Coatings最新文献_第4页

Interfacial Mechanism of Biological Property Enhancement in Irradiated MAO Coatings by HIPIB HIPIB增强辐照MAO涂层生物性能的界面机理

3区材料科学

Coatings Pub Date : 2025-10-09 DOI: 10.3390/coatings15101184

Yi Wei, Yujie Shao, Yongxin Jiao, Xiaoguang Han

{"title":"Interfacial Mechanism of Biological Property Enhancement in Irradiated MAO Coatings by HIPIB","authors":"Yi Wei, Yujie Shao, Yongxin Jiao, Xiaoguang Han","doi":"10.3390/coatings15101184","DOIUrl":"https://doi.org/10.3390/coatings15101184","url":null,"abstract":"Magnesium alloy micro-arc oxidation (MAO) coatings are limited in biomedical applications due to their poor corrosion resistance. High-intensity pulsed ion beam (HIPIB) treatment enhances corrosion resistance as well as biocompatibility, but the underlying mechanisms are not well understood. In this study, CCK-8 assays, flow cytometry, and ALP activity tests were employed to investigate the bioactivity of the MAO coatings, and the surface properties of the coatings were characterized by SEM observation. Compared with pristine coating, the porosity of the MAO coating decreased by 9.44%, calcium content increased by 0.23%, and surface roughness and hydrophobicity increased to 7.57 and 102.11, respectively, with HIPIB irradiation. CCK-8 assays showed that the HIPIB-modified coating significantly improved cell proliferation, with a growth rate increase to 61.29% on Day 3. Flow cytometry analysis revealed accelerated cell cycle progression, especially a faster transition from the G1 to S and G2 phases, indicative of enhanced proliferation. Increased ALP activity further indicated that the irradiated coatings promoted osteogenic differentiation. The formed remelted dense layer with an increase in Ca content and high roughness induced by HIPIB irradiation not only acts as a corrosion barrier but also promotes the adhesion and differentiation of osteoblasts, which is mainly responsible for the enhancement of biological properties.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"15 10","pages":"1184-1184"},"PeriodicalIF":0.0,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2079-6412/15/10/1184/pdf?version=1760014930","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147886645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing the Durability of Palm-Leaf Manuscripts: A Comparative Study of CPAM and CQAS Encapsulation Materials 提高棕榈叶手稿耐久性：CPAM和CQAS包封材料的比较研究

3区材料科学

Coatings Pub Date : 2025-10-08 DOI: 10.3390/coatings15101178

Sen Wu, Li Yan, Jingyu Zhang, Haohai Yu, Rui Lin, Hui Yu, Peng Liu, Yanyan Huang

{"title":"Enhancing the Durability of Palm-Leaf Manuscripts: A Comparative Study of CPAM and CQAS Encapsulation Materials","authors":"Sen Wu, Li Yan, Jingyu Zhang, Haohai Yu, Rui Lin, Hui Yu, Peng Liu, Yanyan Huang","doi":"10.3390/coatings15101178","DOIUrl":"https://doi.org/10.3390/coatings15101178","url":null,"abstract":"Palm-leaf manuscripts (PLMs) represent a significant component of cultural heritage as a medium for information recording. However, the inherent fragility of these organic materials presents a major challenge for their long-term preservation. Therefore, enhancing the durability of PLMs to ensure longevity has become a critical issue in conservation research. This study includes an examination of the potential of two polymers, cationic polyacrylamide (CPAM) and chitosan quaternary ammonium salt (CQAS), for PLM encapsulation. The encapsulation effects of these materials were assessed through artificial moist heat-accelerated aging tests, enabling a comprehensive evaluation of structural and mechanical properties at both the macroscopic and microscopic levels. The results indicated that CPAM provided superior performance in terms of gloss, color stability, hydrophobicity, pH value, and tensile properties, whereas CQAS demonstrated notable antifungal efficacy. Both CPAM and CQAS possess distinct advantages and can significantly contribute to the preservation of PLMs. This work offers valuable insights for developing effective conservation strategies, emphasizing the potential of CPAM and CQAS as viable encapsulation materials in the face of conservation requirements.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"15 10","pages":"1178-1178"},"PeriodicalIF":0.0,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2079-6412/15/10/1178/pdf?version=1759916863","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147331470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of Weather-Resistant Nano-Coating Materials and Its Application in the Protection of Ancient Building Paintings 耐候纳米涂层材料的制备及其在古建筑壁画保护中的应用

3区材料科学

Coatings Pub Date : 2025-10-04 DOI: 10.3390/coatings15101161

Jinlong Yang, Jian Zeng, Weihong Zhang, Siping Huang, Haoming Yang, T.Q. Wang, Xinfeng Yu, Jing Cao

引用次数: 1

Understanding the Correlations Between the Formation of Columnar Structures and Suspension Properties for Suspension Plasma-Sprayed Thermal Barrier Coatings 悬浮等离子喷涂热障涂层柱状结构形成与悬浮性能关系的研究

3区材料科学

Coatings Pub Date : 2025-10-01 DOI: 10.3390/coatings15101132

Yachen Feng, Wenhan Jiao, Pengyun Xu, Xiaomu Sui, Guijie Liu, Xianghua Zhan, Changfeng Fan, M. Lv

{"title":"Understanding the Correlations Between the Formation of Columnar Structures and Suspension Properties for Suspension Plasma-Sprayed Thermal Barrier Coatings","authors":"Yachen Feng, Wenhan Jiao, Pengyun Xu, Xiaomu Sui, Guijie Liu, Xianghua Zhan, Changfeng Fan, M. Lv","doi":"10.3390/coatings15101132","DOIUrl":"https://doi.org/10.3390/coatings15101132","url":null,"abstract":"Columnar-structured thermal barrier coatings deposited via the suspension plasma spray process have attracted significant attention due to their long thermal cycling life and high cost-effectiveness. In this work, the effects of suspension properties, including solvent type, viscosity, and particle size, on the formation of different coating microstructures were investigated via a comparative study. Two different kinds of solvents (water and ethanol) and particles of different sizes (D50 = 0.45 μm and 1.2 μm) were used to prepare suspensions for coating deposition, respectively. When using suspensions containing small-sized particles as feedstock, coatings deposited from the ethanol-based suspension showed columnar microstructures with inter-column crevices, while the water-based suspension resulted in cracked–columnar microstructures, showing a mixture of columns and cracks. When the large-sized particles were used to prepare the suspension, both the ethanol-based suspension and the water-based suspension resulted in homogeneous coating microstructures. The formation mechanism of different microstructures was investigated by modelling the diverted plasma jet and the in-flight particle movement during the impingement period. Particles smaller than 2 μm were strongly affected by the diverted plasma gas, showing obvious oblique impinging trajectories, while particles larger than 3 μm kept their original trajectories and impinged on the substrate orthogonally. The formation mechanism of different microstructures was elaborated by analyzing the impinging trajectories of particles transitioning from different suspensions.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"15 10","pages":"1132-1132"},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2079-6412/15/10/1132/pdf?version=1759285582","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147894217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Effect of LaPO4 Crystal Morphology on Gas-Phase Catalytic Synthesis of Anisole LaPO4晶体形态对气相催化合成苯甲醚的影响

3区材料科学

Coatings Pub Date : 2025-09-18 DOI: 10.3390/coatings15091093

Wei Wang, Qiwen Zhang, Fan Zhang, H. Li, Ying Liu, Kemeng Wei, Yan Zhao, Songlin Yu, Yajun Li, Feng Zhang, Meili Yang, Qingqing Hao, Xiaolin Luo

引用次数: 0

Chemical Deposition Method for Preparing VO2@AlF3 Core–Shell-Structured Nanospheres for Smart Temperature-Control Coating 化学沉积法制备VO2@AlF3核壳结构纳米微球用于智能温控涂层

3区材料科学

Coatings Pub Date : 2025-09-06 DOI: 10.3390/coatings15091045

Lingfeng Jiang, Yifei Chen, Haiyan Liu, Haitao Zhang, Li Zhao

{"title":"Chemical Deposition Method for Preparing VO2@AlF3 Core–Shell-Structured Nanospheres for Smart Temperature-Control Coating","authors":"Lingfeng Jiang, Yifei Chen, Haiyan Liu, Haitao Zhang, Li Zhao","doi":"10.3390/coatings15091045","DOIUrl":"https://doi.org/10.3390/coatings15091045","url":null,"abstract":"Vanadium dioxide (VO2) has become one of the most promising smart temperature-controlled thin-film materials due to its reversible phase transition between a metallic and an insulating state at approximately 68 °C, accompanied by negligible volume change and excellent optical modulation properties. However, the practical application of VO2 is still limited by its relatively high phase transition temperature and susceptibility to oxidation. To address these two major shortcomings, this study employed a one-step hydrothermal method to prepare a VO2 nanopowder, followed by a chemical precipitation method to form a VO2@AlF3 core–shell structure. The coated nanoparticles were then dispersed in a PVP ethanol solution, coated onto a glass substrate, and evaluated for performance. The experimental results indicate that when the molar ratio of VO2 to AlF3 reached 1:1, the phase transition temperature of VO2@AlF3 was effectively reduced to 50.3 °C, significantly lower than the original temperature of 68 °C. Additionally, the material exhibited favorable optical properties, with a solar modulation ability (ΔTsol) of 17.2% and a luminous transmittance (Tlum) of 36.3%. After calcination in air at 300 °C for 3–6 h, the VO2 core remained oxidation-resistant and maintained excellent phase-change thermal insulation properties.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"15 9","pages":"1045-1045"},"PeriodicalIF":0.0,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2079-6412/15/9/1045/pdf?version=1757135588","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147900604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sintering Kinetics, Mechanical Properties, and Electrical Conductivity of Ti-67 at% Al Targets Fabricated via Spark Plasma Sintering 火花等离子烧结制备Ti-67 % Al靶材的烧结动力学、机械性能和电导率

3区材料科学

Coatings Pub Date : 2025-09-03 DOI: 10.3390/coatings15091029

Qizhong Li, Weiyan Wang, Yibing Su, Yuzhe Han, Meijun Yang, Takashi Goto, Rong Tu

{"title":"Sintering Kinetics, Mechanical Properties, and Electrical Conductivity of Ti-67 at% Al Targets Fabricated via Spark Plasma Sintering","authors":"Qizhong Li, Weiyan Wang, Yibing Su, Yuzhe Han, Meijun Yang, Takashi Goto, Rong Tu","doi":"10.3390/coatings15091029","DOIUrl":"https://doi.org/10.3390/coatings15091029","url":null,"abstract":"Ti–Al alloys have widespread applications as targets in hard coatings by PVD (Physical Vapor Deposition). While the importance of target density is recognized, the densification mechanisms of Ti-67 at% Al targets, particularly during spark plasma sintering (SPS), remain poorly understood, hindering process optimization. This study aims to clarify these mechanisms by fabricating Ti-67 at% Al targets via SPS and examining their densification behavior through a detailed analysis of the creep model based on the stress exponent (n) and apparent activation energy (Qd). The target’s relative density gradually increased in the temperature range of 370–530 °C, whereas the grain size remained relatively constant, indicating that the densification process dominated during this period. The results reveal that densification is primarily controlled by intergranular diffusion (n ≈ 2, Qd = 97.29 kJ/mol) and dislocation climbing (n ≈ 3, Qd = 158.74 kJ/mol). The target’s relative density reached 98.25% at 530 °C, with a corresponding grain size of 10.86 ± 1.08 μm. Additionally, as the temperature increased, the Vickers hardness of the target increased from 61.56 HV to 129.66 HV, and the electrical conductivity rose from 0.23 S/cm to 0.86 S/cm. This work provides a fundamental understanding of the densification kinetics in Ti-67 at% Al alloys during SPS, establishing a crucial guideline for fabricating high-performance PVD targets.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"15 9","pages":"1029-1029"},"PeriodicalIF":0.0,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2079-6412/15/9/1029/pdf?version=1756873253","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147909923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergistic Photoelectrocatalytic Degradation of Tetracycline Using Phosphate-Grafted Mo:BiVO4 Photoanode Coupled with Pd/CMK-3 Cathode for Dual-Functional Activation of Water and Molecular Oxygen 磷酸接枝Mo:BiVO4光阳极与Pd/CMK-3阴极对水和分子氧双功能活化的协同光电催化降解四环素

3区材料科学

Coatings Pub Date : 2025-09-02 DOI: 10.3390/coatings15091027

Minglei Yang, Zhen Xu, Chongjun Tang, Shuaijie Wang, Zhourong Xiao, Fei Ye

{"title":"Synergistic Photoelectrocatalytic Degradation of Tetracycline Using Phosphate-Grafted Mo:BiVO4 Photoanode Coupled with Pd/CMK-3 Cathode for Dual-Functional Activation of Water and Molecular Oxygen","authors":"Minglei Yang, Zhen Xu, Chongjun Tang, Shuaijie Wang, Zhourong Xiao, Fei Ye","doi":"10.3390/coatings15091027","DOIUrl":"https://doi.org/10.3390/coatings15091027","url":null,"abstract":"This research introduces a synergistic photoelectrocatalytic (PEC) system designed for the effective degradation of tetracycline (TC), integrating a PO43−-grafted Mo-doped BiVO4 (PO43−-Mo:BiVO4) photoanode with a Pd-loaded ordered mesoporous carbon (Pd/CMK-3) cathode. The incorporation of Mo doping and PO43− modification significantly improved the photoanode’s charge separation efficiency, achieving a photocurrent density of 2.9 mA cm−2, and fine-tuned its band structure to enhance hydroxyl radical (·OH) generation. Meanwhile, the Pd/CMK-3 cathode promoted a two-electron oxygen reduction reaction pathway, producing hydrogen peroxide (H2O2) and facilitating molecular oxygen activation via atomic hydrogen (H*) intermediates. Under optimized conditions—1.0 V vs. Ag/AgCl of anodic potential, pH 6.58, and oxygen saturation—the combined system accomplished 80% TC degradation within 60 min, markedly surpassing the performance of the photoanode (72%) or cathode (71%) alone. Notably, this synergistic approach also reduced energy consumption to 0.0065 kWh m−3, outperforming individual components. Radical quenching experiments and liquid chromatography–mass spectrometry (LC-MS) analysis revealed that the photogenerated holes (h+) and ·OH were the key reactive species responsible for TC mineralization. The system demonstrated remarkable stability, with only a 2.96% decline in activity, and effectively degraded other contaminants, such as phenol, 4-chlorophenol, and ciprofloxacin. This study highlights an energy-efficient PEC strategy that harnesses the combined strengths of anodic oxidation and cathodic molecular oxygen activation to significantly enhance the removal of organic pollutants.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"15 9","pages":"1027-1027"},"PeriodicalIF":0.0,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2079-6412/15/9/1027/pdf?version=1756823557","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147908038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fluorescence Lifetime as a Ruler: Quantifying Sm3+ Doping Levels in Na4La2 (CO3)5 Crystals via Time-Resolved Luminescence Decay 荧光寿命作为标尺：通过时间分辨发光衰减量化Na4La2 (CO3)5晶体中Sm3+掺杂水平

3区材料科学

Coatings Pub Date : 2025-09-01 DOI: 10.3390/coatings15091012

Shijian Sun, Mengquan Liu, Zheng Li, Junqiang Cheng, Dechuan Li

{"title":"Fluorescence Lifetime as a Ruler: Quantifying Sm3+ Doping Levels in Na4La2 (CO3)5 Crystals via Time-Resolved Luminescence Decay","authors":"Shijian Sun, Mengquan Liu, Zheng Li, Junqiang Cheng, Dechuan Li","doi":"10.3390/coatings15091012","DOIUrl":"https://doi.org/10.3390/coatings15091012","url":null,"abstract":"Hollow dendritic Na4La2(CO3)5 crystals doped with Sm3+ ions were synthesized with sodium carbonate using a hydrothermal method. The unique lifetime of Sm3+ enables the optical measurement of luminescent ion content. The X-ray diffraction spectrum indicates that the nanocrystals maintain structural stability with a hexagonal arrangement, even when the concentration of Sm3+ reaches 50 at.%. As the concentration of Sm3+ increases, the emission intensity of Na4(La1−xSmx)2(CO3)5 first rises and then falls. The maximum emission intensity of the fluorescent powder occurs at a Sm3+ concentration of 0.04. Beyond this concentration, concentration quenching takes place, primarily due to electric dipole–dipole interactions. Using an excitation wavelength of 404 nm and monitoring at 596 nm, the fluorescence lifetime of Na4(La1−xSmx)2(CO3)5 shows a strong dependence on Sm3+ concentration, which can be described by a precise equation. Over the range of Sm3+ concentrations from 0.005 to 1, the lifetime decreases from 3.126 ms to 0.023 ms. Therefore, optical monitoring of fluorescent powders is crucial for confirming the composition of coatings used in applications such as solid-state lighting and anti-counterfeiting, by utilizing the relationship between lifetime and doping concentration.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"15 9","pages":"1012-1012"},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2079-6412/15/9/1012/pdf?version=1756711373","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147912474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gelatin–Sodium Alginate Composite Hydrogel for Sustained Release of Simvastatin Enabled Osteogenic Differentiation 明胶-海藻酸钠复合水凝胶缓释辛伐他汀促进成骨分化

3区材料科学

Coatings Pub Date : 2025-08-30 DOI: 10.3390/coatings15091004

Xinyue Zhang, Ning Guan, Qin Chen, Kai Chen, Cunao Feng, Dekun Zhang

{"title":"Gelatin–Sodium Alginate Composite Hydrogel for Sustained Release of Simvastatin Enabled Osteogenic Differentiation","authors":"Xinyue Zhang, Ning Guan, Qin Chen, Kai Chen, Cunao Feng, Dekun Zhang","doi":"10.3390/coatings15091004","DOIUrl":"https://doi.org/10.3390/coatings15091004","url":null,"abstract":"Sim, a potent HMG-CoA reductase inhibitor, exhibits notable anabolic effects on bone and can upregulate osteogenic genes such as BMP-2, thereby promoting bone formation. An ideal drug delivery system for Sim involves its controlled and sustained release at the defect site to minimize adverse side effects. In this study, Sim was first modified via HP-γ-CD to form a hydrophilic Sim/HP-γ-CD inclusion complex, thereby improving drug solubility and dispersion in aqueous systems. A gelatin–sodium alginate (Gel/SA) hydrogel was then employed as the drug delivery matrix to construct a Gel-SA-Sim/HP-γ-CD hydrogel sustained release system. This hydrogel system exhibited a high water content (82%), along with enhanced mechanical properties, including a compressive strength of 0.284 MPa and a compressive modulus of 0.277 MPa, suggesting strong load-bearing capacity and favorable stiffness. Importantly, Sim was released in a controlled and sustained manner over 7 days, without exhibiting burst release behavior. In vitro osteogenic differentiation assays demonstrated that optimal concentrations of Sim effectively enhanced cellular bioactivity and osteoinductive performance, offering a promising approach to enhance the bioactivity, osteogenesis, and osseointegration of orthopedic implants.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"15 9","pages":"1004-1004"},"PeriodicalIF":0.0,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2079-6412/15/9/1004/pdf?version=1756519703","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147886183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2