Protection of Metals and Physical Chemistry of Surfaces最新文献_第5页

Corrosion and Wear Enhancement of Composite Layers over PEO-Coated Mg Alloys: A Review

IF 1.1 4区材料科学

Protection of Metals and Physical Chemistry of Surfaces Pub Date : 2025-02-18 DOI: 10.1134/S2070205124701995

M. Madhu, S. Manivannan, D. Sreekanth, P Sajeesh

{"title":"Corrosion and Wear Enhancement of Composite Layers over PEO-Coated Mg Alloys: A Review","authors":"M. Madhu, S. Manivannan, D. Sreekanth, P Sajeesh","doi":"10.1134/S2070205124701995","DOIUrl":"10.1134/S2070205124701995","url":null,"abstract":"Magnesium alloys have garnered significant gained attention in the scientific community due to their low density, superior damping capacity, impressive strength-to-weight ratio, and recyclability. The biocompatible Mg alloys attracted the researchers to use them as permanent implants in the body. But Mg alloys were positioned low in the electromotive series, have a high affinity for corrosion, and will be degraded in the presence of corrosive anions. Surface modification methods could be adopted to protect the Mg surface from corrosive environments. Among various surface treatment processes, plasma electrolytic oxidation (PEO) process is environmentally friendly for providing a robust anti-corrosion and wear-resistant coating on the Mg alloys. Presence of the pores and cracks on the PEO surfaces reduced the corrosion and wear resistance of the alloys. Surface morphology, corrosion and wear characteristics of the PEO-coated Mg surfaces can be improved by various composite coatings. The mechanisms of corrosion inhibition, wear characteristics, wetting characteristics, biofunctionality and finally the degradation of various composite coatings over Mg‑PEO surfaces in the presence of corrosive environments are elaborated in this review paper.","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"60 4","pages":"708 - 722"},"PeriodicalIF":1.1,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438629","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

Molecular Analysis of the Disjoining Pressure Concept in Two-Phase Porous Systems

IF 1.1 4区材料科学

Protection of Metals and Physical Chemistry of Surfaces Pub Date : 2025-02-18 DOI: 10.1134/S2070205124702095

E. S. Zaitseva, Yu. K. Tovbin

{"title":"Molecular Analysis of the Disjoining Pressure Concept in Two-Phase Porous Systems","authors":"E. S. Zaitseva, Yu. K. Tovbin","doi":"10.1134/S2070205124702095","DOIUrl":"10.1134/S2070205124702095","url":null,"abstract":"A molecular analysis of two-phase distributions within slit-shaped and cylindrical pores with homogeneous walls has been conducted across a wide range of pressures and temperatures, where both liquid and vapor phases coexist. The pore walls are assumed to be nondeformable, acting as an external field for the fluid. The equilibrium states of both phases—“liquid in pore” and “vapor in pore”—satisfy the equality of their chemical potentials with that of the bulk phase and with each other. Molecular distributions were calculated using the lattice gas model (LGM) with a simplified nearest-neighbor pairwise interaction potential. The distribution of molecular density within the inhomogeneous field of the pore walls is associated with two types of pressure: isothermal pressure, linked to the system’s chemical potential, and internal mechanical pressure (or expansion pressure in LGM terminology). The difference between each of these pressures and the corresponding pressure in the bulk phase defines the disjoining pressure. This parameter is widely employed in the thermodynamic interpretation of thin film properties as a function of film thickness. The theory accounts for the effects of the adsorbent–adsorbate interaction potential and its range, deviations in pore geometry from the ideal slit-shaped form, and temperature on the values of disjoining pressure. The molecular theory based on the LGM framework provides a thermodynamic analysis of disjoining pressure as a characteristic of confined systems, distinguishing them from macroscopic systems. It is demonstrated that the concept of disjoining pressure in two-phase systems can be extended to all fluid densities, ranging from vapor to liquid, and to any pore geometry.","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"60 4","pages":"571 - 584"},"PeriodicalIF":1.1,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438655","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

Physical Investigations on Mn3O4/ITO thin Film for Optoelectronic Applications

IF 1.1 4区材料科学

Protection of Metals and Physical Chemistry of Surfaces Pub Date : 2025-02-18 DOI: 10.1134/S2070205124702009

A. Mhamdi, B. Ouni

引用次数: 0

Sorption of Heavy Metal Ions by the “Cellulose–Carbon Nanotubes” Biocomposite

IF 1.1 4区材料科学

Protection of Metals and Physical Chemistry of Surfaces Pub Date : 2025-02-18 DOI: 10.1134/S2070205124702125

T. E. Nikiforova, D. A. Vokurova

{"title":"Sorption of Heavy Metal Ions by the “Cellulose–Carbon Nanotubes” Biocomposite","authors":"T. E. Nikiforova, D. A. Vokurova","doi":"10.1134/S2070205124702125","DOIUrl":"10.1134/S2070205124702125","url":null,"abstract":"This paper presents the development of a composite sorbent based on cellulose and carbon nanotubes and its sorption properties towards Cu(II) ions. Carbon nanotubes were sequentially modified with concentrated sulfuric acid, thionyl chloride, and ethylenediamine, and subsequently attached to cellulose pretreated with citric acid. The formation of new functional groups on the surface of the composite cellulose sorbent was confirmed through FTIR spectroscopy. Scanning electron microscopy revealed differences in the surface structure of cellulose-based sorbents before and after modification. The kinetics and equilibrium of Cu(II) ion sorption were investigated in a heterogeneous “aqueous solution–modified sorbent” system. The kinetic data were more accurately described using the pseudo-second-order kinetic model. Analysis of sorption isotherms using the Langmuir equation allowed determination of the maximum sorption capacity of the original sorbent and its composite derivative. It was found that the sorption capacity of the composite sorbent is approximately six times greater than that of unmodified cellulose.","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"60 4","pages":"618 - 625"},"PeriodicalIF":1.1,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438628","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

The Wear-Resistant Self-Cleaning Interface Prepared Through Spraying Method

IF 1.1 4区材料科学

Protection of Metals and Physical Chemistry of Surfaces Pub Date : 2025-02-18 DOI: 10.1134/S2070205124701971

Jiefang Li, Yunge Hao, Que Kong, Dan Zhang, Zhiguang Li

引用次数: 0

Effects of Al2O3 Particles on Corrosion Behavior and Microstructure of Al–Al2O3 Composites and Texture of Aluminum Matrix

IF 1.1 4区材料科学

Protection of Metals and Physical Chemistry of Surfaces Pub Date : 2025-02-18 DOI: 10.1134/S207020512470196X

Sabrina Dehrib, Nacer Zazi, Hülya Durmus

{"title":"Effects of Al2O3 Particles on Corrosion Behavior and Microstructure of Al–Al2O3 Composites and Texture of Aluminum Matrix","authors":"Sabrina Dehrib, Nacer Zazi, Hülya Durmus","doi":"10.1134/S207020512470196X","DOIUrl":"10.1134/S207020512470196X","url":null,"abstract":"In this paper, we studied the influence of alumina particles addition, 5, 10, and 15 wt %, on the microstructure after elaboration of Al–Al2O3 MMC composite, morphology and kinetic of corrosion, hardness, texture evolution of aluminum matrix. The results show distribution of alumina particles in shape of petal-like phase in some zones , in form of flack in another region for sample with 5% addition alumina, and in mixture between truncated petal-like phase and flake form particles for the sample with 10% addition of alumina, of flake in zone 1 one and a mixture of petal-like phase and flake in zone 2 for the sample with 15% addition of Al2O3, the samples with 5 and 10% Al2O3 were undergo generalized corrosion almost in the all surfaces, but for the sample with 15% addition of was undergo the corrosion which don’t tends to generalized corrosion. The corrosion resistance increase when the Al2O3 addition increases. The texture of aluminum changes slightly when the alumina powders are added to aluminum. The hardness change when alumina powders are added to aluminum.","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"60 4","pages":"685 - 695"},"PeriodicalIF":1.1,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438614","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

Gas Permeability of Polymer/2D-Nanofiller Nanocomposites: Structural Interpretation and Nanoeffects

IF 1.1 4区材料科学

Protection of Metals and Physical Chemistry of Surfaces Pub Date : 2025-02-18 DOI: 10.1134/S2070205124702101

G. V. Kozlov, I. V. Dolbin

引用次数: 0

Analysis of Structural Transformations and Water State in a Microfiltration Polyamide Membrane

IF 1.1 4区材料科学

Protection of Metals and Physical Chemistry of Surfaces Pub Date : 2025-02-18 DOI: 10.1134/S2070205124702113

S. I. Lazarev, Yu. M. Golovin, D. N. Konovalov, E. Yu. Yanovskaya, D. S. Lazarev

{"title":"Analysis of Structural Transformations and Water State in a Microfiltration Polyamide Membrane","authors":"S. I. Lazarev, Yu. M. Golovin, D. N. Konovalov, E. Yu. Yanovskaya, D. S. Lazarev","doi":"10.1134/S2070205124702113","DOIUrl":"10.1134/S2070205124702113","url":null,"abstract":"The paper presents the results of studies of structural transformations and the state of water in samples of MMK-045 nonworking, water-saturated, and working membranes using the methods of IR spectroscopy NTR and X-ray phase analysis. Three types of hydrogen bonds have been identified: (‒CO…H2O…CO–) (III) type ~30 kJ/mol, H2O…HN (II) type ~16 kJ/mol, and (I) type ~9 kJ/mol. Sorption water in a water-saturated sample, reducing the energy of intermolecular (NH…O=C) bonds, changes the configuration of PA6 macromolecules without changing the trans-conformers. At the same time, FTIR spectrum of the working membrane sample (absence of absorption band at 1478 cm–1) shows breaking of H‑bonds, accompanying changes in the configurations of molecules with increasing gauche conformers. Manifestation of a complex absorption band at ~1723 and 1737 cm–1, attributed to terminal carboxyl groups (COOH), indicates the destruction of PA6 macromolecules. Disappearance of the absorption band at ~3089 cm–1 for the first time experimentally confirms the connection between the Fermi resonance phenomenon in polymer molecules and the destruction of PA6 macromolecules to elementary structural units. X-ray studies indicate structural changes mainly at the supramolecular level in MMK-045 membrane samples. In a water-saturated sample, the density of molecules in the amorphous phase increases (2θ = 26.4°), and in the working one it decreases (2θ = 20.9°). The total crystallinity in the working membrane sample relative to the nonworking one decreased from 36 to 33%, not as a result of recrystallization, but rather as a result of a reduction in crystallites of α-phases, and increased in crystalline formations of γ-phases with imperfect crystalline structure.","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"60 4","pages":"585 - 594"},"PeriodicalIF":1.1,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438656","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

Preparation of Nanoporous Sorbent Based on Bentonite Clay and Aluminum Complexes for Use in Water Purification Processes

IF 1.1 4区材料科学

Protection of Metals and Physical Chemistry of Surfaces Pub Date : 2025-02-18 DOI: 10.1134/S2070205124702150

S. Ts. Khankhasaeva, S. V. Badmaeva

{"title":"Preparation of Nanoporous Sorbent Based on Bentonite Clay and Aluminum Complexes for Use in Water Purification Processes","authors":"S. Ts. Khankhasaeva, S. V. Badmaeva","doi":"10.1134/S2070205124702150","DOIUrl":"10.1134/S2070205124702150","url":null,"abstract":"Aluminum-intercalated materials were prepared from the native and sodium forms of bentonite clay and aluminum polyoxocomplexes using the method of intercalation and subsequent heat treatment at 500°C. The structure and physicochemical properties of the prepared materials were examined. It was found that the intercalated materials had a microporous structure characterized by a specific surface that was twice as large as that of the bentonite clay. The adsorption properties of the materials towards the anionic dye Acid Yellow 36 were studied. The sorption capacity of the intercalated materials increased by up to seven times compared to the initial clay. The physicochemical factors that affect the adsorption properties were identified. According to the IUPAC classification, the dye adsorption isotherm was categorized as type II. The kinetics of the dye adsorption are consistent with the pseudo-second-order kinetics model with a correlation coefficient of 0.9996. The process of dye adsorption onto the Al-intercalated materials is spontaneous and endothermic. The prepared sorbents can be used to remove anionic contaminants from water.","PeriodicalId":745,"journal":{"name":"Protection of Metals and Physical Chemistry of Surfaces","volume":"60 4","pages":"610 - 617"},"PeriodicalIF":1.1,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438657","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

Synthesis and Robust Properties Evaluation of PPY-CuO Nanocomposite for Organic Light Emitting Diodes as Electron Transport Layer Material

IF 1.1 4区材料科学

Protection of Metals and Physical Chemistry of Surfaces Pub Date : 2025-02-18 DOI: 10.1134/S2070205124701958

U. Das, Rohit Kandulna, Rimpi, B. Kachhap, Janardan Choudhary

引用次数: 0