Coatings最新文献_第4页

Electrosprayed Chitosan Nanospheres-Based Films: Evaluating the Effect of Molecular Weight on Physicochemical Properties 电喷雾壳聚糖纳米球薄膜：评估分子量对理化性质的影响

IF 3.4 3区材料科学

Coatings Pub Date : 2024-09-09 DOI: 10.3390/coatings14091159

Bruna Farias, Francisca Rizzi, Rafael Gerhardt, Eduardo Ribeiro, Daiane Dias, Tito Roberto Cadaval, Luiz Antonio Pinto

引用次数: 0

Theoretical Calculations and Experimental Study of the Nitrided Layer of 1Cr17Ni2 Steel 1Cr17Ni2 钢氮化层的理论计算和实验研究

IF 3.4 3区材料科学

Coatings Pub Date : 2024-09-09 DOI: 10.3390/coatings14091160

Jiewen Wang, Jun Li, Lina Tang, Taotao Wu, Xin Liu, Yixue Wang

{"title":"Theoretical Calculations and Experimental Study of the Nitrided Layer of 1Cr17Ni2 Steel","authors":"Jiewen Wang, Jun Li, Lina Tang, Taotao Wu, Xin Liu, Yixue Wang","doi":"10.3390/coatings14091160","DOIUrl":"https://doi.org/10.3390/coatings14091160","url":null,"abstract":"Due to the harsh operating conditions experienced by 1Cr17Ni2 steel, efforts were made to optimize its performance by subjecting 1Cr17Ni2 stainless steel to nitriding treatments at temperatures of 460 °C, 500 °C, and 550 °C, each for durations of 8 and 16 h. The formation state of its cross section was observed through a metallurgical microscope and scanning electron microscope, and it was characterized by hardness measurement. Through a ball-on-disk wear experiment, the adhesive wear and friction coefficient of its non-lubricated sliding were measured. The phase composition of its surface was measured by XRD. The results revealed that nitriding led to the formation of a modified layer on the surface of the samples, with a depth of 130 μm after nitriding at 550 °C for 16 h. The hardness of the modified layer exceeded that of the matrix, reaching up to 1400 Hv0.1. X-ray diffraction (XRD) analysis of the sample surfaces indicated the presence of high-hardness phases such as CrN, γ′-Fe4N, and ε-Fe2-3N. This article predicts the mechanical properties of nitrided phases in high-alloy martensitic stainless steel through first-principles computational methods. We provide a reference for improving the performance of high-alloy steel after nitriding through a combination of theoretical calculations and experiments.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"53 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Integration of Self-Assembled Monolayers for Cobalt/Porous Low-k Interconnects 钴/多孔低 k 互连的自组装单层膜集成

IF 3.4 3区材料科学

Coatings Pub Date : 2024-09-09 DOI: 10.3390/coatings14091162

Yi-Lung Cheng, Joe Kao, Hao-Wei Zhang, Bo-Jie Liao, Giin-Shan Chen, Jau-Shiung Fang

引用次数: 0

Removal of Remazol Red Dyes Using Zeolites-Loaded Nanofibre Coated on Fabric Substrates 利用涂覆在织物基底上的沸石负载纳米纤维去除雷马佐红色染料

IF 3.4 3区材料科学

Coatings Pub Date : 2024-09-08 DOI: 10.3390/coatings14091155

Siddratul Sarah binti Mohd Hami, Nor Dalila Nor Affandi, Liliana Indrie, Ahmad Mukifza Harun

{"title":"Removal of Remazol Red Dyes Using Zeolites-Loaded Nanofibre Coated on Fabric Substrates","authors":"Siddratul Sarah binti Mohd Hami, Nor Dalila Nor Affandi, Liliana Indrie, Ahmad Mukifza Harun","doi":"10.3390/coatings14091155","DOIUrl":"https://doi.org/10.3390/coatings14091155","url":null,"abstract":"Nanofibre-based membranes have shown great potential for removing textile wastewater due to their high porosity and surface area. However, nanofibre membranes exhibit lower dye removal efficiency. Hence, this study aims to improve the dye removal performance of nanofibre membranes by incorporating zeolites. The research involved fabricating composite membranes by electrospinning polyvinyl alcohol (PVA) nanofibres incorporated with zeolites. Mechanical strength was enhanced by placing the PVA/zeolite nanofibre membrane between fusible nonwoven interfacing and woven polyester fabric, followed by heat treatment. Morphological analysis revealed the uniform dispersion of zeolite particles within the PVA nanofibres. EDX analysis confirmed the successful incorporation of zeolites into the fibres. Among all membrane samples, the PZ-0.75 membrane exhibited the highest pure water flux (PWF) with approximately 1358.57 L·m−2·min−1 for distilled water and 499.85 L·m−2·min−1 for batik wastewater. Turbidity of batik wastewater increased proportionally with zeolite concentration, with removal rates of 84.79%, 78.8%, 76.96%, and 74.19% for PZ-0.75, PZ-0.5, PZ-0.25, and PVA membranes, respectively. Furthermore, the UV/Vis spectrophotometer demonstrated that dye removal efficiency increased from 2.22% to 8.89% as the zeolite concentration increased from 0% to 0.75%. In addition, the PZ-0.75 membrane effectively removed RR dye at a concentration of 1 mg/L, with an optimal contact time of approximately 60 min. The adsorption mechanism of the PZ-0.75 membrane aligns with the Freundlich model, with an R2 value of 0.983. Overall, this study demonstrates the efficiency of zeolite in the fabric substrates to improve the filtration and adsorption properties for wastewater treatment, particularly in textile industries.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"30 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Microstructure and Tribological Properties of WC/Ni-MoS2 Titanium-Based Composite Coating on TC4 TC4 上 WC/Ni-MoS2 钛基复合涂层的微观结构和摩擦学特性

IF 3.4 3区材料科学

Coatings Pub Date : 2024-09-08 DOI: 10.3390/coatings14091157

Changhao Wang, Xiaohui Yan, Tiangang Zhang, Qiyu Zhang, Zhiqiang Zhang

{"title":"Microstructure and Tribological Properties of WC/Ni-MoS2 Titanium-Based Composite Coating on TC4","authors":"Changhao Wang, Xiaohui Yan, Tiangang Zhang, Qiyu Zhang, Zhiqiang Zhang","doi":"10.3390/coatings14091157","DOIUrl":"https://doi.org/10.3390/coatings14091157","url":null,"abstract":"To improve the mechanical properties of a TC4 surface, TC4 + Ni-MoS2 + xWC (x = 5%, 10% and 15% wt.%) composite coatings were prepared by the coaxial feeding laser cladding technique, and the effect of the WC content on the microstructure and tribological properties of the coatings were investigated using multiple characterization methods. The results indicated that increasing the WC content negatively impacted the forming quality of the coating, but did not change the coating phase which predominantly comprised Ti2Ni, Ti2S, TiC, matrix β-Ti and residual WC. With the addition of WC, TiC exhibited an increase in both quantity and particle size, accompanied by a transition in growth morphology from spherical to petal-like. MoS2 completely dissolved in all coatings and the S element provided by it effectively synthesized a strip-like phase Ti2S which presented a morphology similar to the lubricating phase TiS in the Ti-based melt pool system. The microhardness and wear-resistance of all the coatings were higher than that of TC4 and gradually improved with the addition of WC, which indicated that raising the WC content was conducive to enhancing the mechanical properties of the coatings. The friction coefficient of TC4 was lower than that of the three WC content coatings, indicating that Ti2S was not the lubricating phase. The wear mechanism of all coatings was abrasive wear.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"79 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Study of Properties of Water-Dispersion Paint and Varnish Compositions with the Content of Modified Mineral Filler 含改性矿物填料的水分散涂料和清漆成分的性能研究

IF 3.4 3区材料科学

Coatings Pub Date : 2024-09-08 DOI: 10.3390/coatings14091154

Ruslan E. Nurlybayev, Erzhan I. Kuldeyev, Zaure N. Altayeva, Zhanar O. Zhumadilova, Axaya S. Yestemessova, Yelzhan S. Orynbekov

{"title":"Study of Properties of Water-Dispersion Paint and Varnish Compositions with the Content of Modified Mineral Filler","authors":"Ruslan E. Nurlybayev, Erzhan I. Kuldeyev, Zaure N. Altayeva, Zhanar O. Zhumadilova, Axaya S. Yestemessova, Yelzhan S. Orynbekov","doi":"10.3390/coatings14091154","DOIUrl":"https://doi.org/10.3390/coatings14091154","url":null,"abstract":"This article presents the results of research work devoted to improving the characteristics of paint and varnish coatings based on aqueous dispersions of polyacrylates; it is proposed to modify them by introducing mineral raw materials as fillers and hydrated lime, with subsequent processing in a vortex layer apparatus. The introduction of activated diatomite does not cause the deterioration of covering power, adhesion or an increase in the porosity of the paint material. The modification of coatings contributes to an increase in their operational properties, which can be associated with a reduction in the free volume in the composite and the formation of polymer boundary layers with modified physical and chemical properties. The aim of this study is to obtain a water-dispersion paint and varnish composition containing modified diatomite on a polyacrylate basis and, subsequently, study its main physical and mechanical parameters. The work has been carried out by the following method: determination of porosity, adhesion, elasticity and covering power of the control composition; determination of porosity, adhesion, elasticity and covering power of the obtained composites using modified filler; investigation of the influence of radiation on the infrared spectrum of the paint coating surface using a FLIRB620 thermal imager. As a result of this research work, it was noticed that the modification of water dispersions with silica-activated diatomite helps to eliminate the main disadvantages of materials and coatings based on acrylate binders—low water resistance and low physical and mechanical characteristics. The introduction of modified diatomite into water-emulsion paint on an acrylate base does not lead to the deterioration of the main performance characteristics of paint coatings—porosity, adhesion, elasticity and covering.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"180 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 Robust Superhydrophobic Coatings Using Hydrophobic and Tough Micro/Nano Particles 利用疏水性和韧性微/纳米粒子制备坚固的超疏水涂层

IF 3.4 3区材料科学

Coatings Pub Date : 2024-09-08 DOI: 10.3390/coatings14091156

Tianyi Feng, Yifan Liu, Siyan Ye, Liping Sheng, Binrui Wu, Lingcai Huang

{"title":"Preparation of Robust Superhydrophobic Coatings Using Hydrophobic and Tough Micro/Nano Particles","authors":"Tianyi Feng, Yifan Liu, Siyan Ye, Liping Sheng, Binrui Wu, Lingcai Huang","doi":"10.3390/coatings14091156","DOIUrl":"https://doi.org/10.3390/coatings14091156","url":null,"abstract":"Superhydrophobic nanocomposite coatings, prepared using adhesive and fillers, offer advantages including ease of fabrication and suitability for large-scale applications, but compared with other types of artificial superhydrophobic surfaces, poor durability still limits these surfaces from practical applications. The utilization of micro/nanoscale particles with both intrinsic hydrophobicity and robust mechanical properties to prepare coatings should significantly contribute to enhanced durability. Herein, rough and hydrophobic particles with micro/nano hierarchical structures were prepared at first, and robust superhydrophobic surfaces were fabricated using the prepared particles and additional nanoparticles. The initially prepared particles formed a rough framework of the coating, while additional nanoparticles provided inevitable nanoscale structures. A series of mechanical tests were carried out to validate the durability, and the surface with 20 wt.% NPs exhibited the best performance, withstanding 30 tape peeling tests, a 2.47 m sandpaper rubbing test (at a pressure of 5 kPa), the impact of 200 g of grit dropped from a height of 20 cm, and a 2 h acidic immersion. These appealing materials may attract attention for self-cleaning, anti-icing, and anti-fouling applications in the coatings industry.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"372 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Fatty Imidazolines as a Green Corrosion Inhibitor of Bronze Exposed to Acid Rain 脂肪咪唑类化合物作为青铜在酸雨中的绿色缓蚀剂

IF 3.4 3区材料科学

Coatings Pub Date : 2024-09-07 DOI: 10.3390/coatings14091152

Ian Didiere Vázquez-Aguirre, Alvaro Torres-Islas, Edna Vázquez-Vélez, Horacio Martínez, Adrián del Pozo-Mares, Ave María Cotero-Villegas

{"title":"Fatty Imidazolines as a Green Corrosion Inhibitor of Bronze Exposed to Acid Rain","authors":"Ian Didiere Vázquez-Aguirre, Alvaro Torres-Islas, Edna Vázquez-Vélez, Horacio Martínez, Adrián del Pozo-Mares, Ave María Cotero-Villegas","doi":"10.3390/coatings14091152","DOIUrl":"https://doi.org/10.3390/coatings14091152","url":null,"abstract":"Acid rain is one of the primary corrosive agents on bronze exposed to the atmosphere. Bronze naturally forms a layer of oxides on its surface called patina, protecting it from corrosion. However, when exposed to acid rain, this layer dissolves, making it necessary to use a corrosion inhibitor or stabilize the patina. This study investigated fatty imidazolines derived from agro-industrial waste bran as a corrosion inhibitor of SAE-62 bronze in simulated acid rain (pH of 4.16 ± 0.1). Electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization curve (PC) measurements were used to evaluate corrosion inhibition efficiency, which was 90% for an inhibitor concentration of 50 ppm. The EIS measurements showed that the fatty imidazolines formed a protective film that stabilized the patina on the bronze surface to a certain extent by hindering the charge transfer process. SEM–EDS analyzed the morphology and composition of the protective oxide layer. The results were complemented by Raman spectroscopy and XRD analysis, indicating cuprite, tenorite, cassiterite, and covellite in the patina layer formed on the bronze surface. The SEM analysis showed that the protective coating on the bronze surface was homogeneous using a 50-ppm inhibitor concentration. The XRD analysis suggested the presence of an organic complex that stabilizes the corrosion products formed on the bronze surface.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"280 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Coating of Refractory Surfaces with Fine TiO2 Particles via Gas-Dynamic Cold Spraying 通过气体动力冷喷法在耐火材料表面镀上细小的二氧化钛颗粒

IF 3.4 3区材料科学

Coatings Pub Date : 2024-09-07 DOI: 10.3390/coatings14091151

Olha Aleksieieva, Mustafa Bozoglu, Pavlo Tretiakov, Andrii Toporov, Sergiy Antonyuk

{"title":"Coating of Refractory Surfaces with Fine TiO2 Particles via Gas-Dynamic Cold Spraying","authors":"Olha Aleksieieva, Mustafa Bozoglu, Pavlo Tretiakov, Andrii Toporov, Sergiy Antonyuk","doi":"10.3390/coatings14091151","DOIUrl":"https://doi.org/10.3390/coatings14091151","url":null,"abstract":"Refractory materials are used worldwide in process equipment. However, gaseous and liquid process products penetrate the surface layer and deep into the volume of refractories, destroying rather expensive constructions that are complicated to repair. To address this challenge, there is a need to develop protective coatings for refractory materials that can limit the penetration of working media and extend their operational lifespan. In this work, the application of gas-dynamic cold spraying (CGDS) to produce a coating on the refractory materials using fine titanium dioxide (TiO2) particles is explored. These particles are accelerated within a nitrogen flow, passing through a Laval nozzle, and then sprayed onto a fireclay surface. The mechanisms of particle deposition and layer formation on porous surfaces through experiments and numerical simulations were investigated. The geometry of a typical refractory pore was determined, which was then incorporated into computational fluid dynamics (CFD) simulations to model the cold spraying process of porous substrates. As a result, the influence of the particle size on its velocity and angle of penetration into pores was established. Experimental findings demonstrate the effective closure of pores and the formation of a particle layer on the refractory surface. Furthermore, the nanoindentation tests for the refractory samples showcase capabilities for checking coating thickness for porous materials.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"5 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Thermal Corrosion Properties of Composite Ceramic Coating Prepared by Multi-Arc Ion Plating 多弧离子镀制备的复合陶瓷涂层的热腐蚀特性

IF 3.4 3区材料科学

Coatings Pub Date : 2024-09-07 DOI: 10.3390/coatings14091150

Feng Ding, Xiaoxin Wei, Jiangdong Cao, Yujie Ma, Hongbin Su, Ting Zhao, Jiahan You, Yazhong Lv

{"title":"Thermal Corrosion Properties of Composite Ceramic Coating Prepared by Multi-Arc Ion Plating","authors":"Feng Ding, Xiaoxin Wei, Jiangdong Cao, Yujie Ma, Hongbin Su, Ting Zhao, Jiahan You, Yazhong Lv","doi":"10.3390/coatings14091150","DOIUrl":"https://doi.org/10.3390/coatings14091150","url":null,"abstract":"In this study, a NiCr/YSZ coating was applied to a γ-TiAl surface using multi-arc ion plating technology to enhance its high-temperature performance and explore the mechanisms of high-temperature oxidation and thermal corrosion. The thermal corrosion properties of the γ-TiAl matrix and NiCr/YSZ coating were investigated at 850 °C and 950 °C using a constant-temperature corrosion test in a 75% Na2SO4 + 25% NaCl mixture. The results indicate that after 100 h, the thermal corrosion weight gain of the coating samples was 70.1 mg/cm2 at 850 °C and 118.2 mg/cm2 at 950 °C. At these temperatures, sulfide formation on the surface increases, leading to a loose and porous surface. After 100 h of high-temperature corrosion at 850 °C, the primary oxidation product on the surface of the coating was tetragonal-ZrO2. At 950 °C, Y2O3, which mainly acts as a stabilizer in YSZ, reacted with Na2SO4, resulting in the continuous consumption of Y2O3. This reaction caused a substantial amount of tetragonal-ZrO2 to transform into monoclinic-ZrO2, altering the volume of the ceramic layer, which induced internal stress, crack propagation, and minor spallation. A continuous and dense internal thermally grown oxide (TGO) layer effectively impeded the diffusion of molten salt substances and oxygen, thereby significantly improving the thermal corrosion resistance of the thermal barrier coating.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"22 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142215800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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