Article
Materials Science, Coatings & Films
F. Geramipour, S. M. Mousavi Khoei, H. Shooshtari Gugtapeh
Summary: The research discovered that applying pulse electrodeposition with a triangular waveform to Ni-Cu alloy coatings resulted in the best corrosion resistance, while using a ramp waveform led to the lowest surface roughness and grain size. Additionally, the corrosion resistance of the Ni-Cu alloy coatings was found to depend significantly on the molar fraction of Cu in solid solution and the crystallographic orientation, with the highest corrosion resistance associated with the largest molar fraction of Cu in solid solution and growth of grains at (111) orientation.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Engineering, Civil
Agnieszka Bigos, Monika Bugajska, Izabella Kwiecien, Marta Janusz-Skuza, Maciej Szczerba, Piotr Ozga, Anna Wierzbicka-Miernik, Marcin Dyner, Andrzej Misztela, Aneta Dyner, Joanna Wojewoda-Budka
Summary: Copper coatings are widely used for their decorative, protective, and antimicrobial properties. This study focuses on electrodepositing uniform copper coatings on steel and nickel substrates commonly used in surgical instruments, using a non-cyanide electrolyte solution. The effect of different substrate finishes on the coating surface formation was investigated, and the microstructural properties of the substrates and coatings were analyzed. The results show that the copper layers adhere well to the substrates and have a nanocrystalline structure, with the average crystallite size of 30 nm.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Carolina da Silva Lopes, Carlos Alberto Della Rovere, Isabel Cristina Rigoli, Claudia Lisiane Fanezi Da Rocha, Carlos Alberto Caldas De Souza
Summary: Zn-soybean nanocrystal composite coating was produced through electrodeposition, and the effect of nanocrystal addition on the coating characteristics was studied. The presence of soybean nanocrystal reduces the hardness, but increases the corrosion resistance of the coating.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Coatings & Films
Zhongquan Zhang, Leyu Dai, Yibiao Yin, Zhao Xu, Yin Lv, Zhiqun Liao, Guoying Wei, Fengping Zhong, Meng Yuan
Summary: Al2O3 nanoparticles incorporated NiCoW ternary alloy coatings were synthesized by direct current electrode-position from sulphate-citrate electrolyte. The influence of applied current density and electrolyte composition on the evolution of surface morphology, element composition, microstructure, microhardness and sliding wear behavior of the as-deposited coatings was investigated. The as-deposited coatings exhibit colony surface morphology and the inter-colony boundaries lead a leaf vein-like cross-sectional structure. The composition of the as-deposited coatings is controlled by the induced co-deposition mechanism and the competition among the reductions of Ni, Co, Ni-W and Co-W. The as-deposited coatings change from crystalline to amorphous structure with the decrease of Ni content in coatings and the critical Ni content for the transformation is about 40 at.%. The incorporation of Al2O3 nanoparticles leads to a little increase of microhardness, degrades adhesive wear and oxidation wear, then significantly improve wear resistance. Variations in electrodeposition conditions lead the as-deposited coatings with different wear behavior, including abrasive wear, adhesive wear and oxidation wear, accompanying with plastic deformation. An attempt is made to establish the relationship between the electro-deposition conditions and wear behavior.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Ramesh Sooryanarayana Bhat, Manjunatha Krishna Balakrishna, Poornesh Parthasarathy, Ampar Chitharanjan Hegde
Summary: Single-layer and multilayer alloy deposits were electroplated onto a mild steel substrate, consisting of Zn and Fe alloys with different compositions. The corrosion resistance of these deposits was evaluated using potentiodynamic polarization method, while their surface morphology, crystal structure, and Fe content were characterized using scanning electron microscopy, X-ray diffraction, colorimetry, and energy-dispersive X-ray spectroscopy, respectively. The microhardness of the coatings was measured using a Vickers indenter. It was found that the Zn-Fe multilayer coatings showed significantly improved corrosion resistance compared to the single-layer coating, making them crucial for the automotive industry and steel-based vehicle parts.
Article
Chemistry, Multidisciplinary
Tatiana I. Zubar, Tatsiana I. Usovich, Daria I. Tishkevich, Oleg D. Kanafyev, Vladimir A. Fedkin, Anna N. Kotelnikova, Maria I. Panasyuk, Alexander S. Kurochka, Alexander V. Nuriev, Abubakr M. Idris, Mayeen U. Khandaker, Sergei V. Trukhanov, Valery M. Fedosyuk, Alex V. Trukhanov
Summary: NiFe films with a composition gradient are of great interest for their unique functional properties. The anomaly concerning the compositional gradient formed near the substrate in electrolytically deposited binary and ternary iron-containing alloys has been explained, and a clear relationship between the structure and surface properties of the substrate, the initially formed NiFe layers and the film composition gradient has been found.
Article
Chemistry, Physical
Zhiyi Rong, Chaohui Wang, You Wang, Meiling Dong, Yuan You, Jianing Wang, Huinan Liu, Jiaqi Liu, Yuhang Wang, Zhongyu Zhu
Summary: FeCoNiCrX (X=Mn, Al) high-entropy alloy (HEA) coatings were successfully prepared onto a copper substrate by electrodeposition method. The as-prepared HEA coatings exhibited a simple crystal structure and showed superior hardness, wear resistance, and corrosion resistance compared to the substrate.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Chemistry, Physical
Fatemeh Jafari Afshar, Gholam Reza Khayati
Summary: Brass alloys are widely used in various industries, but they lack corrosion resistance in corrosive environments. Efforts have been made to utilize the superhydrophobic properties in the industry to solve the economic and environmental consequences of brass alloy corrosion. This paper presents a review of superhydrophobic coatings on brass alloys reported in articles. Models used to evaluate the superhydrophobic properties and methods for preparing samples for laboratory operations are discussed comprehensively. Different methods for increasing surface roughness and reducing surface energy are also examined.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Mechanical
Pao-Chang Huang, Kung-Hsu Hou, Jia-Jun Hong, Meng-Hung Lin, Gao-Liang Wang
Summary: Control of SiC particle content and hardness results in Ni-SiC composite coatings with lower friction coefficients and wear rates. In a lubrication environment, an appropriate SiC particle content can lead to better wear performance.
Article
Materials Science, Multidisciplinary
Le Zhao, Meng Yuan, Ze Fan, Zhongquan Zhang, Guoying Wei
Summary: The temperature induced wear mechanism transition of electrodeposited Ni-Co-W alloy coatings has been investigated. The wear resistance of the coatings is enhanced at high temperature, and the wear mechanism changes from abrasive wear to mild oxidative wear.
Article
Chemistry, Multidisciplinary
Jiaojiao Zhang, Xia Zhao, Jinfei Wei, Bucheng Li, Junping Zhang
Summary: The study introduces a superhydrophobic self-healing coating with photothermal chemical composition and microstructure for the corrosion protection of magnesium alloy. The coating exhibits good superhydrophobicity, photothermal effect, and corrosion resistance, and demonstrates excellent self-healing capability in response to chemical and microstructure damage.
Article
Chemistry, Analytical
Ya Tian, Liwen Ma, Xiaoli Xi, Zuoren Nie
Summary: In this study, Co-Mo-Ni-W alloy coatings were co-electrodeposited on a copper metallic substrate using electrolytes containing different systems of complexing agents. The addition of different complexing agents resulted in changes in the deposition potential and hardness of the coatings, as well as the Mo and W content in the coatings.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Yuxin Wang, Linlin Guan, Zhen He, Shengping Zhang, Harshpreet Singh, Muhammad Dilawer Hayat, Caizhen Yao
Summary: This study comprehensively investigated the pretreatment of zincating and anodizing on 6061 aluminum alloy, and their influence on electrodeposited Ni-P coatings. Anodized Ni-P coatings showed the best performance, while zincated Ni-P coatings suffered severe wear damage.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Coatings & Films
Pao-Chang Huang, Chih-Cheng Chou, Li-Shan Hsu
Summary: This study investigates the effect of electrodeposition parameters on Ni-W alloy coatings, determining optimal conditions for increased wear and friction resistance on piston rings. Results show that Ni-40.6 wt%W alloy exhibits improved mechanical and tribological properties compared to hard chromium coatings. The resistance of Ni-40.6 wt%W alloy coatings to wear and scratching on piston rings is confirmed through engine testing.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Coatings & Films
Yan Chen, Zeyu Cai, Heng Li, Guixun Sun, Liang Zhao, Shuang Han, Jian An, Jianshe Lian
Summary: NiCo alloy coatings with hierarchical nanostructures and embedded nano-twins, twin-stacking fault networks and/or martensitic bundle architectures were prepared on low-carbon steel substrate by varying Co content. The nano-mechanical behaviors and dry-sliding tribological properties were systematically investigated. The presence of intersecting architectures considerably increased the hardness of the coatings, while the TRIP effect led to a deviation from Archard scaling during dry-sliding. The optimized wear resistance was discussed based on both the hardness and TRIP effect.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Kata Berkesi, predrag M. Zivkovic, Nevenka Elezovic, Uros Lacnjevac, Evangelos Hristoforou, Nebojsa D. Nikolic
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2019)
Article
Electrochemistry
Nebojsa D. Nikolic, Predrag M. Zivkovic, Nevenka Elezovic, Uros Lacnjevac
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2020)
Article
Electrochemistry
N. R. Elezovic, P. Zabinski, U. C. Lacnjevac, M. N. Krstajic Pajic, V. D. Jovic
Summary: Two types of iridium oxide films were investigated on a Ti-2 AlC substrate, showing that the anodically electrodeposited iridium oxide film is more active for the OER compared to the film prepared by cycling electrodeposited iridium layer, although both films exhibited insufficient stability.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2021)
Article
Chemistry, Physical
Daniel M. Mijailovic, Vuk V. Radmilovic, Uros C. Lacnjevac, Dusica B. Stojanovic, Vladimir D. Jovic, Velimir R. Radmilovic, Petar S. Uskokovic
APPLIED SURFACE SCIENCE
(2020)
Article
Chemistry, Analytical
Maja D. Obradovic, Bojana D. Balanc, Uros C. Lacnjevac, Snezana Lj. Gojkovic
Summary: Hydrated iridiumoxyhydroxide (IrOx) films were electrochemically deposited using constant anodic potentials and potential cycling protocols, revealing the presence of Ir(III)/Ir(IV) mixtures and enhanced uniformity and activity in films deposited by potential cycling. The analysis showed that the films deposited by potential cycling had a higher OER activity and better stability compared to films deposited at a constant anodic potential.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Electrochemistry
Sanja Stevanovic, Dusan Tripkovic, Aleksandra Gavrilovic-Wohlmuther, Jelena Rogan, Uros Lacnjevac, Vladislava Jovanovic
Summary: The PtSn/C catalyst shows better performance in CO tolerance and methanol oxidation reactions compared to PtSnO2/C catalyst, indicating the advantage of alloying Sn with Pt.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2021)
Article
Materials Science, Coatings & Films
Kristina Mojsilovic, Nenad Tadic, Uros Lacnjevac, Stevan Stojadinovic, Rastko Vasilic
Summary: This study discusses the growth of thin oxide coatings on aluminum substrate in water-based sodium tungstate electrolyte by plasma electrolytic oxidation (PEO) and experimentally illustrates it using a unique ultra-low duty cycle pulsed direct current (DC) power supply. Elements present in micro-discharges during PEO processing are identified using standard optical emission spectroscopy (OES) technique, and the obtained coatings are characterized with respect to their morphology, chemical composition, and phase composition. The coatings are found to be composed of Al, O, and W, with low roughness and porosity, and partial crystallization reveals the presence of WO3, W3O8, and gamma-Al2O3 crystalline phases.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Kristina Mojsilovic, Uros Lacnjevac, Srna Stojanovic, Ljiljana Damjanovic-Vasilic, Stevan Stojadinovic, Rastko Vasilic
Summary: This study utilized plasma electrolytic oxidation to prepare oxide coatings on aluminum, and characterized the coatings using various methods. The surface morphology and properties of the coatings showed significant changes with PEO processing time. Coatings containing Ce-loaded zeolites exhibited higher photocatalytic activity.
Article
Nanoscience & Nanotechnology
Mila Krstajic N. Pajic, Ana S. Dobrota, Anca Mazare, Sladana Durdic, Imgon Hwang, Natalia V. Skorodumova, Dragan Manojlovic, Rastko Vasilic, Igor A. Pasti, Patrik Schmuki, Uros Lacnjevac
Summary: This study reveals that the surface effects of hydrogenated TiO2 nanotube arrays can convert Os, an unexplored platinum group metal, into a highly active electrocatalyst for the hydrogen evolution reaction (HER). The optimized Os@TNT composite exhibits low overpotential and stable performance in acidic medium, offering new possibilities for the fabrication of cost-effective PGM-based catalysts.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Analytical
M. D. Obradovic, U. C. . Lacnjevac, V. V. Radmilovic, A. Gavrilovic-Wohlmuther, J. Kovac, J. R. Rogan, V. R. Radmilovic, S. Lj. Gojkovic
Summary: Two types of Cu-modified Pd catalysts, Cu@Pd/C and Pd-Cu/C, were prepared and studied for the ethanol oxidation reaction (EOR) in alkaline solution. The activity of the catalysts was enhanced by the intimate contact of Pd with Cu atoms, and the optimal atomic Pd:Cu ratio was found to be between 2:1 and 4:1. The Cu@Pd/C catalyst showed the highest activity under potentiodynamic conditions, while Pd-Cu/C was superior during the potentiostatic test. All bimetallic catalysts outperformed Pd/C in terms of mass activity. Pt/C exhibited higher EOR activity compared to Pd-based catalysts at low potentials, but with a significant decline over a 30-min potentiostatic stability test.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Daniel M. Mijailovic, Vuk V. Radmilovic, Uros C. Lacnjevac, Dusica B. Stojanovic, Karen C. Bustillo, Vladimir D. Jovic, Velimir R. Radmilovic, Petar S. Uskokovic
Summary: A simple two-step procedure was reported for fabricating tetragonal CoMn2O4 spinel nanocrystals on carbon fibers, demonstrating good electrochemical performance and long-term stability in an alkaline aqueous solution. The composite electrode exhibited high specific capacity and energy density, with excellent cycling stability in a symmetrical coin-cell device.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Physical
Uros Lacnjevac, Rastko Vasilic, Ana Dobrota, Sladana Durdic, Ondrej Tomanec, Radek Zboril, Shiva Mohajernia, Nhat Truong Nguyen, Natalia Skorodumova, Dragan Manojlovic, Nevenka Elezovic, Igor Pasti, Patrik Schmuki
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Biochemistry & Molecular Biology
Katarina Cvetanovic Zobenica, Uros Lacnjevac, Mihajlo Etinski, Dana Vasiljevic-Radovic, Dragomir Stanisavljev
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
(2019)
Article
Biochemistry & Molecular Biology
Richard Lincoln, Antonius T. M. Van Kessel, Wenzhou Zhang, Gonzalo Cosa
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
(2019)
Article
Materials Science, Ceramics
Nikola Tasic, Zorica Marinkovic Stanojevic, Zorica Brankovic, Milan Zunic, Uros Lacnjevac, Martina Gilic, Tatjana Novakovic, Goran Brankovic
PROCESSING AND APPLICATION OF CERAMICS
(2018)
