Browsing by Subject "Coatings"
Now showing items 1-15 of 15
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Adaptive VN/Ag nanocomposite coatings with lubricious behavior from 25 to 1000 °c
(2010)A two-phase nanocomposite coating that consists of inclusions of silver in a vanadium nitride matrix (VN/Ag) was investigated as a potential adaptive coating with a reduced friction coefficient from 25 to 1000 °C. This ...
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Chiral Separations Using Polymeric Surfactants and Polyelectrolyte Multilayers in Open-Tubular Capillary Electrochromatography
(2003)In this study, fused-silica capillaries are modified using a polyelectrolyte multilayer (PEM) coating procedure in open-tubular capillary electrochromatography. The PEM coating was constructed in situ with alternating ...
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Comparative tribology studies of hard ceramic and composite metal-DLC coatings in sliding friction conditions
(1995)The design of anti-friction coatings able to perform well in different wear conditions without lubricants requires a combination of adequate hardness and toughness, good adhesion, a low friction coefficient and a low wear ...
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Effect of pigment dispersion on optical properties and durability of a TiO2 pigmented epoxy coating
(2009)The effect of pigment dispersion on (i) surface morphology and appearance, and (ii) the weathering durability of a TiO2 pigmented epoxy coating was investigated. The microstructure and dispersion of pigmented epoxy coatings ...
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Electron spectroscopic studies of nanocomposite PVD TiAlBN coatings
(2002)A range of TiAlBN coatings have been deposited by electron beam evaporation and the optimised composition exhibits a 150% improvement over single phase TiAlN coatings in drilling tests. The coatings have been analysed by ...
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Enantioseparations in open-tubular capillary electrochromatography: Recent advances and applications
(2016)This review highlights recent advances and applications in open-tubular capillary electrochromatography (OT-CEC) for enantioseparations during the last decade. Although extensive research has been conducted in the area of ...
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Microstructural and morphological effects on the tribological properties of electron enhanced magnetron sputtered hard coatings
(1995)X-ray diffraction measurements and scanning electron microscopy studies on close to stoichiometric titanium carbonitride [TiCxN(1 _x)] and carbon containing tungsten coatings produced in an electron enhanced unbalanced ...
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Nanostructural studies of PVD TiAlB coatings
(2006)TiAlB coatings with different compositions were deposited by co-sputtering from TiAl and TiB2 targets onto AISI316 stainless steel substrates at a temperature of 170 °C. The stoichiometry and nanostructure have been studied ...
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Nanostructure, mechanical and tribological properties of reactive magnetron sputtered TiCx coatings
(2008)This study describes the correlation between microstructure, mechanical and tribological properties of TiCx coatings (with x being in the range of 0-1.4), deposited by reactive magnetron sputtering from a Ti target in ...
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Photothermal radiometry on nickel (pigmented aluminium oxide) selective solar absorbing surface coatings
(1998)Photothermal radiometry (PTR) is applied to characterize nickel-pigmented aluminium oxide solar absorbing coatings. A modulated laser beam is used to heat the solar samples. The subsequent emission of thermal radiation is ...
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Synthesis and characterization of Cr-B-N coatings deposited by reactive arc evaporation
(2008)Nanocomposite Cr-B-N coatings were deposited from CrB0.2 compound targets by reactive arc evaporation using an Ar/N2 discharge at 500 °C and -20 V substrate bias. Elastic recoil detection (ERDA), x-ray photoelectron ...
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Textured VN coatings with Ag3VO4 solid lubricant reservoirs
(2011)Silver oxovanadate powders were produced using a low temperature hydrothermal synthesis method. X-ray diffraction (XRD) and Raman microscopy revealed the formation of the α-Ag3VO4 phase, and differential scanning calorimetry ...
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Thermoelectric properties of Mg2Si coatings deposited by pack cementation assisted process on heavily doped Si substrates
(2014)This work presents a study of structural and thermoelectric properties of Mg2Si coatings deposited on heavily doped p- and n-type Si substrates, at 650 C. The as-grown layers were smooth and uniform in thickness without ...
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Tribological properties of twin electron-beam evaporated Cr-N and Al-Cr-N coatings under laboratory sliding and drill experiments
(2008)The tribological behavior of substoichiometric Cr-N and Al-Cr-N coatings prepared by twin electron-beam evaporation at 450°C was studied. Al-Cr-N coatings with Al to Cr ratios in the range of 1-8 (and nitrogen concentrations ...
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X-Ray diffraction investigations of magnetron sputtered TiCN coatings
(1995)X-ray diffraction measurements were performed on titanium carbonitride coatings produced in an electron enhanced, unbalanced magnetron system. The films were deposited onto AISI 316 stainless steel substrates with an argon ...