Protection of Metals and Physical Chemistry of Surfaces最新文献

{"title":"Growth Kinetics of Boronized Layers and the Diffusion Zone in the Iron-Based A286 Superalloy with the Taylor Expansion Model","authors":"Mourad Keddam,&nbsp;Nait Abdellah Zahra,&nbsp;Brahim Boumaali,&nbsp;Peter Jurči","doi":"10.1134/S2070205124702460","DOIUrl":"10.1134/S2070205124702460","url":null,"abstract":"<p>This work addresses the modelling of growth kinetics for FeB, Fe₂B, and the diffusion zone formed after the solid boriding of the iron-based A286 superalloy. A novel kinetic model was developed to analyze the boron diffusion in this multi-layer system, with a non-linear boron distribution in each phase. The boron concentration profile within each phase was expressed as a function expanded in a second-order Taylor series. Subsequently, the proposed model was used to assess the boron diffusion coefficients in the FeB and Fe₂B layers, as well as in the diffusion zone (DZ), using experimental data from the literature. As a result, the boron activation energies in the FeB, Fe₂B, and DZ layers were determined to be 176.69, 201.05, and 207.80 kJ mol^–1, respectively. Additionally, the experimentally measured layer thicknesses were compared with the predicted values, validating the developed model.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"60 6","pages":"1104 - 1112"},"PeriodicalIF":1.1,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698566","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":"Synthesis and Characterization of New Schiff Base Derivatives from Quinazolinone Moiety and Studying Their Properties as Potential Corrosion Inhibitors","authors":"Mohammed G. A. Al-Khuzaie,&nbsp;Shahad F. Ali,&nbsp;Saja Sabbood,&nbsp;Suaad M. H. Al-Majidi,&nbsp;Munaf S. Majeed","doi":"10.1134/S2070205124702423","DOIUrl":"10.1134/S2070205124702423","url":null,"abstract":"<p>A new series of Schiff base derivatives of quinazoline core were synthesized through the reaction of quinazoline derivative <b>A</b> with different substituted aromatic aldehydes to produce compounds <b>1–4</b>. The new Schiff base derivatives <b>1–4</b> were obtained in high yields and characterized using various techniques including FTIR, ¹H‑NMR, and ¹³C-NMR. Compounds <b>1–4</b> were studied as corrosion inhibitors for carbon steel 45 using polarization curves. Various thermal and kinetic parameters were also examined to better understand the corrosion process and inhibition mechanism of these compounds. All compounds demonstrated excellent corrosion inhibition properties, and the results were corroborated by X-ray diffraction and AFM techniques.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"60 6","pages":"1173 - 1182"},"PeriodicalIF":1.1,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698572","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":"Study of MgO-Incorporated Acrylic Emulsion-Based Coating for Antimicrobial Application","authors":"Awanish Singh,&nbsp; Priti,&nbsp;Radha Sachan","doi":"10.1134/S2070205124702526","DOIUrl":"10.1134/S2070205124702526","url":null,"abstract":"<p>In this study, acrylic emulsion was made using the emulsion polymerization technique with butyl acrylate (BA) and methyl meth acrylate (MMA) monomers. MMA provides rigidity and durability, while BA imparts flexibility to the polymer. To enhance its antibacterial capabilities, the acrylic emulsion was polymerized in-situ using 1.5% (relative to the monomers) magnesium oxide (MgO) nanoparticles. In-situ polymerization helps in the uniform dispersion of nanoparticles within the polymer matrix, enhancing the properties of the final product. The synthesised acrylic emulsion was evaluated using Fourier-transform infrared (FTIR) spectroscopy to determine its structural characteristics, an <i>E. coli</i> test to determine its antibacterial qualities and a Brookfield viscometer to determine its viscosity. The prepared acrylic emulsions were applied as a coating on mild steel (MS) panels and tested for its adherence, gloss, drying time, and flexibility. The study demonstrates that MgO nanoparticles can effectively enhance the antimicrobial properties of acrylic emulsions without compromising other essential coating properties like gloss, adhesion, and flexibility, making them suitable for protective coatings in various applications.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"60 6","pages":"1069 - 1076"},"PeriodicalIF":1.1,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698453","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 of Centrifuged Hot Dip Galvanized Pad Hooks Used in GFRC Panels","authors":"Husnu Gerengi,&nbsp;Muhammed Maraşlı,&nbsp;Moses M. Solomon,&nbsp;Kader Coskun,&nbsp;Yusuf Guner","doi":"10.1134/S2070205124702459","DOIUrl":"10.1134/S2070205124702459","url":null,"abstract":"<p>Anchor elements and pad hooks are necessary components for securing GFRC panels to the main building structure, but they are vulnerable to corrosion when exposed to the atmosphere. This study evaluated the corrosion resistance of two centrifuged hot-dip pad hooks (designated A1 and B1) in a 5% (w/v) NaCl solution. The samples were subjected to a 20-day salt spray test and observed visually and through SEM-EDX for elemental composition. The thickness of the surface coating was measured before and after the salt spray test. The visual observation and SEM images indicate that the pad hook samples remained corrosion-free in the studied environment as the brownish iron oxides were not observed. The surface products were mainly Zn-rich corrosion products. The average thickness of samples A1 and B1 before the corrosion test was found to be 78.15 and 145.65 µm. After the corrosion test, the thickness increased to 100.98 and 191.74 µm for samples A1 and B1, respectively. The EDX results, however, revealed that both samples were corroded when exposed to the corrosive medium but B1 had a superior resistance than A1. It is therefore recommended to improve the production processes to focus on surface pre-treatment and Zn coating thickness for improved corrosion resistance.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"60 6","pages":"1113 - 1119"},"PeriodicalIF":1.1,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698565","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":"On the Use of Positron Flaw Detection in Monitoring the Atomic-Electronic and Defect Structure of Deformed Metal Mixtures","authors":"I. I. Bardyshev,&nbsp;V. A. Kotenev","doi":"10.1134/S2070205124702575","DOIUrl":"10.1134/S2070205124702575","url":null,"abstract":"<p>This article considers methodological issues of applying positron annihilation (PA) spectroscopy in monitoring the atomic-electronic and defect structure of deformed metallic mixtures. This method, like many other complex methods for determining the atomic-electronic structure, structure and characteristics of defects, requires specialists not only to carry out the measurements themselves, but also to analyze the initial experimental data. On the other hand, to understand the results of annihilation spectroscopy and their significance in terms of material properties, no special training is required, except for several basic concepts that are presented in this paper. This paper describes the method using the example of studying the atomic-electronic properties of heavily deformed mixtures of aluminum and copper powders. It is shown that the positron annihilation method is extremely sensitive to the vacancy composition of deformed powders associated with their chemical activity.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"60 6","pages":"1167 - 1172"},"PeriodicalIF":1.1,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698571","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 Relaxation Behavior of Latex Acrylate Polymers. 2. The Interrelationship between Physicochemical and Physicomechanical Properties of Polymers","authors":"T. R. Aslamazova,&nbsp;V. A. Kotenev,&nbsp;V. A. Lomovskoi","doi":"10.1134/S2070205124702563","DOIUrl":"10.1134/S2070205124702563","url":null,"abstract":"<p>The review is devoted to the generalization of results of research on the relaxation behavior of latex acrylic resins polymers used as a binder in composite coatings on surfaces of various chemical nature, structure, and composition with the aim of identifying the temperature regions of realization of their elastic and inelastic (dissipative) properties at temperatures from –150 to +200°C established using the method of dynamic relaxation spectroscopy. In the second section, an analysis of experimental data on the spectra of internal friction and temperature–frequency dependences of the oscillatory process of latex polyacrylates was carried out to demonstrate the relationship between their physicochemical and physicomechanical properties of the polymer.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"60 6","pages":"1147 - 1166"},"PeriodicalIF":1.1,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698570","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 Ethane (С2Н6) onto a La–BTC Microporous Metal–Organic Framework Structure at High Pressures","authors":"A. A. Pribylov,&nbsp;A. E. Grinchenko,&nbsp;A. A. Fomkin,&nbsp;A. V. Shkolin,&nbsp;I. E. Men’shchikov","doi":"10.1134/S2070205124702630","DOIUrl":"10.1134/S2070205124702630","url":null,"abstract":"<p>The absolute adsorption of ethane onto a La–BTC metal–organic framework (MOF) structure, which was prepared using such a rare metal as lanthanum, was examined within a pressure range of 0.1–4 MPa at temperatures of 303.0, 313.0, 323.0, and 333.0 K. As follows from the experimental data on the adsorption of С₂Н₆ onto a La–BTC MOF obtained in the present study<i>,</i> the adsorption isotherms are reversible, and the amount of adsorbed molecules increased with pressure and decreased with rising temperature. The isosteres of adsorption plotted in coordinates ln<i>P = f</i>(1/<i>T</i>) at constant adsorption values are well described by linear functions at all pore fillings. The dependences of isosteric differential molar heats of ethane adsorption onto a La–BTC MOF on the value of adsorption were calculated for the studied range of temperatures. It was shown that the La–BTC MOF is a microporous adsorbent and can be employed for extracting ethane from natural gas.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"60 6","pages":"1077 - 1083"},"PeriodicalIF":1.1,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698454","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":"Investigating the Treatment of Transition Metals for Ameliorating the Ability of Boron Nitride for Gas Sensing & Removing: A Molecular Characterization by DFT Framework","authors":"Fatemeh Mollaamin","doi":"10.1134/S2070205124702502","DOIUrl":"10.1134/S2070205124702502","url":null,"abstract":"<p>The electronic, magnetic and thermodynamic properties of adsorption of toxic gases including NO molecules by using transition metals of <i>X</i> (<i>X</i> = Sc, V, Cr, Co, Cu, Zn)-doped boron nitride nanocage (B₅N₁₀_NC) have been investigated using density functional theory. The results denote that NO@<i>X</i>–B₄N₁₀_NC are stable compounds, with the most stable adsorption site being the center of the cage ring. The partial density of states (PDOS) can evaluate a determined charge assembly between gas molecules and <i>X</i>–B₄N₁₀_NC which indicates the competition among dominant complexes of Sc, V, Cr, Co, Cu, Zn. Based on NQR analysis, <i>X</i>-doped on B₅N₁₀_NC has shown the lowest fluctuation in electric potential and the highest negative atomic charge including 0.3710 C (copper), 0.5970 C (chromium), 0.7392 C (vanadium), 0.7768 C (zinc) and 0.8259 C (scandium), respectively, have presented the most tendency for being the electron acceptors. Furthermore, the reported results of NMR spectroscopy have exhibited that the yield of electron accepting for doping atoms on the <i>X</i>–B₄N₁₀_NC through gas molecules adsorption can be ordered as: Co ≈ Cr &gt; Cu &gt; Zn &gt; V ≈ SC that exhibits the strength of covalent bond between scandium, vanadium, chromium, cobalt, copper, zinc and NO towards toxic gas removal from air. In fact, the adsorption of NO gas molecules can introduce spin polarization on the <i>X</i>–B₄N₁₀_NC which specifies that these surfaces may be employed as magnetic scavenging surface as a gas detector. Regarding IR spectroscopy, doped nanocages of Sc–B₄N₁₀_NC, V–B₄N₁₀_NC, Cr–B₄N₁₀_NC, Co–B₄N₁₀_NC, Cu–B₄N₁₀_NC and Zn–B₄N₁₀_NC, respectively, have the most fluctuations and the highest adsorption tendency for gas molecules which can address specific questions on the individual effect of charge carriers (gas molecule-nanocage), as well as doping atoms on the overall structure. Based on the results of <span>(Delta G_{{text{R}}}^{^circ })</span> amounts in this research, the maximum efficiency of Sc, V, Cr, Co, Cu, Zn atoms doping of B₅N₁₀_NC for gas molecules adsorption depends on the covalent bond between NO molecules and <i>X</i>–B₄N₁₀_NC as a potent sensor for air pollution removal. Finally, high selectivity of atom-doped on boron nitride nanocage (gas sensor) for gas molecules adsorption has been resulted as: Cu <span>( gg )</span> Co &gt; Cr &gt; V &gt; Zn &gt; Sc.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"60 6","pages":"1050 - 1063"},"PeriodicalIF":1.1,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698459","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":"Effects of Prior Chemical Treatment in a Nitric Acid, and a Weak Perpendicular to the Surface Heterogeneous Magnetic Field on the Corrosion behavior of AISI 316L Austenitic Stainless Steel, Intended for Use as an Implant, in Chloride Solution","authors":"Djedjiga Ben Abdesselam,&nbsp;Nacer Zazi,&nbsp;Fatah Hellal,&nbsp;Mărioara Abrudeanu,&nbsp;Denis Negrea,&nbsp;Jean Paul Chopart","doi":"10.1134/S2070205124702435","DOIUrl":"10.1134/S2070205124702435","url":null,"abstract":"<p>Prior chemical treatment in an aerated 65 wt % nitric acid solution (PCTNA), and weak permanent heterogeneous magnetic fields perpendicular to the surface WPHMFP effects on corrosion behavior of AISI 316L alloy in immersion in 0.9 wt % NaCl containing 0.1wt % glucose solution, proposed to use as an implant, have been studied. A PCTNA coupled with reduces localized corrosion during the immersion in a chloride solution. A PCTNA induces the formation of Al₂O₃ and SiO₂ oxides on the surface in absence of magnetic field and Al₂O₃ containing nitrogen in presence of WPHMFP. The corrosion in the presence WPHMFP during the rest potential and current–potential test increases the rest potential, and cancels the electrochemical noise (EN) on the rest potential curve during the first 4 h of immersion in nitric acid solution, withdraws the EN in anodic domain of polarization curves, remove the intergranular corrosion observed after polarization test following the first hour of immersion, and reduces the localized corrosion. The WPHMFP effects are almost removed after 3 days of immersion in nitric acid solution. The corrosion in chloride solution, after chemical treatment in the presence or in the absence of magnetic field, and the corrosion in a chloride solution in presence of magnetic field and without prior chemical treatment induce AgCl deposition on the surface of AISI 316L alloy after its dissolution from the Ag/AgCl reference electrode.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"60 6","pages":"1183 - 1199"},"PeriodicalIF":1.1,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698662","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":"Relaxation Behavior of Latex Acrylate Polymers. 1. The Effect of Polymerization Factors. 1.2. Statistical and Seed Polymers","authors":"T. R. Aslamazova,&nbsp;V. A. Kotenev,&nbsp;V. A. Lomovskoi","doi":"10.1134/S2070205124702332","DOIUrl":"10.1134/S2070205124702332","url":null,"abstract":"<p>Chemical structures and relaxation behavior of polyacrylates synthesized using statistical and seed emulsion copolymerization methods were compared, taking into account their relaxation behavior in the glass-transition temperature range and at negative temperatures in the range from –150 to 0°C. To clarify the difference in the relaxation structures of both polymers, the effect of a water-soluble modifier on the main and local dissipative processes is considered. The relaxation microuniformity of the statistical and seed polymers is determined, taking into account also the effect of the modifier on the spectrum of internal friction of latex polymers of various polymerization structures. A theoretical approach to the assessment of the relaxation microuniformity of latex polymers is proposed based on the choice of a function for describing the dissipative processes occurring in latex polymers and its correlation with experimental data.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"60 5","pages":"866 - 881"},"PeriodicalIF":1.1,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143581219","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}