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Showing papers in "Applied Surface Science in 2007"


Journal ArticleDOI
TL;DR: In this article, the effect of the shifting of consecutive single vectors on the process of forming the first layer was studied and the optimal parameters of layer thickness and power input per unit speed for SLS/SLM were determined.

551 citations


Journal ArticleDOI
TL;DR: In this paper, the influence of EDM parameters on various aspects of the surface integrity of Ti6Al4V was explored by using scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive spectrograph (EDS), and hardness analysis.

386 citations


Journal ArticleDOI
TL;DR: In this paper, the geometric and electronic structures of the cerium oxide (CeO 2 )-titanium dioxide (TiO 2 ), mixed oxides were investigated by means of X-ray diffraction (XRD), high-resolution Xray photoelectron spectroscopy (XPS), and Raman Spectroscopy excited by 325 and 514.5 millimeters.

318 citations


Journal ArticleDOI
TL;DR: In this article, a high-resolution X-ray photoelectron (XP) spectroscopy of pure polycrystalline iron was used to determine the chemical composition and thickness of the surface thin film.

294 citations


Journal ArticleDOI
TL;DR: In this article, the influence of the manufacturing strategy on the internal structure and mechanical properties of the components manufactured by selective laser melting technology was analyzed, and the anisotropy of the internal structures and structural properties of fabricated objects were studied.

290 citations


Journal ArticleDOI
TL;DR: In this paper, the electrical and optical properties of al-doped ZnO thin films with post-deposition heating temperature were investigated and the preferred c-axis orientation along the (0-0-2) plane was enhanced with increasing postdeposition temperature and the surface of the films showed a uniform and nano-sized microstructure.

281 citations


Journal ArticleDOI
TL;DR: In this paper, the influence of the powder layer thickness on laser sintering/melting is studied for different laser beam velocity V (V = 1250-2000mm/s), defocalisation (−6 to 12mm), distance between two neighbour melted lines (so-called “vectors”) (20-40μm), vector length and temperature in the furnace.

281 citations


Journal ArticleDOI
TL;DR: In this paper, the use of activated carbon obtained from Euphorbia rigida for the removal of a basic textile dye, which is methylene blue, from aqueous solutions at various contact times, pHs and temperatures was investigated.

281 citations


Journal ArticleDOI
TL;DR: In this paper, the effect of surface modification with 3-aminopropyltriethoxysilane (APTES) and n-propyltriethyltrihexilanes (PTES) on photo-catalytic activity and UV-shielding ability of fine TiO2 particles were investigated.

270 citations


Journal ArticleDOI
TL;DR: A superhydrophobic complex coating for cotton fabrics based on silica nanoparticles and perfluorooctylated quaternary ammonium silane coupling agent (PFSC) was reported in this article.

269 citations


Journal ArticleDOI
TL;DR: In this article, the femtosecond laser surface treatment of titanium was performed in order to determine the potential of this technology for surface structuring of titanium implants, and they found that the femto-cond laser produces a large variety of nanostructures (nanopores, nanoprotrusions) with a size down to 20nm, multiple parallel grooved surface patterns with a period on the sub-micron level, microroughness in the range of 1-15μm with various configurations, smooth surface with smooth micro-inhomogeneities,

Journal ArticleDOI
Hongliang Ma1, J. Yang1, Ye Dai1, Yuelu Zhang1, Bo Lu1, Guohong Ma1 
TL;DR: In this paper, the phase transformation of rutile TiO 2 single crystal was observed and the anatase phase content increased to a constant with increasing of infrared femtosecond (fs) pulse laser irradiation time.

Journal ArticleDOI
TL;DR: In this article, a numerical model of coupled radiation and heat transfer is proposed to analyse the observed instability of the balling effect at high scanning velocities (above ∼20 cm/s for the present conditions) can be explained by the Plateau-Rayleigh capillary instability of a melt pool.

Journal ArticleDOI
TL;DR: The experimental results on the synthesis and physical properties of the ambient pressure dried hydrophobic silica aerogels in the presence of various surface modification (silylating) agents are presented in this article.

Journal ArticleDOI
TL;DR: In this article, the use of 4H-triazole derivatives for corrosion and dissolution protection of mild steel in normal hydrochloric acid solution was examined by means of weight loss and electrochemical techniques such as ac impedance measurements and polarisation curves.

Journal ArticleDOI
TL;DR: In this article, five types of capping agents: 3-aminopropyl trimethoxysilane (Am), tetraethyl orthosilicate (TEOS), mercaptosuccinic acid (Ms), 3-mercaptoprocessor-tricyclic acid (MTA), trimethoxide (TOC), and polyvinylpyrrolidone (Pv) were added at the first ZnO precipitation time to limit the particle growth.

Journal ArticleDOI
TL;DR: In this paper, the electron beam evaporation method is used to generate an indium tin oxide (ITO) thin film on a glass substrate at room temperature and the surface characteristics of this ITO thin film are then investigated by means of an AFM (atomic force microscopy) method.

Journal ArticleDOI
TL;DR: In this paper, the effect of dielectric liquid and electrode type on white layer structure in electric discharge machined surfaces has been studied in terms of retained austenite and residual stresses using X-ray diffraction method.

Journal ArticleDOI
TL;DR: In this article, the efficiency of two Schiff bases, 2-{[(4-methoxyphenyl)imino]methyl}phenol and 1-{ [(4mthoxymhenyl)-imino]-methyl}-2-naphthol, was investigated by Tafel extrapolation and linear polarization methods, which showed that these compounds act as good corrosion inhibitors especially at high concentrations.

Journal ArticleDOI
TL;DR: In this article, the formation of a passivation film (solid electrolyte interphase, SEI) at the surface of the negative electrode of full LiCoO 2 /graphite lithium-ion cells using different salts (LiBF 4, LiPF 6, LiTFSI, LiBETI) in carbonate solvents as electrolyte was investigated by X-ray photoelectron spectroscopy.

Journal ArticleDOI
TL;DR: In this article, single crystalline needle-shaped zinc oxide nanorods were synthesized via sonochemical methods using zinc acetate dihydrate and sodium hydroxide at room temperature.

Journal ArticleDOI
TL;DR: In this paper, two pre-treatments were studied for AZ31 Mg alloy substrates, consisting of immersion in cerium nitrate and lanthanum nitrate solutions for various immersion times.

Journal ArticleDOI
TL;DR: In this article, a high-resolution X-ray photoelectron spectroscopy (XPS) was used to characterize the properties of carbon nanotubes and showed that the treatment with nitric acid mainly resulted in the formation of carboxylic (COOR) and phenolic (C OR) groups and a higher amount of carbonyl (C O) groups.

Journal ArticleDOI
TL;DR: In this paper, the effect of the temperature on the corrosion behavior with addition of different concentrations of MMI was studied in the temperature range 30-60°C, where MMI is a mixed type inhibitor and the inhibition efficiency increases with the inhibitor concentration.

Journal ArticleDOI
TL;DR: In this paper, a polyvinylidene fluoride (PVDF)/poly(methyl methacrylate) (PMMA) blend was derived from a special procedure of casting semi-dilute solutions.

Journal ArticleDOI
TL;DR: In this paper, the inhibitive action of some thiadiazole derivatives, namely 2,5-bis(2-thienyl)-1,3,4-THIADIA (2-TTH), against the corrosion of mild steel in 0.5 m H 2 SO 4 solution has been investigated using weight loss measurements, Tafel polarisation and electrochemical impedance spectroscopy (EIS) techniques.

Journal ArticleDOI
TL;DR: In this paper, the effects of activation time on the pore properties depend on the KOH/MCMB ratio and activation time of the activated carbons, and the results showed that the activation time was positively associated with the surface area and pore volume.

Journal ArticleDOI
TL;DR: The mesoporous structure of the as-made samples was studied by small-angle X-ray diffraction, N 2 adsorption-desorption isothermal and transmission electron microscopy.

Journal ArticleDOI
TL;DR: In this paper, microarc oxidation coatings on AM60B magnesium alloy were prepared in silicate and phosphate electrolytes, and the structure, composition, mechanical property, tribological and corrosion resistant characteristics of the coatings were studied by scanning electron microscope (SEM), X-ray diffraction (XRD) and microhardness analyses, and by ball-on-disc friction and potentiodynamic corrosion testing.

Journal ArticleDOI
TL;DR: In this article, the formation of protective layers on copper, zinc and copper-zinc (Cu•10Zn and Cu•40Zn) alloys in chloride solution containing benzotriazole (BTAH), by use of electrochemical techniques, atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS).