Materials Science最新文献

{"title":"Synthesis and Catalytic Properties of Ag(Pd) Bimetallic Nanoparticles","authors":"L. I. Bazylyak, R. B. Sheperovych, P. Ya. Liutyy, M. V. Shepida, O. I. Kuntyi, A. R. Kytsya","doi":"10.1007/s11003-024-00840-4","DOIUrl":"https://doi.org/10.1007/s11003-024-00840-4","url":null,"abstract":"<p>Ag(Pd) bimetallic nanostructures (Ag(Pd)NPs) were synthesized using the galvanic replacement of palladium ions with silver nanoparticles. Based on a comparative analysis of the results of scanning electron microscopy, energy dispersive X-ray microanalysis, and X-ray powder diffraction, it was established that the obtained Ag(Pd)NPs can be considered as “core-shell” nanosystems, in which the core is silver, and the shells are palladium nanoparticles with a size of 5–15 nm. Ag(Pd)NPs were studied as catalysts for the aerobic liquid-phase oxidation of benzyl alcohol. The addition of Ag(Pd)NPs to the reaction system accelerates the reaction in 14 times.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"8 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206046","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}

{"title":"Effect of Zeolite-Phosphate Anti-Corrosion Pigment on Protective Properties of Epoxy Coating on Carbon Steel","authors":"I. M. Zin, B. M. .O. P. DatskoKhlopyk, N. Yo. Sobodosh, S. A. Korniy","doi":"10.1007/s11003-024-00825-3","DOIUrl":"https://doi.org/10.1007/s11003-024-00825-3","url":null,"abstract":"<p>The effect of the zeolite-phosphate anti-corrosion pigment obtained by the mechanochemical method on the protective properties of the epoxy coating on carbon steel was investigated. Methods of electrochemical impedance spectroscopy, optical 3D profilometry, and tests in a heat and humidity chamber established that adding such a pigment to an epoxy primer significantly reduces the rate of the metal under-film corrosion.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"71 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206045","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}

{"title":"Effect of Specific Magnetic Susceptibility of AISI 304 and 08Kh18N10 Steels on Their Limiting Potentials in Chloride-Containing Environments","authors":"O. E. Narivskyi, G. V. Snizhnoi, T. V. Pulina, V. L. Snizhnoi, N. A. Solidor","doi":"10.1007/s11003-024-00824-4","DOIUrl":"https://doi.org/10.1007/s11003-024-00824-4","url":null,"abstract":"<p>The resistance of AISI 304 and 08Kh18N10 steels to crevice corrosion in chloride-containing media was studied using potential-dynamic methods. The preset gap width of 0.3 mm between the sample and the counter body simulates the gap between adjacent plates of plate-like heat exchangers. The area of the hysteresis loop of the constructed anode potential-dynamic curves of the forward and reverse stroke was used to compare the volume of local damage caused by crevice corrosion of the studied steels. The maximum areas of the steel hysteresis loop and the volume of local corrosion damage in the ingots with the lowest (2.23×10^–8 and 2.24×10^–8 m³/kg) and highest (2.31×10^–8 m³/kg) values of the specific paramagnetic susceptibility χ₀ of austenite were established. The free corrosion potential <i>E</i>_corr of steels intensively shifts in the negative direction (from –0.28 up to –0.41), and the repassivation <i>E</i>_rp and crevice corrosion <i>E</i>_crev – in the positive direction from –0.38 up to –0.29 and from –0.1 to 0.1 V, respectively, with an increase in the parameter χ₀ from 2.23×10^–8 up to 2.25×10^–8 m³/kg, which contributes to an increase in their ∆<i>E</i>-criterion from 0.02 up to 0.69 V and resistance to crevice corrosion. This is because, in this range of values, the change in the χ₀ parameter is determined by deviations in the content of C, N, S, P, and Cr in the solid solution of austenite in steels. With an increase in the parameter χ₀ of steels to 2.31×10^–8 m³/kg, their potential <i>E</i>_corr shifts in the positive direction from –0.41 up to –0.32, and <i>E</i>_rp , <i>E</i>_crev – in the negative direction from 0.29 up to 0.15 and from 0.10 up to –0.02 V, respectively, which contributes to a decrease in the ∆<i>E</i> criterion of steels from 0.65 up to 0.14 V and their resistance to crevice corrosion. The χ₀ parameter of steels is an integral characteristic of the paramagnetic state of austenite and can be used to assess their resistance to crevice corrosion in chloride-containing media.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"58 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141938683","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}

{"title":"Determination of the Residual Life of a Plate with a System of Cracks Under the Action of Long-Term Static Load and Corrosive Environment","authors":"O. Ye. Andreikiv, I. Ya. Dolinska, N. S. Zviahin, M. O. Liubchak","doi":"10.1007/s11003-024-00823-5","DOIUrl":"https://doi.org/10.1007/s11003-024-00823-5","url":null,"abstract":"<p>Using the energy approach, a calculation model was built to determine the period of subcritical growth of a system of cracks in metal plates, subjected to long-term static tension and local electrochemical corrosion. The effect of a corrosive environment on the residual life of a plate with a system of periodic and doubly periodic cracks was evaluated.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"9 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508768","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}

{"title":"New Materials for Controlling Water Inrush and Sealing Tunnel Karst Pipes","authors":"Zhenjun Wang, Qingsong ZHANG, Bing Hui, Rentai Liu, Daoguo TIAN, Yueqi ZHAO","doi":"10.5755/j02.ms.36078","DOIUrl":"https://doi.org/10.5755/j02.ms.36078","url":null,"abstract":"Water inrush disasters in karst areas have caused great losses to underground engineering construction, so it is urgent to control water gushing disasters in karst pipelines. In this paper, solution polymerization is used to prepare a grouting and sealing expanded matrix material to control disasters. Noncovalent weak interactions were used to improve the surface properties of the expanded matrix material, the effects of the natural polymer content on the properties of the matrix material were studied, and a modified expanded matrix material with an optimal response rate was prepared. A cross-linked curing agent (CCA) was developed and synthesized, and a new cross-linked expansive grouting and sealing material (WIS grouting material) with various particle sizes was synthesized with noncovalent interactions such as hydrogen bonding, static electricity, van der Waals forces, etc. The results showed that a 4 % solution polymer content (accounting for the particle mass of the expanded matrix) was the optimal dosage, and the optimal ratio of the modified expansion matrix material to the crosslinking curing agent was 1:1. The early compressive strength exceeded 0.2 MPa, and the water absorption rate reached 170 times. There was a power function relationship between the water absorption rate and time, and the rate was controlled by adjusting the particle sizes. The mechanism through which the WIS grouting material underwent expansion and crosslinking was explained at the microscopic level. The gel formed in response to water resisted dispersion in dynamic water and rapidly sealed karst pipe water gushers. This paper proposes a novel approach to utilizing the expansion characteristics of polymer chemical synthetic materials for crosslinking to seal karst pipe water gushers, effectively addressing the issue of poor resistance to dynamic water dispersion in traditional grouting materials used in karst areas. These results provide a scientific basis for the development and application of new materials to control water inrush in karst pipes.","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"30 3","pages":"351-359"},"PeriodicalIF":0.0,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://matsc.ktu.lt/index.php/MatSc/article/download/36078/16436","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147921463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Influence of Inclusions on Mechanical Characteristics of Structural-Heterogeneous Materials (A review)","authors":"V. P. Sylovanyuk, N. A. Ivantyshyn","doi":"10.1007/s11003-024-00813-7","DOIUrl":"https://doi.org/10.1007/s11003-024-00813-7","url":null,"abstract":"<p>A brief overview of studies on the influence of inclusions on the mechanical properties of structural materials was performed. The studies, where analytical dependences were obtained for predicting the mechanical properties of structurally heterogeneous materials (ultimate strength, fatigue limit, and crack growth resistance) depending on the shape, volume content, and size of inclusions, were mentioned.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"40 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508769","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}

{"title":"Degradation of Reinforced Concrete Construction of Bridge Structures: Corrosion Aspect","authors":"T. O. Nenastina, K. V. Berezhna, M. D. Sakhnenko, S. O. Buhaievskyi","doi":"10.1007/s11003-024-00809-3","DOIUrl":"https://doi.org/10.1007/s11003-024-00809-3","url":null,"abstract":"<p>Factors, which cause fracture of reinforced concrete constructions of bridge structures were considered. One of them is anti-icing material used for road safety in the winter period. The Ukrainian market of anti-icing chemical reagents and combined agents of natural and industrial origin was analyzed. The kinetics of corrosion fracture of 09G2S and St3 steels as the main material of reinforcement in neutral chloride-containing and alkaline solutions was investigated using the method of polarization resistance. Taking into account the kinetics of corrosion fracture of the studied steels, the rate of their general corrosion was calculated.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"30 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508771","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}

{"title":"Mechanical and Corrosion Properties of Fe–B–C Alloys","authors":"O. V. Sukhova","doi":"10.1007/s11003-024-00811-9","DOIUrl":"https://doi.org/10.1007/s11003-024-00811-9","url":null,"abstract":"<p>Mechanical and corrosion properties of Fe–B–C alloys (0.1–9 wt% B; 0.2–4 wt% C; Fe is balance) were investigated. Microhardness and compressive strength, resistance to abrasive, and gas-abrasive wear of the alloys were determined at room temperature. The corrosion rate was measured by gravimetric method in the following aqueous solutions: 0.5 M H₂SO₄ , 5 M H₃PO₄ , 0.8 M HNO₃ , 1 M HCl , 2 M CH₃COOH , 3 M NaCl, and 0.2 M Na₂SO₄ . The highest resistance to abrasive wear is shown by Fe–B–C alloys with high hardness and the highest resistance to gas-abrasive wear – by the alloys with high compressive strength. In a majority of the acidic and neutral media, the corrosion rate of Fe–B–C alloys decreased with increasing time due to the accumulation of corrosion products on the surface of the samples. The corrosion rate increased with an increase in the volume fractions of eutectic and austenite phases in the eutectic colonies or when interfaces between the primary and peritectic phases were formed in the structure. The Fe–B–C alloys demonstrated the highest corrosion resistance in the sodium chloride solution and the lowest one in the nitric acidic solution.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"25 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141512788","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}

{"title":"Calculation of Fuel Rod Strength Under Steady-State Operating Condition","authors":"S. S. Lys","doi":"10.1007/s11003-024-00814-6","DOIUrl":"https://doi.org/10.1007/s11003-024-00814-6","url":null,"abstract":"<p>The results of thermal calculations of the part of the fuel assembly of the active zone of the VVER-1000 reactor in the stationary mode of operation make it possible to evaluate the mechanical state of the fuel rod cladding, to understand the influence of reactor control methods on the strength and the design acceptance criteria. The main principles of the evaluation of mechanical characteristics of VVER-1000 fuel rods using the START-3 code are presented. The results of the prediction of the mechanical characteristics of the VVER-1000 fuel rods during the 4-year cycle in stationary mode under normal operating conditions and under their violation are illustrated. The maximum values of stress in the fuel rod in the stationary mode of operation are in the range of 60–80 MPa, which cannot cause depressurization of the fuel rod.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"35 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141530480","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}

{"title":"Corrosion Degradation of Long-Term Operated Steel Sewer Pipes","authors":"V. D. Makarenko, O. V. Stogniy, V. I. Gots, S. Yu. Maksymov, Yu. V. Makarenko","doi":"10.1007/s11003-024-00808-4","DOIUrl":"https://doi.org/10.1007/s11003-024-00808-4","url":null,"abstract":"<p>The results of the experimental study of the degradation of steel structures of sewer underground constructions are presented. The distribution of harmful gas elements (sulfur, hydrogen, oxygen) over the wall thickness of sewer pipes along corrosion defects in the form of pits, as well as the character of changes in the microhardness of the metal depending on the hydrogen content and service life, are shown. To confirm the metal softening with increasing hydrogen concentration, the stresses of the crystal lattice (distortion stresses) were measured.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"111 9 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141512952","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}