Pub Date : 2023-04-19DOI: 10.31044/1684-579x-2023-0-4-41-48
L. Fedorov, A. Ushakov, I. Karpov, E. Goncharova, M. Brungardt
В работе исследованы сверхпроводящие поликристаллические композиты YBa2Cu3O7-x + MoO3 с содержанием нановолокон MoO3 1, 5, 10, 15% (мас.). Из измерений электрического сопротивления определены температура и ширина перехода в сверхпроводящее состояние образцов с описанием вероятных механизмов наблюдаемых изменений. Из измерений микротвердости по Виккерсу определены модуль упругости, предел текучести, вязкость разрушения и индекс хрупкости. При исследованиях физико-механических свойств объемных образцов ВТСП содержащих MoO3, для интерпретации данных микроиндентирования и объяснения результатов с учетом эффекта размера вдавливания было использовано пять различных моделей.
{"title":"Investigation of the microhardness of composite materials high-temperature superconductor YBCO—MoO3 nanofibers","authors":"L. Fedorov, A. Ushakov, I. Karpov, E. Goncharova, M. Brungardt","doi":"10.31044/1684-579x-2023-0-4-41-48","DOIUrl":"https://doi.org/10.31044/1684-579x-2023-0-4-41-48","url":null,"abstract":"В работе исследованы сверхпроводящие поликристаллические композиты YBa2Cu3O7-x + MoO3 с содержанием нановолокон MoO3 1, 5, 10, 15% (мас.). Из измерений электрического сопротивления определены температура и ширина перехода в сверхпроводящее состояние образцов с описанием вероятных механизмов наблюдаемых изменений. Из измерений микротвердости по Виккерсу определены модуль упругости, предел текучести, вязкость разрушения и индекс хрупкости. При исследованиях физико-механических свойств объемных образцов ВТСП содержащих MoO3, для интерпретации данных микроиндентирования и объяснения результатов с учетом эффекта размера вдавливания было использовано пять различных моделей.","PeriodicalId":49875,"journal":{"name":"Materials Science-Poland","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42976582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The aim of this paper is to determine the influence of relative humidity on the comfort and electrical resistance properties of textile laminates in order to predict possible changes in footwear protection levels. Four textile laminates of different structure and fibre nature were selected for the study. It was determined that water vapour absorption of textile laminates strongly depends on the humidity of the storage environment. The absorption ability of laminates increases about 1.8 – 3 times as relative humidity increases from 65 % up to 95 %. The degree of increase depends on the textile laminate structure and the nature of the materials layers. The electrical properties of protective footwear can be influenced by the structure, thickness, relative humidity, and voltage of textile laminates. For textile laminates composed of natural and synthetic fibres and polymer foam as insulators, the resistivity increases with the thickness of the synthetic fibre and polymer layer. At low voltage (U = 100 V), the textile laminates tested became insulating materials, as the electrical resistivity exceeded the threshold values for antistatic materials in all relative humidity ranges. At high voltage (U = 500 V) the electrical resistivity of textile the laminates drops dramatically when the relative air humidity increases and the level of protection of the laminates depend on the amount of moisture absorbed and the nature of the layer materials. The laminates possessed insulating properties in environments of up to 65 % relative humidity. In a high humidity of the environment, the insulating properties of textile laminates turned to antistatic, except for laminate without a polymeric membrane, which became conductive.
{"title":"Influence of Relative Humidity on Electrical Properties of Textile Laminates","authors":"A. Gulbinienė, Loreta Valatkienė","doi":"10.5755/j02.ms.33601","DOIUrl":"https://doi.org/10.5755/j02.ms.33601","url":null,"abstract":"The aim of this paper is to determine the influence of relative humidity on the comfort and electrical resistance properties of textile laminates in order to predict possible changes in footwear protection levels. Four textile laminates of different structure and fibre nature were selected for the study. It was determined that water vapour absorption of textile laminates strongly depends on the humidity of the storage environment. The absorption ability of laminates increases about 1.8 – 3 times as relative humidity increases from 65 % up to 95 %. The degree of increase depends on the textile laminate structure and the nature of the materials layers. The electrical properties of protective footwear can be influenced by the structure, thickness, relative humidity, and voltage of textile laminates. For textile laminates composed of natural and synthetic fibres and polymer foam as insulators, the resistivity increases with the thickness of the synthetic fibre and polymer layer. At low voltage (U = 100 V), the textile laminates tested became insulating materials, as the electrical resistivity exceeded the threshold values for antistatic materials in all relative humidity ranges. At high voltage (U = 500 V) the electrical resistivity of textile the laminates drops dramatically when the relative air humidity increases and the level of protection of the laminates depend on the amount of moisture absorbed and the nature of the layer materials. The laminates possessed insulating properties in environments of up to 65 % relative humidity. In a high humidity of the environment, the insulating properties of textile laminates turned to antistatic, except for laminate without a polymeric membrane, which became conductive.","PeriodicalId":49875,"journal":{"name":"Materials Science-Poland","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48887895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Essential steel components with variable cross-section are fabricated from welded plates, which are primarily employed for the growth of the construction industry in beams according to the stress and stiffness requirements of the structure. Lateral-torsional buckling, in which the beam experiences non-uniform twisting and buckling about its weaker axis, is one of the most common failure modes. This dissertation focuses primarily on the lateral-torsional buckle of non-prismatic I-beams. The development of differential equations for deformation analysis of the non-prismatic beam. ANSYS results and deformation equation results are compared to validate the methodology. Using ANSYS, the lateral torsional buckling of a non-prismatic I-beam section with uniformly distributed load is analyzed. In finite element analyses, the solid element approach is used to determine the lateral buckling load for various cross-sections (β = 0.1 to 1.0) by analyzing their behavior. In addition, a stiffener is used to prevent lateral buckling, and the results are compared to a model without stiffeners.
{"title":"Lateral-Torsional Buckling of Non-Prismatic I-Beams Using FEM Approach","authors":"Senthilpandian Mariappan, Karthiyaini Somasundaram, Shanmugasundaram Muthusamy, Deepa Nivethika Sivasubramani, Adapala Sunny Suprakash, Karthikeyan Kothandapani","doi":"10.5755/j02.ms.33151","DOIUrl":"https://doi.org/10.5755/j02.ms.33151","url":null,"abstract":"Essential steel components with variable cross-section are fabricated from welded plates, which are primarily employed for the growth of the construction industry in beams according to the stress and stiffness requirements of the structure. Lateral-torsional buckling, in which the beam experiences non-uniform twisting and buckling about its weaker axis, is one of the most common failure modes. This dissertation focuses primarily on the lateral-torsional buckle of non-prismatic I-beams. The development of differential equations for deformation analysis of the non-prismatic beam. ANSYS results and deformation equation results are compared to validate the methodology. Using ANSYS, the lateral torsional buckling of a non-prismatic I-beam section with uniformly distributed load is analyzed. In finite element analyses, the solid element approach is used to determine the lateral buckling load for various cross-sections (β = 0.1 to 1.0) by analyzing their behavior. In addition, a stiffener is used to prevent lateral buckling, and the results are compared to a model without stiffeners.","PeriodicalId":49875,"journal":{"name":"Materials Science-Poland","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45275887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
As a raw material, phosphorus availability in agriculture has been a critical concern in terms of phosphate rock consumption related to a price-dependent supply-demand chain. Novel approaches have been proposed for alternative phosphorus sources in agricultural applications. Although nano-hydroxyapatite (nHA) is a commonly used bioceramic material, its utilization as an alternative phosphorus fertilizer is an emerging field. Phosphogypsum (PG), a by-product of wet process phosphoric acid production, is a promising raw material for nHA production. With an approximate 300 Mton annual accumulation rate of PG puts pressure on the research for introducing alternative strategies for the resource utilization of legacy PG piles in an environment-friendly and cost-efficient manner. Valorization of PG as the calcium and phosphorus precursor in nHA production would both provide an efficient waste management strategy and low-cost raw material. This study gives a brief review of the various synthesis routes on PG-derived nHA and criticizes nHA utilization as a phosphorus fertilizer.
{"title":"An Evaluation of Phosphogypsum (PG) -Derived Nanohydroxyapatite (HAP) Synthesis Methods and Waste Management as a Phosphorus Source in the Agricultural Industry","authors":"Cemre Avşar, A. O. Gezerman","doi":"10.5755/j02.ms.31695","DOIUrl":"https://doi.org/10.5755/j02.ms.31695","url":null,"abstract":"As a raw material, phosphorus availability in agriculture has been a critical concern in terms of phosphate rock consumption related to a price-dependent supply-demand chain. Novel approaches have been proposed for alternative phosphorus sources in agricultural applications. Although nano-hydroxyapatite (nHA) is a commonly used bioceramic material, its utilization as an alternative phosphorus fertilizer is an emerging field. Phosphogypsum (PG), a by-product of wet process phosphoric acid production, is a promising raw material for nHA production. With an approximate 300 Mton annual accumulation rate of PG puts pressure on the research for introducing alternative strategies for the resource utilization of legacy PG piles in an environment-friendly and cost-efficient manner. Valorization of PG as the calcium and phosphorus precursor in nHA production would both provide an efficient waste management strategy and low-cost raw material. This study gives a brief review of the various synthesis routes on PG-derived nHA and criticizes nHA utilization as a phosphorus fertilizer.","PeriodicalId":49875,"journal":{"name":"Materials Science-Poland","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71238276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
To study the composite phase change hydrogel, the shape stabilized composite phase change materials of polyethylene glycol/polyacrylamide/silicon dioxide with different mass fractions of polyethylene glycol were successfully prepared by the combination of in-situ polymerization and sol-gel method. The 3D network formed by polyacrylamide /silicon dioxide cross-linking has abundant pores, which is conducive to polyethylene glycol encapsulation and prevent polyethylene glycol leakage. At the same time, the hydrogel-based support can buffer the thermal stress caused by phase change. According to the analysis results of differential scanning calorimetry, composite phase change materials have a high phase transition enthalpy of 126.9 J/g. In addition, this new type of composite phase change materials has good thermal stability and remains stable in shape at 110 ℃ without any leakage. The composite phase change hydrogel provides an alternative approach for the investigation of phase change materials.
{"title":"Synthesis and Performance Analysis of a Novel Phase Change Hydrogel Polyethylene Glycol/Polyacrylamide/Silicon Dioxide for Thermal Energy Storage","authors":"Yang Chen, Yanlei Pei, Xueteng Yang","doi":"10.5755/j02.ms.32914","DOIUrl":"https://doi.org/10.5755/j02.ms.32914","url":null,"abstract":"To study the composite phase change hydrogel, the shape stabilized composite phase change materials of polyethylene glycol/polyacrylamide/silicon dioxide with different mass fractions of polyethylene glycol were successfully prepared by the combination of in-situ polymerization and sol-gel method. The 3D network formed by polyacrylamide /silicon dioxide cross-linking has abundant pores, which is conducive to polyethylene glycol encapsulation and prevent polyethylene glycol leakage. At the same time, the hydrogel-based support can buffer the thermal stress caused by phase change. According to the analysis results of differential scanning calorimetry, composite phase change materials have a high phase transition enthalpy of 126.9 J/g. In addition, this new type of composite phase change materials has good thermal stability and remains stable in shape at 110 ℃ without any leakage. The composite phase change hydrogel provides an alternative approach for the investigation of phase change materials.","PeriodicalId":49875,"journal":{"name":"Materials Science-Poland","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43766969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-01DOI: 10.1007/s11003-023-00716-z
O. Glotka, V. Olshanetskii
{"title":"Mathematical Prediction of the Properties of Heat-Resistant Nickel Alloys After Directional Crystallization","authors":"O. Glotka, V. Olshanetskii","doi":"10.1007/s11003-023-00716-z","DOIUrl":"https://doi.org/10.1007/s11003-023-00716-z","url":null,"abstract":"","PeriodicalId":49875,"journal":{"name":"Materials Science-Poland","volume":"58 1","pages":"679 - 685"},"PeriodicalIF":1.1,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47299689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-01DOI: 10.1007/s11003-023-00715-0
M. Maksymovych, O. Maksymovych, M. Dutkiewicz
{"title":"Calculation of Stresses in Composite Strips with Cracks on the Base of Modified Integral Equations Taking into Account the Contact of their Edges","authors":"M. Maksymovych, O. Maksymovych, M. Dutkiewicz","doi":"10.1007/s11003-023-00715-0","DOIUrl":"https://doi.org/10.1007/s11003-023-00715-0","url":null,"abstract":"","PeriodicalId":49875,"journal":{"name":"Materials Science-Poland","volume":"58 1","pages":"670 - 678"},"PeriodicalIF":1.1,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47800959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-01DOI: 10.1007/s11003-023-00703-4
A. Klymenko, S. Kovalenko, G. Polishko, A. Tunik, M. V. Byk, O. Buket, O. A. Shapiro
{"title":"Corrosion Resistance of AISI 310s Stainless Steel in Lead Melt at a Temperature of 450°C","authors":"A. Klymenko, S. Kovalenko, G. Polishko, A. Tunik, M. V. Byk, O. Buket, O. A. Shapiro","doi":"10.1007/s11003-023-00703-4","DOIUrl":"https://doi.org/10.1007/s11003-023-00703-4","url":null,"abstract":"","PeriodicalId":49875,"journal":{"name":"Materials Science-Poland","volume":"58 1","pages":"591 - 596"},"PeriodicalIF":1.1,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48388070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-01DOI: 10.1007/s11003-023-00701-6
D. Abdulina, M. Vortman, G. Iutynska, L. Purish, Z. Kopteva, G. E. Kopteva, V. Lemeshko, V. Shevchenko
{"title":"Guanidine-Containing Alkyl-Substituted Oligomer as a Metal Corrosion Inhibitor","authors":"D. Abdulina, M. Vortman, G. Iutynska, L. Purish, Z. Kopteva, G. E. Kopteva, V. Lemeshko, V. Shevchenko","doi":"10.1007/s11003-023-00701-6","DOIUrl":"https://doi.org/10.1007/s11003-023-00701-6","url":null,"abstract":"","PeriodicalId":49875,"journal":{"name":"Materials Science-Poland","volume":"58 1","pages":"579 - 584"},"PeriodicalIF":1.1,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48704525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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