ABSTRACT Zn-Al film was prepared on biaxially oriented polypropylene (BOPP) substrate via vacuum thermal evaporation. The microstructure and its correlation with sheet resistance of Zn-Al film were explored systematically. The results showed that the macromorphology of Zn-Al film was closely related to the surface topography of BOPP substrate. XRD and SEM analysis indicated that Zn-Al film displayed

ABSTRACT To improve the wear resistance of AA6061 aluminium alloy, Fe-based composite coatings were prepared by laser surface alloying with Fe–B4C or Fe–B4C–Ti mixed powders. Microstructures, phase compositions and wear properties were investigated. The results indicated that the coating fabricated with Fe–B4C was mainly composed of FeAl, Fe3Al, Fe4Al13, CrB, Cr2B, Cr23C6, Al4C3, (Fe, Cr) and α-Al

ABSTRACT In this study, ZrO2–Al2O3 composite ceramic coating toughened by ZrO2 nanorods through cathode plasma electrolytic deposition (CPED) was prepared on Al–Si alloy substrate. The microstructure, heat insulation performance, and fracture toughness of the coatings were investigated with SEM, XRD, heat insulation tests, and tensile tests. The ZrO2 nanorods prepared by the hydrothermal method consist

ABSTRACT The experimental work on the self-cleaned zirconia coatings prepared using a co-precursor sol–gel method is presented here. The zirconia coatings were synthesised using zirconium n-propoxide (ZrPro) precursor and different organosilanes such as trimethyl cholorosilane (TMCS), hexamethyl disilzane (HMDZ) and perfluorodecyl triethoxy silane (FDTES) as co-precursors. The organosilanes have a

ABSTRACT Polyester fabric is widely used in our daily life, while it is highly flammable and easy to produce melt dripping during combustion causing huge potential hazards. Endowing polyester fabric with flame retardancy and dripping-resistance simultaneously is still a difficulty. Eco-friendly polyethylenimine/phytic acid (PEI/PA) coating on polyester fabric was fabricated in this study. The limiting

ABSTRACT Since the bioactive surface needs hydrophilic coating; and the high corrosion resistance needs a hydrophobic one, it is a challenge to design a bioactive film that exhibits corrosion protection. In this article, Hexa-Methylene Diamine Tetra-Methylene Phosphonic Acid (HMDTMPA) film was deposited on Mg substrate at different heat treatment conditions. The heat-treated films at 150°C showed remarkable

ABSTRACT Superhydrophobic surfaces – driven from natural biology – are being increasingly studied in many engineering fields. This study fabricated hydrophobic AAO/Ni coatings and superhydrophobic AAO/Ni/Ni coatings based on aluminium alloy substrates. The surface morphologies of prepared samples were systematically examined, and the compositional analysis was conducted. Furthermore, the corrosion

ABSTRACT The dynamic water contact performances and drying processes of two commercially available superhydrophilic coatings, QS200, used for glass antifogging, and QS3100, used for the self-cleaning of solar photovoltage panels, both with static contact angles near zero, have been evaluated. We investigated the drying behaviours of both statically and dynamically deposited water droplets on these

ABSTRACT The work aims to assess the influence of tool electrode material while surface modification of Ti-alloy through the micro-electrical discharge coating (μEDC) process. Brass and tungsten micro-tool (800 μm)are chosen based on their mechanical, thermal, and electrical properties to conduct the experiments at different coating criteria such as duty cycle, voltage, and powder (tungsten disulphide)

ABSTRACT This work successfully prepared a hydroxyapatite (HA)-containing self-sealing micro-arc oxidation (MAO) coating on pure Mg by adding HA particles into a Ca–P based electrolyte solution. Biodegradation behaviour of the obtained coatings was studied. The HA particles transformed the porous MAO coating into a self-sealing coating. The presence of different melting point MAO coating constituents

ABSTRACT A simple, accurate and rapid construction method of superhydrophobic fabric coating was provided. Firstly, a homogeneous solution was obtained by dissolving a certain amount of silicone resin and polymethyl methacrylate (PMMA) in N,N-Dimethylformamide (DMF). Then, a nanocrystals solution system was made by adding ethanol to the homogeneous solution to induce the crystallization of PMMA. Finally

ABSTRACT The rapid increase in the world population has drastically increased the generation of organic solid waste. Currently, this is disposed of mainly in landfills, leading to environmental pollution that necessitates the development of new treatment technologies. Catalytic wet oxidation has been proven to be an effective technology for solid waste destruction and the elimination of hazardous organic

ABSTRACT In this study, three different types of stainless steels, AISI 304, AISI 420, and AISI 430 were pack borided under 850 °C–925 °C–1000 °C for 2, 4, and 6 h, respectively. Morphologies of coating were investigated by optical and scanning electron microscope (SEM). The maximum layer hardness was determined to be 1736 HV0.05, 1659 HV0.05, and 1572 HV0.05 for AISI 304, AISI 420, and AISI 430, respectively

ABSTRACT A silica/epoxy hydrophobic coating (water contact angel (WCA) = 130°) was prepared on a glass substrate and further treated in a low-temperature plasma (PL) condition, which surprisingly resulted in an amphiphilic surface (best WCA = 3.5°, best oil CA = 5°) with excellent surface stability and without decay along with the time. We systematically studied the influences of two working gases

ABSTRACT In this study, we fabricated a super-hydrophilic (θ < 5°) hierarchical reticular porous structure on the surface of Ti–24Nb–4Zr–8Sn (Ti2448) by combining sandblasting, dual acid-etching, and alkali thermal treatment. The super-hydrophilic hierarchical structure on the surface contained fine well-distributed nanopores with random microscale structures, leading to extremely high surface hydrophilicity

ABSTRACT In this study, for the first time, ZrC coating was deposited on SiC coated graphite by optimized atmospheric plasma spray (i.e. solid shielding shrouded plasma spray (SSPS)) method. Then SSPS-ZrC coatings were compared with the atmospheric plasma spray APS-ZrC coatings. The results indicated that the the SSPS-ZrC coated sample had lower porosity compared with APS-ZrC coating (3% and 7.5% respectively)

(2021). Statement of Retraction: Preparation of self-healing anti-corrosion coatings using oil-filled ethyl cellulose nanocapsules. Surface Engineering. Ahead of Print.

ABSTRACT In this study, self-organised microspiked surface structures were fabricated with a picosecond laser source on austenite stainless steel. The laser-processed surface structures were subjected to low-temperature annealing for chemical modification to reduce the surface free energy of the metal oxides formed due to laser processing. The low-temperature treatment accelerates the adsorption of

ABSTRACT Hierarchical Cu2O/CuO/TiO2 hollow nanostructured films with petal effect (high superhydrophobicity and high adhesion to water droplets) have been synthesized through a facile solvothermal approach, and the wettability of the product films was studied. The protocol was carefully designed for the preparation of the multi-scaled nanostructures. Cu(OH)2 nanorod arrays were used as precursors,

ABSTRACT This experimental work deals with the measurement of the contact angle of the nanocomposites made of phase change material (PCM) OM 08 and multi-wall carbon nanotubes (MWCNTs) with different volume concentrations namely, 0.05%, 0.1%, 0.3%, 0.5%. Two different types of copper substrate, namely copper plate with and without shot blasting, were used in this study. It was identified that the droplet

ABSTRACT In this study, the (FeMnCrNiCo + 20%TiC) laser cladding layer was re-treated through multiple-pass in-situ laser remelting. Optical microscopy, scanning electron microscopy, and X-ray diffraction were used to analyse the evolution of microstructures and phases before and after the in-situ laser remelting processes. The micro-hardness and wear resistance of the composite coatings were systematically

ABSTRACT In this work, a SnO2-doped TiO2 film was rapidly prepared as lithium-ion battery anode by the one-step plasma electrolytic oxidation process on Ti foil. The whole process was carried out in an aqueous solution at room temperature and under atmospheric pressure without any heating or post-treatment. The prepared TiO2/SnO2 composite film exhibited a porous structure with large amounts of channels

ABSTRACT In this research, the high-duration ablation resistance of SiC-gradient coating was investigated. SiC coating was prepared on graphite by reactive melt infiltration method at 1873 K under the argon atmosphere. Formation of the SiC layer with gradient distribution of Si and C elements was confirmed by X-ray diffraction patterns and scanning electron microscope micrographs. The results of the

(2020). Correction. Surface Engineering. Ahead of Print.

ABSTRACT In this study, La2(Zr0.7Ce0.3)2O7 nanostructured coatings were applied by plasma spraying of the nanostructured agglomerates. Initial nanostructured precursor, precursors calcined at 400°C, 600°C and 900°C with La2(Zr0.7Ce0.3)2O7 compound were used to apply top coat layer of the coatings. XRD results and microstructural observations indicated that a uniform distribution of LC phase in LZ matrix

ABSTRACT Mechanically robust superhydrophobic (SHP) and icephobic performances are highly needed for an anti-icing surface in practical applications. Here, a SHP coating is prepared on the aluminium (Al) substrate using hydrothermal reaction and subsequent modification of hexadecyltrimethoxysilane, showing a water contact angle larger than 158° and a sliding angle (SA) less than 5°. This SHP coating

ABSTRACT In this research, YSZ-Alumina top coat was deposited on the Hastelloy substrate with a NiCrAlY bond coat by Atmospheric plasma spraying process. YSZ-10 wt-% Al2O3 composite coatings with pyrolysed and un-pyrolysed Al2O3 powder were deposited. High temperature oxidation and thermal shock resistance of both coatings were investigated. Thermal shock test results showed that the lifetime of the

ABSTRACT Water jet peening is a surface modification technique which can introduce compressive residual stresses beneath the surface of the engineering components. In this paper, the effects of water jet peening process, in the absence of abrasive materials on residual stresses, surface roughness, and fatigue life of the aluminium alloy 7020 samples were numerically and experimentally investigated

ABSTRACT Hydrogenated diamond-like carbon (DLC: H) films were successfully fabricated on the surface of 13Cr super martensitic stainless steel by high-pulsed power chemical vapour deposition. The mechanical and tribological properties of the films related to the substrate bias voltages were investigated. The results showed that the surface hardness and tribological properties of the substrate after

ABSTRACT In recent research, a method for manufacturing superhydrophobic metal surfaces using pulse laser texturing has been developed. After laser texturing, a sample can be converted into a superhydrophobic surface by aging the sample for several weeks in ambient air. Research on this method is currently focused on metal surfaces, such as aluminium, copper and so on. There are few studies of iron

ABSTRACT In this study, the WC reinforced Fe-based composite coatings with various CeO2 contents were fabricated on the H13 hot-working die steel by laser cladding. The high-temperature wear resistance of composite coatings was analysed by friction-abrasion testing machine, white light interferometer, and scanning electron microscope (SEM). The microstructure and microhardness were investigated by

ABSTRACT The cavitation erosion resistance of high-entropy FeCoCrNiMoXB0.2(X = 0, 0.5, 1), coatings cladded by laser was studied. The test was processed by a magnetostrictive cavitation method in both distilled water and 3.5 wt-% NaCl solution. It was observed that the mass-loss rate of the coatings rarely increased or even decreased in the first few hours. This study verified that the formation of

ABSTRACT This study aimed to control the degradation of Mg–Zn–Ca alloy and improve its biocompatibility using a biodegradable Zn-modified calcium phosphate coating via dual-pulse electrodeposition. The formation mode and process of the coating were studied herein. Scanning electron microscopy revealed that the coating particles were compactly and neatly packed, and X-ray diffraction analysis, transmission

ABSTRACT Magnesium (Mg) alloys attract a lot of attention owing to their superior properties, while the poor corrosion resistance significantly restricts their extensive applications in practice. The development of a superhydrophobic coating can effectively decrease the contact area between corrosive solutions and the Mg substrate, consequently providing corrosion protection. Herein, a facile approach

ABSTRACT The present pandemic coronavirus disease 2019 (COVID-19) becomes a serious concern of global health threat which is elicited by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). This paper focuses on a hitherto untouched material’s engineering issue in human scientific fight against the well-known COVID-19. We show here the challenges and possibilities in engineering the surface

ABSTRACT Solid/liquid interface drag reduction is a hot topic and it is of great significance to reduce energy consumption in industrial field. Herein, we prepare a slippery liquid-infused porous surface (SLIPS) with excellent self-healing and super-slippery properties. Through adjusting the density of Zn-Al LDH films on aluminium foil, the ability of rough surface to capture lubricant oil is studied

ABSTRACT The thick titanium nitrides coating was fabricated on LZ91 alloy by surface mechanical nano-alloying (SMNAT) combined with gas nitriding. Experimental results showed that a nanostructured titanium coating with thickness of 50–80 μm was formed on surface of LZ91 alloy by SMNAT with pure titanium powders for 30 min. By adding of the aluminium powders into titanium powders during the SMNAT, a

ABSTRACT Five hard-phase aluminium-based composite coating types with volume fractions of 12.5%, 25%, 37.5%, and 50%, respectively, were used. The addition of a large hard phase enhanced the coating densification. An increase in hard-phase content in the coating distributes more uniformly, but when the hard-phase content is too high, the hard phase is more likely to agglomerate, which decreases the

ABSTRACT In situ synthesized TiN and TiB reinforced metal matrix composite coating was fabricated on Ti-55511 by laser cladding with Ti-55511/BN powder mixture (2 wt-% BN). Results indicated that coating was mainly composed of TiB, dendrite TiN and α phase. The diameter of small-sized hollow tubular TiB was less than 400 nm, and the width of the other rod-shaped TiB was less than 1 μm. The flower-like

ABSTRACT In this research, the microstructure and optical behaviour of a novel Al2O3–Ag composite coating have been investigated. The composite films were synthesised by the addition of silver nanoparticles into the anodizing electrolyte solution with the concentration of 100–1500 mg per 600 mL. SEM, EDS, XRD and Raman tests were employed to study the microstructure of the coatings. The optical properties

ABSTRACT The purpose of this work is to investigate the microstructure and mechanical properties of a novel WC-reinforced Co matrix composite coating synthesized by pulse electrodeposition technique with various duty cycles. The growth and wear mechanisms for Co–WC composite coating were explored. The microstructure, morphologies and composition of the composite coating were characterized by X-ray

ABSTRACT In coating, especially in the arc spraying process, oxidation leads to the deterioration of wear and corrosion-resistant properties. In the present work, an effective shrouding arrangement is designed and introduced to arc spray gun to reduce oxidation content in the coating. The effect of shrouding on microstructural and coating properties is analysed by the characterization techniques, such

ABSTRACT Supersaturated carbon alloying layer was prepared on the surface of 15-5PH stainless steel using laser surface alloying technology with carbon powders as alloying materials. XRD, optical microscope, scanning electron microscope, microhardness test and wear test were performed to characterize the microstructure and wear resistance of substrate and alloying layer. Results showed that the alloying

ABSTRACT The aim of this article is to investigate the corrosion behaviours of arc-sprayed AlSiFeNiRE amorphous/nanocrystalline coating under different solution temperatures and different solution flow velocities. All tests were measured by CHI660E electrochemical workstation. The microstructure of the coating was characterized by scanning electron microscope (SEM) and the phase structure of the coating

ABSTRACT In arc-ion plating, the droplets ejected from the cathodic target inevitably contaminate the coating with macro-particles (MPs), causing defects that usually reduce the mechanical properties of the coating. Normally, MP formation is suppressed by electromagnetic filtration technology. To investigate the influence of the electromagnetic field on the structure and mechanical properties of coatings

(2020). Editorial. Surface Engineering: Vol. 36, Special Issue: Coating production and surface engineering of carbide-based composites, Edited by Nuria Cinca, pp. 1129-1131.

ABSTRACT The heat dissipation efficiency of the radiator is of great significance to the reliability of the power transformer system. However, traditional coatings on the radiator are designed to improve the corrosion resistance of radiators, which usually have a lower thermal conductivity. In this work, the thermal properties of graphene-doped coating have been studied using a combination of electrical

ABSTRACT In this research, TiN films were deposited on the SS316L substrate by cathodic arc evaporation technique, to use as bipolar plates in proton exchange membrane fuel cells. The effect of substrate surface roughness and film thickness on the interfacial contact resistance and corrosion properties of the TiN films was investigated. Characterization of deposited films was performed by XRD, XRF

ABSTRACT Tungsten-Titanium-Nitrogen (W-Ti-N) thin film, 1.1 μm in thickness, was deposited on Aluminium-Silicon (Al–Si) and stainless steel substrates using the Physical Vapour Deposition (PVD) sputtering system in order to study a new way to improve the tribological properties on engines piston skirts. Tribological test results showed very interesting friction coefficient and wear rates compared to

ABSTRACT The commensurate contact condition plays a key role in the directional friction properties and wear performance when two surfaces slide against each other. An experimental study on bidirectional friction and wear control by nanosecond pulsed laser selective texturing of grooves on AISI 304 stainless steel (SS) and TA2 titanium (Ti) surfaces of the sliding components was proposed. The influence

ABSTRACT Laser-assisted wire cladding has emerged as a popular method for the surface modification and repair of components as it provides cleaner processing environments, reduced costs with higher material deposition rates, and better surface finish. However, the high capital cost of laser cladding systems can be detrimental to their adoption in industry. This work presents a favourable option for

In order to explore the main factors influencing the thermal conductivity of the cold sprayed Cu coating, four sets of Cu coatings with different deformation and annealing conditions were prepared by high/middle pressure cold spray systems followed by the annealing procedure. Microstructure and recrystallization analysis of the coatings were characterized by SEM and EBSD. Relationship of the thermal

The NiCoCrAlYTa coating deposited on Ni-based superalloy using arc ion plating (AIP) technology was subjected to isothermal oxidation in air at 1050°C for up to 200 h. The microstructure, oxides scale thickness, growth stress and interface diffusion behaviour were characterized by using scanning electron microscopy, X-ray diffraction, electron probe micro-analyser and photo-stimulated luminescence

Transparent co-doped TiO2 thin films have been fabricated by sol-gel dip-coating. The doping is achieved using low concentrations of neodymium (Nd), silver (Ag), and copper (Cu). A significant effect of doping is noticed on the morphology and optical properties of thin films. XRD analysis confirms the formation of a pure anatase phase with a deterioration of the crystallinity upon doping. The co-doped

Nanocrystalline-strengthened surface layer significantly improves the surface hardness and wear resistance of Cu or Cu alloys and avoids the reduction of conductivity. However, the poor thermal stability limits its industrial application. Herein, a series of Cu-Ni-Al films were prepared by radio frequency magnetron sputtering, which shows γ (∼20 nm) + γ′΄ phase (∼10 nm) dual nanostructure. Compared

In this study, a novel micro-nano hierarchically structured fluoridated hydroxyapatite (FHAp) coating on AZ31B substrate was successfully synthesized via a simple one-step electrochemical deposition method. And the formulation of the electrodeposition solution is simple and environment-friendly without any harmful additives. The FHAp coating consists of a large amount of nanorods and some micro-structured

Zinc–Nickel monolayer (single layer) and compositionally modulated multilayer alloy coatings were developed on to mild steel from acidic sulphate bath; and their corrosion performance were studied using potentiodynamic polarization and electrochemical impedance spectroscopy methods. The coating layers were formed galvanostatically by single bath technique, using square current pulses and triangular

To enhance the mechanical properties of Ni–WC coatings, the carbon nanotubes were used as reinforced materials by laser cladding. Optical microscopy (OM), scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD) were used to investigate the effect of CNTs content on the phase composition and microstructure. The microhardness and wear resistance were measured

In this study, thermal barrier coatings with different porosities were prepared using 8 wt-% yttria-stabilized zirconia by atmospheric plasma spray on a superalloy substrate. The porosity of the ceramic coating was increased by modulating the primary gas flow rate and the secondary gas flow rate. The elastic modulus and fracture toughness of the coatings were measured by the indentation method, and

Ti–Al–Mo–N composite films with different molybdenum content were deposited by reactive magnetron sputtering. The results showed that the films consisted of fcc-(Ti, Al, Mo) N substitutional solid solution within 8.2 at.-% Mo. The films consisted of two phases which were fcc-(Ti, Al, Mo) N substitutional solid solution and fcc-Mo2N at 27.7–49.4 at.-% Mo. The hardness increased slowly at 0–27.7 at.-%