferry, N. Birbilis, Journal of The Electrochemical Society, 163 (2016) C324-C329 \u0000[4] Y.M. Yan, A. Maltseva, P. Zhou, X.J. Li, Z.R. Zeng, O. Gharbi, K. Ogle, M. La Haye, M. Vaudescal, M. Esmaily, N. Birbilis, P. Volovitch, Corrosion Science, 2020, 164, 108342","PeriodicalId":20503,"journal":{"name":"Proceedings of 1st Corrosion and Materials Degradation Web Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90447428","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}

{"title":"Corrosion under basalt fiber materials","authors":"S. I. Gutnikov, Y. Pavlov, S. Popov","doi":"10.3390/cmdwc2021-10029","DOIUrl":"https://doi.org/10.3390/cmdwc2021-10029","url":null,"abstract":"The article presents the results of a study, of the effect of basalt fiber materials on the corros1on resistance of pipe metals. The samples of basalt fibers were studied as a reason of corrosion. The tests were made according to ASTM G189 \"Standard guide for laboratory simulat1on of corrosion under insulation\". During the work, an experimental laboratory facility was designed to determine the corrosion rate under materials. To research the effect of the chemical composition of the samples on the corrosion process under fiber materials the influence of the leaching of chemically active anions after wetting and heating of basalt fiber were investigated. Based on the obtained results, the main factors contributing to the development of corrosion under insulation were determined, and recommendations for reduction were given. It was found that samples with open porosity showed a tower corrosion rate. The reported study was funded by RFBR according to the research project № 18-29-17068.","PeriodicalId":20503,"journal":{"name":"Proceedings of 1st Corrosion and Materials Degradation Web Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77808957","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}

{"title":"The effect of de-icing salts on atmospheric corrosion of infrastructure","authors":"K. Kreislová, M. Kubzová, P. Fialová, Marketa Mosnickova","doi":"10.3390/cmdwc2021-10030","DOIUrl":"https://doi.org/10.3390/cmdwc2021-10030","url":null,"abstract":"","PeriodicalId":20503,"journal":{"name":"Proceedings of 1st Corrosion and Materials Degradation Web Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76490306","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}

{"title":"Multifunctional nanolayers, self-healing and slow release coatings against biocorrosion and biofouling - A review","authors":"J. Telegdi","doi":"10.3390/cmdwc2021-10006","DOIUrl":"https://doi.org/10.3390/cmdwc2021-10006","url":null,"abstract":"","PeriodicalId":20503,"journal":{"name":"Proceedings of 1st Corrosion and Materials Degradation Web Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74535457","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}

{"title":"Polyurethane protective coating at atmospheric corrosion","authors":"M. Rahman","doi":"10.3390/cmdwc2021-10000","DOIUrl":"https://doi.org/10.3390/cmdwc2021-10000","url":null,"abstract":"Most of the metals exposed at atmospheric condition can be easily corroded. Especially the presence of humidity, salinity and high temperature accelerates this type of corrosion. Such type of environment is common in most part of the Saudi Arabia. The open exposed metal and their structures such as pipelines, storage tanks, pillars of solar energy, and infrastructures corroded shortly in Kingdom. Different organic coatings usually used to protect this metal and metal structures. The protection worked properly at early stage. The coating failed before the expected duration. It has been found that the UV-degradation of coating hugely affect this failure. In this study polyurethane (PU) formulations with dual function as corrosion and UV-degradation protection-based coating developed. Oil fly ash, a local industry biproduct, also used in formulation to improve the corrosion and UV-degradation resistance.","PeriodicalId":20503,"journal":{"name":"Proceedings of 1st Corrosion and Materials Degradation Web Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90507220","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}

{"title":"A comparison between the effects of different deicers on external corrosion of buried pipes","authors":"X. Shi, Mehdi Honarvar Nazari","doi":"10.3390/cmdwc2021-09999","DOIUrl":"https://doi.org/10.3390/cmdwc2021-09999","url":null,"abstract":"","PeriodicalId":20503,"journal":{"name":"Proceedings of 1st Corrosion and Materials Degradation Web Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82334358","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}

{"title":"Corrosion inhibition of carbon steel in hydrochloric acid solution using 5-(4-Pyridyl)-1,3,4-oxadiazole-2-thiol","authors":"S. Varvara, G. Damian, C. Berghian-Groșan, M. Popa, F. Popa","doi":"10.3390/cmdwc2021-10005","DOIUrl":"https://doi.org/10.3390/cmdwc2021-10005","url":null,"abstract":"","PeriodicalId":20503,"journal":{"name":"Proceedings of 1st Corrosion and Materials Degradation Web Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80363371","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}

{"title":"Durable corrosion protection of AA2024-T3 using hybrid sol-gel coatings modified with various fluorinated (meth) acrylates","authors":"P. Rodič, Žan Gostenčnik, Barbara Kapun, I. Milošev","doi":"10.3390/cmdwc2021-10003","DOIUrl":"https://doi.org/10.3390/cmdwc2021-10003","url":null,"abstract":"","PeriodicalId":20503,"journal":{"name":"Proceedings of 1st Corrosion and Materials Degradation Web Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82830821","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}