Developing a facile strategy for high-efficiency mixture separating is highly necessary, especially for the purification of oily wastewater and the refinement of organic solvents. In this work, robust superhydrophobic meshes ([email protected]@SA) with ribbon-shaped coating and controllable pore size were prepared via the electrodeposition of laminated Zinc coating, further moisture etching and post-modification

In today's mobility applications, efficiency is a key requirement. While in conventional mobility, increased efficiency contributes to reduce greenhouse gas emissions, in e-mobility every increase in efficiency translates also directly into increased battery range, which in turn contributes to reduced CO2 emission. Therefore, different approaches like the reduction of lubricant viscosities and the

The current collectors play a key role in the stability, safety and performance of the lithium-ion batteries, so it is of significance to provide a strategy to modify conventional current collectors. Here we develop a graphite-like carbon (GLC) film to modify the copper/aluminum current collectors so as to improve the physical contact and interface characteristics between the current collector and

Residual stress is inevitably generated during thermal spraying and plays a significant role in the fracture mechanisms of thermal barrier coatings. In this study, a drop experiment was conducted using a molten paraffin to simulate and simplify the actual thermal spraying process. The variation of stress and strain during the solidification and the adhesion of the paraffin droplet impacted on a stainless-steel

Molybdenum disulfide (MoS2) is a widely applied solid lubricant due to its unique layered structure. However, low hardness and environmental sensitivity severely limit its practical application in industry. Here, MoSB films were deposited on Si (100) substrates by magnetron sputtering. The structure, mechanical and tribological properties showed a significant dependency on composition and chemical

A comprehensive model to predict the stress evolution in a multilayer coating during its use in solar receivers is proposed. The model takes into account residual stress in the coatings, thermal gradient in the structure and high temperature phenomena like oxide scale growth and creep relaxation. The numerical tool developed in this work can help to understand the complex interplay of these phenomena

The cavitation erosion damage of the materials in seawater is more severe than in freshwater due to the coupling effect of mechanical impact, instantaneous high temperature and seawater corrosion. This study reported that the ceramic/organic coating fabricated by the vacuum pressure impregnation epoxy resin into as-sprayed ceramic coating is introduced. The corrosion inhibition mechanism of the ceramic-based

An oxygen diffusion layer (ODL) was produced on a commercially pure titanium (CP-Ti) using atmospheric thermal oxidation at a temperature of 850 °C for 36 h. The ODL was then electrochemically anodized in a 1 M sulfuric acid solution at various voltages of 100, 150 and 175 V. SEM images showed a non-uniform anodized titanium oxide layer due to insufficient potential driving force under a voltage of

Thermal shock failure is the most common type occurring in service. The thermal shock life is overestimated and the failure process of thermal barrier coatings (TBCs) is still not clear due to lack of environmental simulator and the real-time detection methods. In this work, the damage evolution and failure mechanism of EB-PVD TBCs coated on a turbine vane under thermal shock is studied by acoustic

In this study, thermal chemical vapor deposition (CVD) method was utilized to fabricate carbon nanotubes (CNTs) using an Fe/Al catalyst. Plasma enhanced CVD (PECVD) was applied to coat CNTs surfaces with a hydrophobic poly(hexafluorobutyl acrylate) (PHFBA) thin film. Then pure CNT and surface-modified CNT (f-CNT) were used as nanofillers at 0.5–3 wt% in bisphenol-A (DGEBA) and phenolic novolac types

Rail cladding is a cost-effective approach for track maintenance and protection from rapid growth of mileage and Rolling Contact Fatigue (RCF) phenomenon. In this study, cladding layers are prepared on the surface of a U75V rail substrate using a plasma cladding approach with different substrate preheating temperatures. Preheating of the substrates creates an isothermal treatment for the cladding material

The Fe-based amorphous coatings were successfully prepared on the surface of Q235 carbon steel by detonation spraying process under different oxygen-fuel ratio (2.5, 2.0 and 1.7), and the resultant coatings were named as coating A, B and C. The macro-structure and corrosion behaviors of the coating were investigated in detail by potentiodynamic polarization and electrochemical impedance spectroscopy

In this work, the effect of thiourea on the initial stages of the Cu–Sn electrodeposition in the potential range of the underpotential deposition (UPD) of tin from the sulphate electrolyte was studied by linear sweep voltammetry. The mechanism of Cu–Sn alloy nucleation and growth was proposed based on the results of chronoamperometry, chronopotentiometry, and scanning electron microscopy. Thiourea

Cr2AlC coatings were synthesized by high power impulse magnetron sputtering (HiPIMS) from Cr2AlC compound target and subsequent thermal annealing in Ar atmosphere. The effect of HiPIMS duty cycle and substrate bias potential (UB) on the thin film composition were investigated. All initial Cr-Al-C coatings exhibit similar compositions close to the target stoichiometry, and dense and amorphous structure

In this study, the effects of local treatment temperature of ultrasonic nanocrystal surface modification (UNSM) on tribological behavior and corrosion resistance of stainless steel 316L produced by selective laser melting (SLM) were investigated. The as-printed samples were treated by UNSM at room and high temperatures (RT and HTs) and their strength, tribological behavior and corrosion resistance

By using scanning tunneling microscopy we found that Ni-containing islands grown on an Ag/Ge(111)-√3 × √3 surface adopt hexagonal (isotropic) shapes when the size is smaller than the critical value ~12.7 nm. Above this critical size islands either grow with no change in shape or become elongated (anisotropic). The shape transformation in the latter case indicates that even on an isotropic surface the

Microstructure, corrosion behaviour and thermal stability of ultrasonic shot peened AA7150 were studied in this work. After ultrasonic shot peening, exfoliation susceptibility decreases, intergranular corrosion is inhibited for both normal and transverse planes, pitting potential shifts to the positive direction. The enhanced localized corrosion resistance is attributed to the formation of equiaxed

Although layered Li[Ni0.5Co0.2Mn0.3]O2 (LNCM 523) is one of the most promising cathode materials for lithium-ion batteries, large capacity losses during charging and discharging, due to poor surface stability, have limited its application. Surface modifications can be effective at improving the electrochemical performance of cathode materials. In this study, an oligomer polymer, named LIVING, was synthesized

In this study, two types of SiCr coatings (named as SiCr-1 and SiCr-2) were fabricated on AISI 5140 steels by pack-cementation via different Si feedstocks, aiming to strengthen the steel surface and avoid the carbon-poor layer caused by chromizing. Phases, microstructure, and composition were characterized by X-ray diffraction technique (XRD), secondary electron imaging (SEI) and backscattering electron

Cold spraying is emerging as one of the versatile coating techniques applicable in vast variety of applications ranging from overlay coatings to structural repairs. Though variety of metals and their alloys have been successfully deposited using this technique, deposition of cermet with high volume percentage of carbide particulates is still challenging. Existing reports reveal that the deposition

This work is devoted to the study of microstructure, corrosion behavior, and deposition formation of ERNiCrMo-13 and NiCrBSi coatings in simulated coal-fired boiler environments. It was found that these coatings applied to TP347 boiler steel by means of arc spraying were comprised of Cr1.12Ni2.88 compound. The hot corrosion tests were performed in simulated flue gases and synthetic fly ashes at 900 °C

Zr-C thin films are grown on single-crystalline MgO(001) substrates via ultra-high vacuum dc magnetron sputtering of Zr target in 10 mTorr Ar-C2H4 gas mixtures with ethylene partial pressures (pC2H4) between 2 × 10−7 Torr and 2 × 10−4 Torr at substrate temperature Ts = 923 K and using pC2H4 = 2 × 10−6 Torr at 723 K ≤ Ts ≤ 1123 K. The as-deposited layer microstructure and composition are determined

Structure and magnetic properties of CoFe/MnN films with Ta underlayer and MnN/CoFe films with Ta toplayer through annealing at various temperatures (Tann = 300–450 °C) and then field cooling to room temperature at 1.5 kOe are studied. Different samples annealed at Tann below 400 °C mainly consist of θ-MnN(002) phase; with increasing Tann, stress relaxation and grain growth of MnN(002) takes place

A thick Al-Fe-Nb-Ni coating with 46% volume fraction of amorphous/nanocrystalline structure was prepared on the low carbon steel substrate through low-cost arc spraying and then post processed by the laser remelting. The evolution of the coating microstructure, micro-hardness and corrosion behavior was comprehensively studied. The porosity of the as-sprayed coatings was as low as 2%. However, the incorporation

MeV-ion microbeam using the capillary technique was home-developed based on the 1.7-MV tandem accelerator and beamline at Chiang Mai University. The system consisted of the capillary itself, a capillary holder, a holder swing mechanism, and a system support frame with a micrometer for vertical micro-adjustment. The glass capillaries had various sizes in a range of 10 – hundreds μm in the exit inner

A phosphating passivation is conducted on the surface of Al coated NdFeB magnets by a gaseous process. The surface morphology, structure and elemental compositions of the samples are characterized by X-ray diffraction, scanning electron microscopy and X-ray photoelectron spectroscopy, respectively. The anti-corrosion performances of the phosphating passivated Al/NdFeB magnets are analyzed by neutral

Cold spray (CS) coating technique is being studied as a potential solution for repairing aircraft Ti-6Al-4V components. This work is focused on the restoration of damaged components due to wear induced by vibrations. It is known that Ti-6Al-4V CS deposition shows difficulties to obtain non-porous coatings due to the high strength of this material, that is detrimental for wear resistance. In this sense

In this work, TiN, ZrN and HfN thin films fabricated using glancing angle deposition (GLAD) technique are studied both experimentally and by numerical simulations. The films (~1 μm thickness) were deposited by reactive magnetron sputtering at 0.3 Pa and 300 °C on Si substrates inclined at α = 85° with respect to the target. The film morphology and crystal structure were characterized by scanning electron

In the present study, laser cladding of Inconel 718/TiC metal matrix composite coating on SS 304 was carried out using a 2 kW Yb-Fiber laser by preplaced and blown powder method. The molten pool thermal history during the deposition process was monitored using an IR pyrometer and correlated with the evolution of microstructure. The effect of various process parameters, viz. laser power ‘P’ (400 W –

Titanium (Ti) and its alloys have been widely adopted as implant materials due to their satisfactory biocompatibility and favorable mechanical property. However, they usually show poor osteogenic ability, hindering its clinical application. Herein, Na2Ti3O7/SrTiO3 hybrid coatings on Ti were fabricated via one-step alkali etching in a mixed solution of NaOH and Sr(OH)2 to enhance its osteogenic activity

In the present work, CeO2 nanoparticles were extra added into NiTi nanocomposite coating to optimize the spatial microstructures and wear properties. Before adding CeO2 nanoparticles into NiTi nanocomposite coating, Ti microparticles distributed in forms of cluster in Ni deposits, leading to the spatial inhomogeneity of microstructures like local large grains and residual [200] fiber textures. Correspondingly

Tungsten Inert Gas (TIG) arcing is a surface modification process and can be used for some specific applications. In the present work, in-situ grown vanadium carbide particle coating was manufactured by initially applying the coating of finely ground vanadium and graphite powder on the steel substrate and subsequently fused the mixture by TIG arcing. Various reactions occurring in the fusion zone and

The limited choice of metallic alloys suitable for additive manufacturing restricts the possibilities for new design strategies and improved materials performance in demanding applications. We applied plasma electrolytic oxidation to improve the performance of 3D printed and cast AlSi12 alloy substrates. A silicate alkaline electrolyte and a combined current mode were used. Coatings were characterised

Gadolinia doped ceria (GDC) films have been deposited using reactive magnetron sputtering and the influence of the deposition parameters on the properties of the films has been investigated. The oxygen flow rate, the target-substrate distance and the radio frequency substrate bias have been varied and films were deposited with a relatively high power-normalized growth rate of 15–18 nm min−1 W−1 cm2

In the present study, optimization of various laser-processing parameters for the deposition of thick SiC coating on zircaloy-4 (Zry-4) tube is studied in view of the development of accident tolerant fuel clad material for current and future nuclear reactors with the enhanced safety. The SiC coatings are deposited using laser directed energy deposition (LDED). It is found to be quite challenging to

This manuscript presents the nature of interaction of energetic plasmoids, generated in the Gas Injection Magnetron Sputtering (GIMS) technique, with the surface of substrate or the coating–substrate system. We expected that the plasma generated by a dynamic injection of gas (GIMS) is better ionized than the plasma generated in stationary pressure in its standard range for magnetron sputtering. The

Electroless Ni plating is widely used for its properties such as wear resistance, uniform coating and excellent brazing and solderability. In electronic and mechatronic applications, the chemical composition of the Ni layer and its surface quality still remains elusive and improvisation of Ni layer surface quality is vital. This research work investigates the surface properties of Ni films subjected

The high-temperature oxidation resistance of Ti1-xSixN films with Si content varying in wide range, 0.13 ≤ x ≤ 0.91, is evaluated. Films are grown in Ar/N2 atmospheres using a hybrid high-power impulse and dc magnetron sputtering (HiPIMS/DCMS) configuration with Si target powered by HiPIMS and Ti target operated in DCMS mode. The substrate bias is synchronized to the Si+-rich portions of the HiPIMS

Biodegradable magnesium (Mg) and some of its alloys are expected to degrade in the human body in consort with the bone tissue healing process. However, the rapid corrosion rate of Mg and its alloys in the physiological environment hinder their applications as implant materials. In this study, we fabricated a double-layer Ca-P coating on the surface of WE43 Mg alloy with enhanced corrosion resistance

The electrochemical behavior, surface morphology characteristics, phase constitution and microstructure of electrodeposited ZnCo (~5 wt%) coatings with five different volume fractions of multi-walled carbon nanotubes (MWCNTs) are discussed. All the coatings contained a mixture of Zn and Zn10.63Co2.34 intermetallic phases the relative fraction of which was sensitive to the amount of the MWCNTs present

Increasing the deposition efficiency (DE) and consequently reducing the manufacturing costs has been always one of the central goals in thermal spraying. Hence, the effect of modifying various spraying parameters on DE has been widely investigated in the literature. However, there has not been a methodology so far to correlate the in-flight particle properties with their DE on the substrate locally

The sputter yield and discharge voltage of fourteen target materials (Al, Cr, Cu, Mg, Mo, Nb, Pb, Ta, Ti, V, W, Y, Zn, and Zr) have been measured during reactive sputtering in argon/oxygen mixtures. The obtained oxide sputter yields strongly differ from the published data based on ion beam experiments. A second observation is that based on the discharge voltage behavior observed during target oxidation

Coatings of aluminum and zinc were applied on two thermoplastic materials, ultra-high molecular weight polyethylene (PE) and polytetrafluoroethylene (PTFE), using twin wire-arc spray spraying. Samples were either smooth (Ra = 0.2 μm) or roughened by grit blasting (Ra = 1.6 μm). Before the start of spraying samples were kept at either room temperature or preheated to 55 °C for PE and 95 °C for PTFE

A promising new bond coat using CuAlNiCrFe high-entropy alloy was proposed in this paper. The difference in pre-oxidation conditions between the traditional thermal-sprayed MCrAlY bond coat and CuAlNiCrFe high-entropy alloy bond coat deposited using high-speed laser cladding was investigated. The result confirmed that the CuAlNiCrFe high-entropy alloy bond coat deposited using high-speed laser cladding

Disbonding and delamination of Stellite-hardfaced coatings from high-temperature valves have presented a major challenge to the power generation industry. In order to study how the interfacial microstructure of Stellite-hardfaced coatings might damage valve integrity during service, a series of aging experiments were conducted at temperatures ranging from 550 to 650 °C over three durations within a

It is known that residual stress is the main factor causing the final failure of thermal barrier coatings (TBCs). However, it is still unclear how the stress governs the cracking sequence. In this paper, atmospheric plasma-sprayed (APS) 8 wt% yttria-stabilized zirconia (YSZ) TBCs were subjected to isothermal heat treatment at 1050 °C for different time. The cracking evolution and the underlying mechanical

Single-phase nanocrystalline hydrogen-containing titanium zirconium carbide thin films and hydrogen-containing nanocomposite thin films consisting of a nanocrystalline hydrogen-containing titanium zirconium carbide phase in combination with an amorphous hydrogen-containing carbon network, (Ti1-xZrx)C1-δ:H/a-C:H, were deposited by low temperature reactive high power impulse magnetron sputtering (HiPIMS)