Protection of Metals and Physical Chemistry of Surfaces最新文献

{"title":"Alumina and Hydroxyapatite Composite Coating by Plasma Electrolytic Oxidation on Magnesium Alloy for Biomedical Implant Applications","authors":"Javeria Sajeer,&nbsp;Summaiya Khalid Khan,&nbsp;Bisma Faheem,&nbsp;Abeer Azhar,&nbsp;Eraj Humayun Mirza,&nbsp;Muhammad Rizwan,&nbsp;Madeeha Sadia,&nbsp;Syed Faraz Jawed","doi":"10.1134/S2070205125700108","DOIUrl":"10.1134/S2070205125700108","url":null,"abstract":"<p>Magnesium and its alloys have gained significant prominence as promising biomaterials for healthcare applications due to their advantageous mechanical properties, notably their compatibility with bone tissue. Despite these advantages, their rapid rate of corrosion in physiological environments remains a substantial barrier, leading to the formation of hydrogen gas and elevation of pH levels that impede the process of tissue healing. Plasma electrolytic oxidation (PEO) has emerged as an effective surface treatment to improve the corrosion resistance of magnesium as it creates a protective oxide layer. Recent studies have revealed that the incorporation of hydroxyapatite (HA) and alumina (Al₂O₃) nanoparticles into PEO coatings significantly enhances the mechanical and electrochemical properties of magnesium alloys, improving biocompatibility, corrosion resistance, and surface hardness. This research aims to investigate and optimize the corrosion resistance and mechanical performance of a HA-Al₂O₃ composite coating on AZ31 magnesium alloy, with a focus on composition, morphology, adhesion, and corrosion resistance via advanced characterization techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), and electrochemical testing. Preliminary results demonstrate significant improvements in surface hardness and corrosion resistance, highlighting the potential for this composite coating to enhance the longevity and performance of magnesium-based biomedical implants.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"61 1","pages":"174 - 181"},"PeriodicalIF":0.8,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166398","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":"The Effectiveness of Salicylidene-p-toluidine as a Corrosion Inhibitor: DFT and Experimental Investigation","authors":"S. Seridi,&nbsp;S. Almi,&nbsp;F. Adjel,&nbsp;H. Menasra,&nbsp;D. Chamseddine","doi":"10.1134/S207020512570011X","DOIUrl":"10.1134/S207020512570011X","url":null,"abstract":"<p>Salicylidene-<i>p</i>-toluidine (SPT) was evaluated in this work as a corrosion inhibitor for APl X70 carbon steel in an acidic setting at 25°C using 1M hydrochloric acid. The study was based on gravimetric analysis, electrochemical techniques and DFT (density functional theory) calculations using the 6-311G+(d,p) basis set carried out in both gas and aqueous phases. This method was employed to investigate the intrinsic properties of corrosion inhibitors and their adsorption mechanisms. The findings revealed that both the molecular structure and the concentration of the SPT, significantly affect the corrosion rate of steel. The highest value of 98.78% is reached by the inhibitory efficiency of SPT at 10^–2 M. Polarization curve shape suggests that SPT functions primarily as an anodic inhibitor.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"61 1","pages":"198 - 208"},"PeriodicalIF":0.8,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166399","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":"Fabrication and Glioblastoma Cell Interactions of Nanoporous Stainless Steel","authors":"Didem Mimiroglu","doi":"10.1134/S207020512570008X","DOIUrl":"10.1134/S207020512570008X","url":null,"abstract":"<p>Multielectrode arrays are a kind of systems which have multiple electrodes on their surfaces to record or stimulate electrical activities in biological cells or tissues. In these systems, the electrodes are typically made of gold, titanium, platinum, carbon-based materials or stainless steel (SS) etc. Among these materials, SS has corrosion resistance, conductive, ease of fabrication and low-cost properties. However, biological properties of SS remain to be improved for its use as an electrode in neuroengineering applications. To enhance its biocompatibility, cellular and tissue interactions, SS could be modified to fabricate nanofeatured topographies on their surfaces. In this study, 65 and 100 nm homogenous nanoporous structures were obtained on the 316L SS surfaces via anodization process. Results indicated that having nanoporous structures on the surfaces (T-65 and T-100) significantly increased surface area compared to NA sample. It was observed that the nanoporous 316L SS surfaces enhanced ~2-folds more glioblastoma proliferation at 5 days in vitro and ~4-folds more neurite extension for T-65 surfaces. Therefore, fabricating nanoporous structures can improve biocompatibility, bioactivity and cellular interactions of the 316L SS surfaces and can be developed as low-cost and widely available electrodes for neuroengineering applications.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"61 1","pages":"113 - 121"},"PeriodicalIF":0.8,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166451","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":"Surface Modification of Low-Carbon Steel with 4-Amino-4H-1,2,4-triazole-3,5-dithiol for Corrosion Inhibition in a 0.5 M Solution of Sulfuric Acid","authors":"M. D. Plotnikova,&nbsp;M. G. Shcherban’,&nbsp;A. B. Shein,&nbsp;K. Yu. Shumyatskaya","doi":"10.1134/S2070205124702629","DOIUrl":"10.1134/S2070205124702629","url":null,"abstract":"<p>Organic corrosion inhibitors based on heterocyclic compounds provide significant coverage of a metal surface and protect it from corrosion by adsorption. The adsorption of 4-amino-4<i>H</i>-1,2,4-triazole-3,5-dithiol (ATD) on the surface of low-carbon steel in a 1 M solution of sulfuric acid is studied by a set of physicochemical methods including polarization measurements, electric impedance spectroscopy, contact angle method, and optical microscopy. The redistribution of the components of free energy of the surface and its hydrophobization support the existence of a protective film of ATD. The calculation of the activation energy of the corrosion process based on polarization measurements shows a change in the character of adsorption with increasing temperature from mixed to chemical. It is found based on the data of electrochemical impedance spectroscopy and contact angles that multilayer filling occurs at a concentration of 100 mg/L. ATD predominantly inhibits the cathodic partial electrochemical reaction, forming adsorption layers on the energetically heterogeneous surface in accordance with the Redlich–Peterson isotherm model.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"61 1","pages":"182 - 190"},"PeriodicalIF":0.8,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166178","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":"Adsorption of Lower Alkanes CH4, C2H6, C3H8, and n-C4N10 and Their Mixtures on Highly Active Microporous Carbon Adsorbent","authors":"S. D. Artamonova,&nbsp;A. A. Pribylov,&nbsp;A. E. Grinchenko,&nbsp;A. A. Fomkin,&nbsp;I. E. Menshchikov,&nbsp;A. V. Shkolin","doi":"10.1134/S2070205124702551","DOIUrl":"10.1134/S2070205124702551","url":null,"abstract":"<p>A comparative study of the adsorption behavior of methane, ethane, propane and <i>n</i>-butane on the supermicroporous adsorbent ACW with a high micropore volume (1.44 cm³/g) and a wide distribution of pore sizes. The gas adsorption isotherms were measured by the volume–weight method at temperatures of 303, 313, 323, and 333 K in the pressure ranges of methane (0.1–40 MPa), ethane (0.01–3.8 MPa), propane (0.01–0.9 MPa), and <i>n</i>-butane (0.01–0.19 MPa). The IAST method was used to calculate the adsorption of binary mixtures CH₄/C₂H₆, CH₄/C₃H₈, and CH₄/H₁₀ with component contents of 98/2, 95/5, 92/8, and 90/10 mol %, respectively. The potential selectivity of the ACW adsorbent in adsorption gas separation processes was assessed for their further use.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"61 1","pages":"24 - 36"},"PeriodicalIF":0.8,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166180","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":"The Evolution of Surface Defects on High-Strength Cold Drawn Pearlite Steel Wire Based on Finite Element Method","authors":"Kang Xiaolong,&nbsp;Bao Siqian,&nbsp;Xue Huajuan,&nbsp;Zhu Xiaoxiong,&nbsp;Chang Jiaqi,&nbsp;Hu Jiarui,&nbsp;Liu Chen","doi":"10.1134/S2070205125700066","DOIUrl":"10.1134/S2070205125700066","url":null,"abstract":"<p>A continuous cold drawing model of high-strength cold drawn pearlite steel wire with surface defects was established using finite element method, and the variation laws of V-shaped, concave, and U-shaped defects during the drawing process were explored. In addition, the influence of shape parameters and drawing process parameters on V-shaped defects was studied, which is of great significance for reducing the formation of defects in actual production. The results indicate that V-shaped defects are more easily eliminated during repeated drawing processes, while concave defects usually cannot disappear and eventually form folding defects, seriously affecting product quality. By adjusting the parameters of defect shape and drawing process, the disappearance of V-shaped defects can be promoted. Specifically, V-shaped defects with larger defect angles and smaller defect depths are easier to eliminate, while smaller drawing die angles and larger pass compression rates increase the uniformity of strain around the defect, which is beneficial for the disappearance of V-shaped defects.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"61 1","pages":"243 - 254"},"PeriodicalIF":0.8,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166388","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":"Unveiling the Corrosion, Thermogravimetric and Intermetallic Properties of High Performing, Cu50A125Zn5Sn20 High Entropy Alloy","authors":"Ojo S. I. Fayomi,&nbsp;Samuel U. Ayuba,&nbsp;Olugbenga A. Omotosho","doi":"10.1134/S2070205125700030","DOIUrl":"10.1134/S2070205125700030","url":null,"abstract":"<p>In an attempt to improve the service life of components, Cu₅₀A1₂₅Zn₅Sn₂₀ series of high entropy alloy was fabricated liquid metallurgical route in various metal atomic distributions. The developed alloy series were subjected to various characterization performances. The corrosion test under 3.65 wt % NaCl solution was performed using linear sweep polarization method. The wear studies and microhardness response were achieved through CETR reciprocating sliding tribometer and an indenter Vickers hardness machine respectively. The Veeco technologically produced thermo-gravimetric analyzer was used for the temperature stability. The impact of the HEA structure modification was determined via scanning electron microscope (SEM) and X-ray diffractometer (XRD). From the results, it was observed that (Cu₅₀Al₃₅Zn₅Sn₁₀), (Cu₅₀Al₂₅Zn₅Sn₂₀), and (Cu₅₀Al₁₅Zn₁₀Sn₂₅) create better positive corrosion resistance response against the control sample with 0.9327 mm/year. (Cu₅₀Al₂₅Zn₅Sn₂₀) possessed more superior corrosion resistance compared to other samples, with the least CR and jcorr of 0.0423 mm/year and 4.240E–06 A/cm², respectively. The wear study also established that (Cu₅₀Al₂₅Zn₅Sn₂₀) sample possessed an exceptional counter wear response of 2.777E–06 mm³/N/m and 85.4 μm², respectively. In addition, (Cu₅₀Al₃₅Zn₅Sn₁₀) and (Cu₅₀Al₂₅Zn₅Sn₂₀) possessed the lower <i>W</i>_plast. values of 155 382.82 and 149 375.33 pJ, compared to the control sample with the highest <i>W</i>_elast., <i>W</i>_plast. and <i>W</i>_total value of 513 777.08, 1 156 098.06, and 1 669 875.14 pJ, respectively. The thermal stability of the (Cu₅₀Al₂₅Zn₅Sn₂₀) sample was observed between the temperature range of 500–690, 690–720, and 720–750°C. The structure image revealed the presence of few pores and homogeneous pattern. (Cu₅₀Al₂₅Zn₅Sn₂₀) sample was seen to have exhibited higher peak intensities and narrower peak widths with crystal phases of CuSn₂AlZn.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"61 1","pages":"131 - 145"},"PeriodicalIF":0.8,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166081","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":"Phase Equilibrium and Structure of Polyester Urethane Solutions in Multicomponent Solvents","authors":"T. A. Vorob’eva,&nbsp;V. V. Matveev,&nbsp;A. E. Chalykh","doi":"10.1134/S2070205124702605","DOIUrl":"10.1134/S2070205124702605","url":null,"abstract":"<p>Complex polyester urethanes in multicomponent solvents were used as examples for demonstrating the wide possibilities for regulating the morphology of highly-polymeric condensation structures, which were prepared with the aid of diffusional enrichment of these solutions with a nonsolvent. Dynamic light scattering was used to determine the sizes and conformation of the solution elements that determine the diversity of the resulting structures. The obtained results provided the possibility to make the conclusions about the specific features of these structures. When multicomponent solvents are used, the uncertainty of both the compositions and properties of the released phases does not yet make it possible to determine their size via this method.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"61 1","pages":"237 - 242"},"PeriodicalIF":0.8,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166387","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":"Sorption-Catalytic Increase of Rhodamine B Dye Destruction Efficiency in Barrier Discharge Plasma by Zeolite NaX and Diatomite Granules with TiO2 Coating","authors":"M. F. Butman,&nbsp;N. L. Ovchinnikov,&nbsp;N. M. Vinogradov,&nbsp;E. M. Mostova,&nbsp;G. I. Gusev,&nbsp;A. A. Gushchin,&nbsp;N. E. Gordina","doi":"10.1134/S2070205124702599","DOIUrl":"10.1134/S2070205124702599","url":null,"abstract":"<p>This paper presents the results of studies of a combined process of plasma-photocatalytic destruction of aqueous solutions of Rhodamine B (RhB) with high concentrations (up to 40 mg/L) using two composite catalytic systems consisting of titanium dioxide fixed on zeolite NaX and diatomite granules. TiO₂ coating was applied by hydrothermal impregnation of carrier with solutions containing large-sized titanium hydroxocomplexes. The sorption and photocatalytic properties of impregnated granules were studied under static conditions. Contribution of sorption-catalytic processes to the efficiency of RhB decomposition was assessed in a plasma-chemical reactor of a dielectric barrier discharge. It was shown that the presence of both types of catalysts in the plasma leads to an increase in the rate of dye destruction by at least 20%. Maximum efficiency of decomposition in plasma is observed when using a TiO₂/zeolite catalyst and reaches 100% (2 g of catalyst in a reactor volume of 25 cm³ and a discharge power of 8.6 W/cm³) with a degree of mineralization of more than 80%, which indicates a high degree of oxidation processes.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"61 1","pages":"37 - 44"},"PeriodicalIF":0.8,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166480","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":"Electrochemical Corrosion Behaviour of Electron Beam Welded Copper and SS304 Dissimilar Metal Joints in NaCl-Saturated Solution","authors":"Ajith Raj Rajendran,&nbsp;S. J. Vijay,&nbsp; Dev Anand M.,&nbsp; Anton Savio Lewise K.,&nbsp;R. S. Rimal Isaac","doi":"10.1134/S2070205125700091","DOIUrl":"10.1134/S2070205125700091","url":null,"abstract":"<p>Electron beam welding is used for high precision welds mainly in aerospace industries. It is a type of fusion welding process in which a high beam of electrons hits the metals, produce heat and melts the base metals and then solidifies to form a weldment which is generally stronger than the individual base metals. This paper presents the corrosion testing of Electron beam welded pure copper and stainless steel 304 weldment. Tafel polarization technique is used to find the electrochemical corrosion behaviour of electron beam welded copper and SS304 dissimilar metal joints in NaCl saturated solution. The experiment was carried out using a CHI electrochemical workstation with a three-electrode setup where the welded specimen act as the working electrode. Tafel plots were generated to analyze the corrosion characteristics. An active-passive transition is found that indicates the formation of a protective oxide layer. The corrosion potential (<i>E</i>_corr) and corrosion current density (<i>I</i>_corr) of the weldments proves that the weldment has superior corrosion resistance when compared with the base metals. A significant increase in oxygen content and decrease in Fe, Cr, Ni and Cu concentrations are noted in the energy dispersive X-ray analysis (EDX) which indicates the metal degradation due to electrochemical reactions. Small corrosion pits are observed during the microstructural analysis proves the presence of pitting corrosion. However, the low <i>I</i>_corr values of the weldment is very low when compared with pure copper and SS304 which shows the enhanced corrosion resistance in the weldment due to microstructural refinement and alloying effects in the fusion zone. These findings prove that Cu-SS304 dissimilar weld using EBW is suitable for aerospace applications.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"61 1","pages":"191 - 197"},"PeriodicalIF":0.8,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166179","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}