Materials Science最新文献_第9页

Effectiveness of Gas Nitriding of Two-Phase Titanium Alloys 两相钛合金气体氮化的效果

IF 0.9 4区材料科学

Materials Science Pub Date : 2023-12-28 DOI: 10.1007/s11003-023-00736-9

I. M. Pohrelyuk, S. M. Lavrys, V. S. Trush, A. G. Lukyanenko, T. M. Kravchyshyn

引用次数: 0

Electrochemical Properties of Plasma-Electrolytically Oxidized Aluminum Coatings Sprayed on MA5 Magnesium Alloy 喷涂在 MA5 镁合金上的等离子电解氧化铝涂层的电化学特性

IF 0.9 4区材料科学

Materials Science Pub Date : 2023-12-28 DOI: 10.1007/s11003-023-00742-x

{"title":"Electrochemical Properties of Plasma-Electrolytically Oxidized Aluminum Coatings Sprayed on MA5 Magnesium Alloy","authors":"","doi":"10.1007/s11003-023-00742-x","DOIUrl":"https://doi.org/10.1007/s11003-023-00742-x","url":null,"abstract":"The aluminum-based coating was sprayed onto a substrate made of MA5 magnesium alloy by detonation and thermal vacuum methods. Potentiodynamic polarization studies were carried out to evaluate corrosion resistance of the modified surfaces. Thermal vacuum coating is non-porous, but thin (approx. 50 μm). The plasma-electrolytic oxidation (PEO) layer of the aluminum coating almost does not interact with the magnesium base during the process of synthesizing the oxide ceramic coating. The corrosion resistance of the detonation coating was twice as high as that of the MA5 magnesium alloy, but the layer synthesized on the PEO coating neutralized this effect. This is related with the growth of the PEO layer through the sprayed coating (thickness approx. 200 μm) to the base and the presence of through pores in it, which over time causes the spalling of such a combined coating. The opposite electrochemical picture is observed on the surface of the thermal vacuum sprayed coating without and with the presence of the PEO layer on it. Here the corrosion currents are lower in 25 times and by 2 orders of magnitude, respectively. Such a significant difference in the corrosion resistance of aluminum coatings is caused by their porosity and structural defects due to the peculiarities of the technological process.","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"20 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139069575","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}

引用次数: 0

Local Frictional Wear of an Elastic Half-Space with a Regular System of Protrusions 带有规则突起系统的弹性半空间的局部摩擦磨损

IF 0.9 4区材料科学

Materials Science Pub Date : 2023-12-27 DOI: 10.1007/s11003-023-00752-9

O. P. Kozachok

引用次数: 0

Inhibition of Steel Microbial Corrosion by Quaternary Salts of Imidazoquinolinium 咪唑喹啉季胺盐对钢铁微生物腐蚀的抑制作用

IF 0.9 4区材料科学

Materials Science Pub Date : 2023-12-27 DOI: 10.1007/s11003-023-00748-5

N. R. Demchenko, S. V. Trachenko, O. S. Bondar

{"title":"Inhibition of Steel Microbial Corrosion by Quaternary Salts of Imidazoquinolinium","authors":"N. R. Demchenko, S. V. Trachenko, O. S. Bondar","doi":"10.1007/s11003-023-00748-5","DOIUrl":"https://doi.org/10.1007/s11003-023-00748-5","url":null,"abstract":"The 2.3-diaryl-4.5-dihydro-imidazo[1.2-a]quinolinium-3 bromides were tested as biocides and inhibitors of microbial corrosion of low-carbon steel induced by bacteria of Desulfovibrio sp. M-4.1 strain. The degree of metal protection against corrosion induced by sulfate-reducing Desulfovibrio sp. M-4.1 bacteria was 84.6–92.4%. 2-(para-tolyl)-3-(41-methoxyphenyl)-4.5-dihydro-imidazo[1.2-a]quinolinium bromide demonstrated the best protective effect. It was established that sulphate-reducing bacteria of Desulfovibrio sp. M-4.1 strain were sensitive to 2.3-diaryl-4.5-dihydro-imidazo[1.2-a]quinolinium-3 bromides. Under the influence of imidazoquinolinium quaternary salts, the inhibition zones of bacterial growth have the diameters of 24.7–45.5 mm. Quaternary salts of imidazoquinolinium completely suppress the growth of sulfate-reducing Desulfovibrio sp. M-4.1 bacteria in plankton and significantly influence the formation of biofilm (the number of cells decreases by 6–8 orders compared to the control sample) under conditions of microbial corrosion. Suppression of the sulfate-reducing activity of Desulfovibrio sp. M-4.1 bacteria by quaternary salts of imidazoquinolinium (by 88.8–91.6%) was proven. The effectiveness of the quaternary salts was discussed with the account of molecular descriptors.","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"7 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139057868","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}

引用次数: 0

Corrosion Resistance of Eutectic Al–Mg–Ge Alloys 共晶铝-镁-锗合金的抗腐蚀性能

IF 0.9 4区材料科学

Materials Science Pub Date : 2023-12-27 DOI: 10.1007/s11003-023-00744-9

L. G. Shcherbakova, N. P. Korzhova, T. M. Legka, A. V. Sameluk, I. V. Voskoboinik, V. Kh. Melnyk

引用次数: 0

Corrosion Resistance of Dysprosium Titanate Powders and Pellets in the Model Environment of the WWER-1000 Coolant 钛酸镝粉末和颗粒在 WWER-1000 冷却剂模型环境中的抗腐蚀性能

IF 0.9 4区材料科学

Materials Science Pub Date : 2023-12-27 DOI: 10.1007/s11003-023-00749-4

引用次数: 0

Use of Corrosion Control Device to Control Reagent Water Treatment of Heating Networks 使用腐蚀控制装置控制供热管网的试剂水处理

IF 0.9 4区材料科学

Materials Science Pub Date : 2023-12-27 DOI: 10.1007/s11003-023-00745-8

G. S. Vasyliev, Yu. S. Herasymenko

引用次数: 0

The Influence of the Deformation and Heat Treatment on the Structure and Heat-Resistance of Ti–Al–Zr–Si Alloys 变形和热处理对 Ti-Al-Zr-Si 合金结构和耐热性的影响

IF 0.9 4区材料科学

Materials Science Pub Date : 2023-12-27 DOI: 10.1007/s11003-023-00741-y

O. M. Shevchenko, L. D. Kulak, M. M. Kuzmenko, O. Yu. Koval, A. V. Kotko, I. F. Kravchenko, S. O. Firstov

{"title":"The Influence of the Deformation and Heat Treatment on the Structure and Heat-Resistance of Ti–Al–Zr–Si Alloys","authors":"O. M. Shevchenko, L. D. Kulak, M. M. Kuzmenko, O. Yu. Koval, A. V. Kotko, I. F. Kravchenko, S. O. Firstov","doi":"10.1007/s11003-023-00741-y","DOIUrl":"https://doi.org/10.1007/s11003-023-00741-y","url":null,"abstract":"The heat-resistant Ti–Al–Zr–Si alloys (base Ti–(6–7)Al–(2–3) Zr–(1–1.5)Si and additionally alloyed Ti–(6–7)Al–(3–5)Zr–(1–1.5)Si–(2–4)Sn), obtained by electron beam smelting were studied. Deformation was carried out in the β- or upper part of the (α+β)-area by means of forging and rolling into a strip. The base alloy was subjected to rolling in the upper part of the α+β-area, and the fine-grained uniform structure with a grain size of 10–20 μm was obtained. Internal stresses and defective substructure of the deformed alloy intensify the decomposition of the solid solution and promote the formation of evenly distributed dispersed silicides, which allows obtaining high strength and heat resistance characteristics. Tensile tests at 20; 650 and 700°C of the Ti–(6–7)Al–(2–3)Zr–(1–1.5)Si alloy samples after deformation and annealing also showed a rather high level of the tensile strength and yield strength. After 20 h exposure at the operating temperature of 700°C, the structure becomes more equilibrium, due to which the strength of the deformed alloy decreases, and the relative elongation increases. Additional alloying of the base alloy with zirconium and tin slightly increases plasticity and decreases heat-resistant properties.","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"64 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139055138","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}

引用次数: 0

Characteristics of the Quality of Deposited Parts Treatment 沉积部件处理质量的特点

IF 0.9 4区材料科学

Materials Science Pub Date : 2023-12-27 DOI: 10.1007/s11003-023-00739-6

V. V. Kolomiyets, R. V. Antoshchenko, V. M. Lykyanenko, R. V. Ridnyi, S. O. Kharchenko, I. A. Fabrychnikova, S. A. Bogdanovych, O. A. Svirhun

引用次数: 0

The Influence of Surface-Active Elements on Grains Boundary Structure and Resistance Against Intergranular Corrosion of Austenitic Cr–Ni and Cr–Ni–Mo Steels 表面活性元素对奥氏体铬镍钢和铬镍钼钢晶界结构和抗晶间腐蚀性能的影响

IF 0.9 4区材料科学

Materials Science Pub Date : 2023-12-27 DOI: 10.1007/s11003-023-00743-w

T. O. Dergach, G. D. Sukhomlin, L. M. Deyneko, Z.-H. Jiang, J. Tian

{"title":"The Influence of Surface-Active Elements on Grains Boundary Structure and Resistance Against Intergranular Corrosion of Austenitic Cr–Ni and Cr–Ni–Mo Steels","authors":"T. O. Dergach, G. D. Sukhomlin, L. M. Deyneko, Z.-H. Jiang, J. Tian","doi":"10.1007/s11003-023-00743-w","DOIUrl":"https://doi.org/10.1007/s11003-023-00743-w","url":null,"abstract":"The maximum permissiblse content of surface-active elements of carbon, nitrogen and boron in low-carbon Cr–Ni and Cr–Ni–Mo steels, which provide high resistance against intergranular corrosion (IGC) when tested in strongly and weakly oxidizing environments, was established. To ensure high resistance against IGC when tested in boiling 65% HNO3 (according to ISO 3651-1), the carbon content in 03Kh18N11 (304L) and 03Kh17N14M3 (316L) steels should not exceed 0.025% and 0.015%, respectively, and when tested in boiling H2SO4 (ISO 3651-2, method B) should not exceed 0.03%. The nitrogen amount up to 0.2% does not influence negatively the IGC of the studied steels, and the simultaneous increase of nitrogen and carbon gives a negative synergistic effect. The negative influence of 0.003% and, to a greater extent, 0.03% boron on the grain boundary structure and resistance against IGC of steels hardened at temperatures >1100°C was shown. Technologies for increasing the resistance against IGC of pipes made of the studied steels were developed, taking into account the principle of grain boundary engineering of polycrystalline materials.","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"13 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139055379","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}

引用次数: 0