THE Coatings最新文献_第4页

Plasma Electrolytic Oxidation Ceramic Coatings on Zirconium (Zr) and ZrAlloys: Part I—Growth Mechanisms, Microstructure, and Chemical Composition 锆(Zr)和zr合金的等离子体电解氧化陶瓷涂层:第一部分-生长机制，微观结构和化学成分

THE Coatings Pub Date : 2021-05-25 DOI: 10.3390/COATINGS11060634

N. Attarzadeh, C. Ramana

引用次数: 13

Aluminum Powder Preparation for Additive Manufacturing Using Electrostatic Classification 静电分级制备增材制造用铝粉

THE Coatings Pub Date : 2021-05-24 DOI: 10.3390/COATINGS11060629

A. Shinkaryov, M. Cherkasova, I. Pelevin, D. Ozherelkov, S. V. Chernyshikhin, N. Kharitonova, A. Gromov, A. Nalivaiko

{"title":"Aluminum Powder Preparation for Additive Manufacturing Using Electrostatic Classification","authors":"A. Shinkaryov, M. Cherkasova, I. Pelevin, D. Ozherelkov, S. V. Chernyshikhin, N. Kharitonova, A. Gromov, A. Nalivaiko","doi":"10.3390/COATINGS11060629","DOIUrl":"https://doi.org/10.3390/COATINGS11060629","url":null,"abstract":"This work aims to study the possibility of using an electrostatic drum-type separator to prepare a powder with a narrow size distribution curve for usage in additive manufacturing. The size distributions of the uncoated commercial aluminum powders ASP-30, ASP-22, and ASP-5 were analyzed. It was shown that the powders ASP-30 and ASP-22 have similar asymmetric distributions with a SPAN of 1.480 and 1.756, respectively. ASP-5 powder, in turn, has a narrow distribution with a SPAN of 0.869. ASP-30 powder was chosen for further experiment because, traditionally, separators are used to classify large-sized materials with particle size more than 100 μm. The optimal mode of electrostatic classification was proposed for the selected powder. Various classification methods, including centrifugal and electrostatic, were compared. The powders before and after classification were studied by XRD, SEM, TEM, and TG–DSC analyses. The obtained results showed that electrostatic classification does not lead to the formation of coatings on the processed powders. Electrostatic separation effectively narrows the particle size distribution, making it a suitable and valuable method to classify initial powders for additive manufacturing.","PeriodicalId":22482,"journal":{"name":"THE Coatings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73915984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Quantification of High Resolution Pulsed RF GDOES Depth Profiles for Mo/B4C/Si Nano-Multilayers Mo/B4C/Si纳米多层膜高分辨率脉冲射频GDOES深度剖面定量研究

THE Coatings Pub Date : 2021-05-21 DOI: 10.3390/COATINGS11060612

Hao Yang, S. Lian, P. Chapon, Y. Song, J. Wang, Congkang Xu

引用次数: 2

Fabrication of Thermal Plasma Sprayed NiTi Coatings Possessing Functional Properties 具有功能性能的热等离子喷涂NiTi涂层的制备

THE Coatings Pub Date : 2021-05-20 DOI: 10.3390/COATINGS11050610

S. Samal, O. Tyc, J. Cizek, Jakub Klecka, F. Lukáč, O. Molnárová, E. de Prado, Z. Weiss, J. Kopeček, L. Heller, P. Šittner, T. Chráska

引用次数: 19

Microstructure and Corrosion Behavior of Ti-Nb Coatings on NiTi Substrate Fabricated by Laser Cladding 激光熔覆NiTi基板上Ti-Nb涂层的组织与腐蚀行为

THE Coatings Pub Date : 2021-05-19 DOI: 10.3390/COATINGS11050597

Hu Jie, Yaojia Ren, Qianli Huang, Hao He, Luxin Liang, Jingbo Liu, Rui-di Li, Hong Wu

引用次数: 5

Controlling Film Thickness Distribution by Magnetron Sputtering with Rotation and Revolution 旋转和旋转磁控溅射控制膜厚分布

THE Coatings Pub Date : 2021-05-19 DOI: 10.3390/COATINGS11050599

H. Huang, Li Jiang, Yiyun Yao, Zhong Zhang, Zhanshan Wang, R. Qi

{"title":"Controlling Film Thickness Distribution by Magnetron Sputtering with Rotation and Revolution","authors":"H. Huang, Li Jiang, Yiyun Yao, Zhong Zhang, Zhanshan Wang, R. Qi","doi":"10.3390/COATINGS11050599","DOIUrl":"https://doi.org/10.3390/COATINGS11050599","url":null,"abstract":"The laterally graded multilayer collimator is a vital part of a high-precision diffractometer. It is applied as condensing reflectors to convert divergent X-rays from laboratory X-ray sources into a parallel beam. The thickness of the multilayer film varies with the angle of incidence to guarantee every position on the mirror satisfies the Bragg reflection. In principle, the accuracy of the parameters of the sputtering conditions is essential for achieving a reliable result. In this paper, we proposed a precise method for the fabrication of the laterally graded multilayer based on a planetary motion magnetron sputtering system for film thickness control. This method uses the fast and slow particle model to obtain the particle transport process, and then combines it with the planetary motion magnetron sputtering system to establish the film thickness distribution model. Moreover, the parameters of the sputtering conditions in the model are derived from experimental inversion to improve accuracy. The revolution and rotation of the substrate holder during the final deposition process are achieved by the speed curve calculated according to the model. Measurement results from the X-ray reflection test (XRR) show that the thickness error of the laterally graded multilayer film, coated on a parabolic cylinder Si substrate, is less than 1%, demonstrating the effectiveness of the optimized method for obtaining accurate film thickness distribution.","PeriodicalId":22482,"journal":{"name":"THE Coatings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73817050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Recent Advances in Protective Coatings for Accident Tolerant Zr-Based Fuel Claddings 锆基耐事故燃料包壳保护涂层研究进展

THE Coatings Pub Date : 2021-05-09 DOI: 10.3390/COATINGS11050557

E. Kashkarov, B. Afornu, D. Sidelev, M. Krinitcyn, Veronica Gouws, A. Lider

引用次数: 47

Glossiness Evaluation of Coated Wood Surfaces as Function of Varnish Type and Exposure to Different Conditions 涂覆木材表面光泽度随清漆类型和暴露条件的变化

THE Coatings Pub Date : 2021-05-09 DOI: 10.3390/COATINGS11050558

E. Salca, T. Krystofiak, B. Lis, S. Hiziroglu

引用次数: 16

Design of Narrow-Band Absorber Based on Symmetric Silicon Grating and Research on Its Sensing Performance 基于对称硅光栅的窄带吸收器设计及其传感性能研究

THE Coatings Pub Date : 2021-05-08 DOI: 10.3390/COATINGS11050553

Miao Pan, H. Huang, Wenzhi Chen, Shuai-Nan Li, Qin Xie, Feng Xu, Dongwei Wei, Jun Fang, Baodian Fan, L. Cai

{"title":"Design of Narrow-Band Absorber Based on Symmetric Silicon Grating and Research on Its Sensing Performance","authors":"Miao Pan, H. Huang, Wenzhi Chen, Shuai-Nan Li, Qin Xie, Feng Xu, Dongwei Wei, Jun Fang, Baodian Fan, L. Cai","doi":"10.3390/COATINGS11050553","DOIUrl":"https://doi.org/10.3390/COATINGS11050553","url":null,"abstract":"In this paper, using the surface plasmon and Fabry–Perot (FP) cavity, the design of a symmetric silicon grating absorber is proposed. The time-domain finite difference method is used for simulation calculations. The basic unit structure is a dielectric grating composed of silicon dioxide, metal and silicon. Through the adjustment of geometric parameters, we have achieved the best of the symmetric silicon grating absorber. A narrowband absorption peak with an absorption rate greater than 99% is generated in the 3000–5000 nm optical band, and the wavelength of the absorption peak is λ = 3750 nm. The physical absorption mechanism is that silicon light generates surface plasmon waves under the interaction with incident light, and the electromagnetic field coupling of surface plasmon waves and light causes surface plasmon resonance, thereby exciting strong light response modulation. We also explore the influence of geometric parameters and polarization angle on the performance of silicon grating absorbers. Finally, we systematically study the refractive index sensitivity of these structures. These structures can be widely used in optical filtering, spectral sensing, gas detection and other fields.","PeriodicalId":22482,"journal":{"name":"THE Coatings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88541355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Impact of Water-Repellent Products on the Moisture Transport Properties and Mould Susceptibility of External Thermal Insulation Composite Systems 拒水剂对外保温复合材料系统水分传输性能和霉菌易感性的影响

THE Coatings Pub Date : 2021-05-08 DOI: 10.3390/COATINGS11050554

R. Roncon, G. Borsoi, J. Parracha, I. Flores-Colen, R. Veiga, L. Nunes

{"title":"Impact of Water-Repellent Products on the Moisture Transport Properties and Mould Susceptibility of External Thermal Insulation Composite Systems","authors":"R. Roncon, G. Borsoi, J. Parracha, I. Flores-Colen, R. Veiga, L. Nunes","doi":"10.3390/COATINGS11050554","DOIUrl":"https://doi.org/10.3390/COATINGS11050554","url":null,"abstract":"External Thermal Insulation Composite Systems (ETICS) are constructive solutions widely used to increase the thermal insulation in new and retrofitted buildings. However, these systems can present several anomalies due to their constant exposure to weathering agents and anthropic factors. Water is generally the major cause of degradation. Thus, the application of water-repellent products can minimize the appearance of anomalies and increase the durability of the systems. In this paper, acrylic-based and siloxane-based hydrophobic products were applied to ETICS, with the aim of assessing the compatibility, effectiveness, and durability of these products. The moisture transport properties and mould susceptibility were assessed through laboratory tests on untreated and treated specimens. The durability of the hydrophobic treatments was also evaluated through artificial aging tests (heat-cold and freeze-thaw cycles). Results show that the protection products generally decreased water absorption, slightly decreased the drying rate, and presented adequate water vapor permeability. After aging, the products still had reasonable effectiveness and, with one exception, improved the water vapor diffusion of the systems. Additionally, ETICS underwent an alteration in the finishing coat (possible modification of the porosity) due to the aging cycles. No clear linear correlation was found between the contact angle values and water absorption results, evidencing the influence of other factors related to the composition of the water-repellent products.","PeriodicalId":22482,"journal":{"name":"THE Coatings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80367372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11