Anoop Pratap Singh, Ravi Kumar Dwivedi, Amit Suhane, Vikas Shende, Prem Kumar Chaurasiya
{"title":"Investigation of the Influence of SiO2 Nanoparticles on Tribological Performance of Conventional Lube Oil on AISI 52100 Surfaces","authors":"Anoop Pratap Singh, Ravi Kumar Dwivedi, Amit Suhane, Vikas Shende, Prem Kumar Chaurasiya","doi":"10.1134/S2070205125700157","DOIUrl":"10.1134/S2070205125700157","url":null,"abstract":"<div><p>AISI 52100, commonly referred to as bearing steel, is widely utilized in various applications where conventional lubricant oils are applied over its surface. This study delves into examining how the addition of SiO<sub>2</sub> nanoparticles influences the tribological performance of conventional lubricating oil on AISI 52100 surfaces. The tribological behavior of the nano-lubricants is assessed using a four-ball tester. Experimental results reveal a notable impact of SiO<sub>2</sub> nanoparticles in reducing the coefficient of friction (COF) and wear scar diameter (WSD) by 48.31 and 23.48%, respectively, thereby enhancing the overall tribological performance of the lubricant on AISI 52100 surfaces. These findings highlight the promising potential of integrating nanoparticles into conventional lubricating oils for advanced tribological applications.</p></div>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"61 2","pages":"331 - 337"},"PeriodicalIF":0.8,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170187","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}
Jiefang Li, Que Kong, Rong Li, Change Zhou, Dan Zhang, Zhiguang Li
{"title":"Preparation and Performance Study of Transparent Fluorine-Free Hydrophobic Coating","authors":"Jiefang Li, Que Kong, Rong Li, Change Zhou, Dan Zhang, Zhiguang Li","doi":"10.1134/S2070205125700285","DOIUrl":"10.1134/S2070205125700285","url":null,"abstract":"<p>In recent years, transparent anti-fouling coatings have attracted significant attention due to their potential applications in various fields. However, the development of multifunctional transparent anti-fouling coatings that meet practical requirements without compromising their properties remains a major challenge. This paper presents an innovative approach to address this issue by combining self-cleaning and durability through the incorporation of specific functional materials. Polydimethylsiloxane (PDMS) and methyl <i>o</i>-aminobenzoate (MA) were introduced to achieve these desired properties, respectively. Additionally, bisphenol A diglycidyl ether (BADGE) and 1,3-bis(3-aminopropyl)tetramethyldisiloxane (TMDS) were employed as coating substrates to enhance the mechanical strength of the coating. The structural composition, elemental analysis, and surface morphology of the coatings were thoroughly characterized using advanced techniques. The hydrophobicity, optical transparency, self-cleaning ability, and durability of the coatings were extensively evaluated. Experimental results demonstrated that the developed fluorine-free transparent hydrophobic coating exhibited excellent performance across multiple criteria: it showed outstanding hydrophobicity and transparency, superior self-cleaning capability, exceptional resistance to wear, water shock, and strong acid and alkali properties.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"61 2","pages":"319 - 330"},"PeriodicalIF":0.8,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170632","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}
A. Isakova, E. Abkhalimov, L. Demina, B. Spitsyn, D. Yarykin, T. Krivenko, E. Krysanov, N. Abramenko, M. Mezentcheva, I. Suetina, A. Indenbom, V. Ivanova
{"title":"Impact of Surface Modification and Size of Detonation Nanodiamond and Its Agglomerates on Embryonic Stage of Danio rerio (Zebrafish) and Madin-Darby Canine Kidney and Vero Cell Cultures","authors":"A. Isakova, E. Abkhalimov, L. Demina, B. Spitsyn, D. Yarykin, T. Krivenko, E. Krysanov, N. Abramenko, M. Mezentcheva, I. Suetina, A. Indenbom, V. Ivanova","doi":"10.1134/S2070205125700352","DOIUrl":"10.1134/S2070205125700352","url":null,"abstract":"<p>In the use of materials containing nanodiamonds, particles and their agglomerates can enter the environment and affect the development of cells of living organisms. Therefore, it was interesting to evaluate the influence of surface modification of detonation nanodiamonds on their interaction with biological objects. The detonation nanodiamonds were graphitised, chlorinated and aminated, and thoroughly investigated. The application of a complex of research methods of scanning electron microscopy SEM + EDX, IR spectroscopy, dynamic light scattering, X-ray diffractometry (XRD) allowed to reveal the peculiarities of physical chemistry of DND surface. It was found that during chlorination of DND the concentration of chlorine atoms increased from 0.05 to 6.60 wt %. Differences in the agglomeration of particles in water medium were found for the original and modified samples. The study of biological properties revealed the following. It was determined by the MTT method that DND-Cl had the most negative effect on Vero cell culture and DND-NH<sub>2</sub> had the least negative effect on Vero cell culture. At DND-NH<sub>2</sub> concentrations of 0.01 mg/mL and below, up to 75% of MDCK cells did not lose their functionality and were able to reproduce influenza A/Moscow/212/2014(H3N2) virus, and the virus titre after leaving the cells ranged from 16 to 64 HA. The range of effects of different concentrations of modified DND on the structure of <i>Danio rerio</i> fish embryos was revealed.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"61 2","pages":"338 - 354"},"PeriodicalIF":0.8,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145169214","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 Correlation between Soda’s Concentration Variation and Annealing Temperatures, Physical and Electrochemical Properties of Oxide Copper Thin Films Processed by Chemical Immersion","authors":"Youcef Aouabdia, Nadjah Sobti, Leila Amiour, Mouloud Laidoudi","doi":"10.1134/S2070205125700303","DOIUrl":"10.1134/S2070205125700303","url":null,"abstract":"<p>In this work, we have studied basically, the effect of the variation of the NaOH soda concentration, the influence of annealing temperature variation on the structural, morphological and electrochemical properties of copper oxide obtained by chemical immersion. Initially, we have obtained the nanostructures of copper oxide by chemical immersion into the electrolytes at room temperature with different concentration of NaOH: C1 (2.5 M) and C2 (0.9 M) followed by heat treatments at various temperatures. The main results were obtained by following technics X-ray diffraction (XRD), Raman spectroscopy and scanning electron microscopy (SEM) coupled with an energy-dispersive spectroscopy (EDS) analyzer, this study have shown that the decrease of NaOH concentration decreases the necessary temperature to obtain the Cu<sub>2</sub>O oxide. The increase of annealing temperature for the two studied electrolytes C1 and C2 influences the crystallinity of obtained layers as well as their microstructures. The current density responses revealed good dark current density values under the most basic conditions. The best value (58.24 mA/cm<sup>2</sup>) found from the nanostructures which obtained after immersion in the electrolyte C1 followed by treatment at 650°C for 1 h (58.24 mA/cm<sup>2</sup>) is due to the good crystallinity and to the crystallite size obtained after this annealing (<i>D</i><sub>CuO</sub> = 34.08 nm and <span>({{D}_{{{text{C}}{{{text{u}}}_{{text{2}}}}{text{O}}}}})</span> = 31.04 nm). The good result of current density has also obtained from the samples immersed in C1 then annealed at 180°C for 1 h (43.76 mA/cm<sup>2</sup>) and at 250°C for 1 h (37.87 mA/cm<sup>2</sup>) where the CuO layer is solely appeared after these annealing.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"61 2","pages":"408 - 420"},"PeriodicalIF":0.8,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170180","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}
Wang Liliang, Jia Yuxin, Luo Yuanqian, Zhu Zhiyong
{"title":"Study on the Process of Chromium-Free Chemical Conversion Coating of 7075 Aluminum Alloy","authors":"Wang Liliang, Jia Yuxin, Luo Yuanqian, Zhu Zhiyong","doi":"10.1134/S2070205125700315","DOIUrl":"10.1134/S2070205125700315","url":null,"abstract":"<p>To replace the traditional Alodine chemical conversion coating on aircraft, this paper uses potassium fluotitanate and potassium fluorozirconate as main salts, potassium permanganate as an oxidizing agent and coloring agent, acrylic acid as a complexing agent, and magnesium sulfate as a promoter to prepare a chromium-free environmentally friendly chemical conversion coating on 7075 aluminum alloy. Methods such as drop test, electrochemical analysis, electron microscopy, and elemental analysis were used to determine the optimal film-forming formula and process conditions through single-factor experiments and orthogonal experiments: 6 g/L K<sub>2</sub>TiF<sub>6</sub>, 6 g/L K<sub>2</sub>ZrF<sub>6</sub>, 4 g/L KMnO<sub>4</sub>, 10 mL/L acrylic acid, 2 g/L MgSO<sub>4</sub>; pH 3.7, temperature 35°C, film formation time 6 min. The resulting conversion film is golden yellow, with significantly improved corrosion resistance. This paper also adopts a chromium-free pre-clean instead of the traditional triacid deoxidation pre-clean, achieving chromium-free throughout the entire production process. This has significant guiding implications for future practices in environmental protection in aircraft surface treatment processes.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"61 2","pages":"448 - 455"},"PeriodicalIF":0.8,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145169218","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}
Hongling Hao, Yi-Fan Bu, Li Jiang, Chengyu He, Zexing Zhu, Yun Wu, Dan Zhang, Jiehui Li
{"title":"Viscose Fiber-Based Yarns for Aroma Enhancement","authors":"Hongling Hao, Yi-Fan Bu, Li Jiang, Chengyu He, Zexing Zhu, Yun Wu, Dan Zhang, Jiehui Li","doi":"10.1134/S2070205125700327","DOIUrl":"10.1134/S2070205125700327","url":null,"abstract":"<p>Viscose fiber, a regenerated cellulose material, has attracted significant attention for its potential in adsorption applications due to its tunable hydrophilicity, adsorption capacity, and mechanical properties. This study systematically characterizes six different yarns’ composition, physical properties, and adsorption capabilities and investigates the structure-property relationships. It confirmed the fibers’ composition and revealed distinct hydrophilic-hydrophobic variations. Mechanical testing showed 50% strength reduction in wet states compared to dry states due to water-induced disruption of hydrogen bonding. The adsorption behaviors of farnesol, a model of flavor molecule, were governed by the initial rapid surface attachment via hydrogen bonding and van der Waals forces, followed by slower intra-fiber diffusion through the amorphous regions. Temperature-dependent studies (25–45°C) demonstrated a transition from multilayer adsorption (Freundlich model) to monolayer coverage (Langmuir model) at elevated temperatures, with thermodynamic analysis confirming the endothermic nature of the process. The adsorption follows the pseudo-second-order kinetics, indicating chemisorption-dominated adsorption. These findings elucidate the fundamental mechanisms underlying viscose fiber performance and provide a scientific basis for designing advanced cellulose-based functional materials.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"61 2","pages":"291 - 300"},"PeriodicalIF":0.8,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170186","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}
Huang Zhi, Li Tianle, Yao Jian, Zhao Zhihao, Li Chunling, Liu Man, Sun Yinjuan, Shao Zhicui
{"title":"Corrosion Resistance and Hydrogen Barrier Resistance of Nano-Al2O3 Doped Amorphous Ni–P Coating","authors":"Huang Zhi, Li Tianle, Yao Jian, Zhao Zhihao, Li Chunling, Liu Man, Sun Yinjuan, Shao Zhicui","doi":"10.1134/S2070205125700340","DOIUrl":"10.1134/S2070205125700340","url":null,"abstract":"<p>Aluminum oxide (Al<sub>2</sub>O<sub>3</sub>) exhibits robust self-healing properties and chemical stability, along with superior hydrogen resistance and corrosion resistance. Additionally, it can serve as a hard particulate component in various coatings. In this study, an amorphous Ni–P coating doped with Al<sub>2</sub>O<sub>3</sub> nanoparticles was applied to a Q235 steel substrate using electrodeposition technique. The investigation focused on the influence of nano-Al<sub>2</sub>O<sub>3</sub> dosage on the properties of the Ni–P composite plating. The findings indicate that the inclusion of Al<sub>2</sub>O<sub>3</sub> nanoparticles significantly enhances the corrosion resistance, hydrogen resistance and wear resistance of the Ni–P coating. Specifically, for the Ni–P coating with the Al<sub>2</sub>O<sub>3</sub> addition of 3 g/L (Ni–P–Al<sub>2</sub>O<sub>3</sub>-3 coating), the impedance value increased by 64.4%, while the corrosion current decreased by 58.7%. Furthermore, the Ni–P–Al<sub>2</sub>O<sub>3</sub>-3 coating demonstrated an extended hydrogen penetration time and a reduction in hydrogen diffusion coefficient by an order of magnitude compared with pure Ni–P coating.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"61 2","pages":"381 - 389"},"PeriodicalIF":0.8,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170633","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":"Optimal Design of a Digital Baffled Batch Reactor for Model Fuel: Adsorption Desulfurization Based on New Adsorbent","authors":"Amer T. Nawaf, Qahtan A Mahmood, Ali A. Hassan","doi":"10.1134/S2070205125700170","DOIUrl":"10.1134/S2070205125700170","url":null,"abstract":"<p>The goal of this work was to use graphene oxide (GO) to remove sulfur compounds from simulated fuel through an adsorption desulfurization process (ADP). Graphite powder was used to generate graphene oxide in order to modify its surface area and pore volume for use in the petroleum industry. Graphene oxide was produced from graphite via modification of the Hummer process. To investigate the activity of the prepared GO-nanoparticles, we adapted the recently developed digital baffle batch reactor (DBBR) and applied it to the adsorption desulfurization process (ADP). Using an N<sub>2</sub> adsorption/desorption isotherm, Fourier- transform infrared spectroscopy (FTIR), and a scanning electron microscope (SEM), the physicochemical characteristics of graphene oxide were characterized. Investigated were the effects of three operating conditions on the removal efficiency of sulfur compounds at constant pressure and temperature: adsorbent dosage (0.4–1.2 g), speed of impeller (150–350 rpm), and contact time (35–55 min). To assess the surface modifications of adsorbents in the current process, a removal efficiency study under various operating conditions was used. The largest sulfur removal efficiency and adsorption capacity were found in the sulfur removal experiments from model fuel, which had an initial sulfur concentration of 450 ppm. The adsorption capacity was found to be 83.30% of adsorbent. At a speed of impeller 350 rpm, a contact time of 55 min, and an adsorbent dosage of 1.2 g, the highest efficiency of sulfur removal was achieved.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"61 2","pages":"270 - 276"},"PeriodicalIF":0.8,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170181","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}
Belkacem Korichi, Youcef Hadj Ali, Nacer Zazi, Hocine Aouchiche, Jean Paul Chopart
{"title":"Effects of Heterogeneous Weak Perpendicular Homogeneous Permanent Magnetic Field and Mechanical Polishing on Corrosion Behavior of the Surface of Aluminum Sand Cast Alloy AlSi10Cu(Fe) in Contact with Sand","authors":"Belkacem Korichi, Youcef Hadj Ali, Nacer Zazi, Hocine Aouchiche, Jean Paul Chopart","doi":"10.1134/S2070205125700339","DOIUrl":"10.1134/S2070205125700339","url":null,"abstract":"<p>We have analyzed the corrosion behavior of the AlSi10Cu(Fe) aluminum cast alloy of the surface in contact with sand during the casting, before and after polishing with and without perpendicular heterogeneous weak permanent magnetic field. The results obtained show that after immersion of non-polished sample generalized corrosion appears and the formation of hillocks on certain ridges of the microstructure were observed, and there is electrochemical noise only during 35 s of immersion of the sample; after that, fluctuations of stair steps take place. The polishing induces localized corrosion, pitting corrosion, and non-perfect-shape electrochemical noise until 24 h of immersion. It was observed that the application of a perpendicular homogeneous weak permanent magnetic field to the polished sample made the shape of the electrochemical noise perfect in the first 10 min, but after 24 h, the fluctuations took the form of stair steps.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"61 2","pages":"478 - 487"},"PeriodicalIF":0.8,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170184","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}
Mustafa Sabri Gök, Yılmaz Küçük, Farshıd Khosravı, Ali Günen, Mustafa Serdar Karakaş, Mustafa Güden
{"title":"A Comparative Study on Experimental and FEA-Based Simulation of Dry Sliding Wear Behavior of Boronized AISI 304 Stainless Steel at Elevated Temperatures","authors":"Mustafa Sabri Gök, Yılmaz Küçük, Farshıd Khosravı, Ali Günen, Mustafa Serdar Karakaş, Mustafa Güden","doi":"10.1134/S207020512570025X","DOIUrl":"10.1134/S207020512570025X","url":null,"abstract":"<p>In this study, the influence of boronizing on the high-temperature wear behavior of AISI 304 was examined experimentally and with FEA simulation. Boronizing, conducted at 950°C for 3 h using the powder-pack boronizing technique, showed an approximately 7-fold increase in hardness compared to untreated sample. Boride layer characterization was performed using XRD, SEM, and EDS line analyses. Wear tests were performed at ambient temperatures of 25, 250, and 500°C. While the wear rates of the untreated sample increased dramatically with increasing temperature, those of the boronized samples were significantly limited. FEA simulation using the Johnson–Cook fracture model demonstrated a high degree of consistency with the experimental wear profiles and this alignment enables reliable wear predictions. The oxide layer formation was observed on the worn surface of boronized samples during the tests at elevated temperatures, resulting in less plastic deformation.</p>","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"61 2","pages":"430 - 447"},"PeriodicalIF":0.8,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170308","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}