Corrosion resistance of TiO2 films grown on stainless steel by atomic layer deposition

Shan, Chongxin; Hou, Xianghui; Choy, Kwang‐Leong

doi:10.1016/j.surfcoat.2007.08.066

Cited by 242 publications

(128 citation statements)

References 26 publications

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“…Different types of techniques were used to fabricate thin films because thin films are having many interrelated parameters and excellent physical properties like easy of film formation, mechanical strength, and electrical conductivity etc. The nanostructured materials having excellent physical and chemical properties and are used in many applications like gas sensors 1 , electroluninence display 2 , electrochromic devices 3 , humidity sensors 4 , solar applications 5 etc. Nano materials are good at optical, electronic and photoelectrochemical properties.…”

Section: Introductionmentioning

confidence: 99%

OPTICAL AND ELECTRICAL PROPERTIES OF Mn2+ DOPED TITANIUM OXIDE THIN FILMS

2017

RJC

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Mn 2+ doped TiO2 thin films were prepared by sol-gel method. Optical, ionic conductivity, photoluminescence and chromaticity studies have been carried-out on to the prepared samples. The UV-visible spectrum consists of four bands at 578, 529, 432 and 368 nm and is assigned to d-d transitions. The ionic conductivity plot revealed that the conduction takes place by the variation of temperature, which is due to the motion of charge carriers in free space. The thermo emf of Mn 2+ doped TiO2 thin films increased with the increase of temperature is due to conduction phenomenon from 275 to 325 K. Photoluminescence (PL) spectrum showed the emission peaks at 462, 513 and 582 nm wavelengths. The luminescence source of the material and its functional values can be determined by the color coordinates, which is found to be in orange and yellow regions.

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Section: Introductionmentioning

confidence: 99%

OPTICAL AND ELECTRICAL PROPERTIES OF Mn2+ DOPED TITANIUM OXIDE THIN FILMS

2017

RJC

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“…In addition, depending of phase and preparation conditions, anatase TiO 2 has high durability, high refractive index (n = 2.3), high resistivity and dielectric constant 11 k, with values from 30 to 100, so it is suitable for applications in optical wave-guides 12 , antireflection coatings 13 , photochemical solar cells 14,15 and gas sensors 11,12 . Photons with energy equal or higher than the energy band gap (~3.2eV) are able to generate electron/hole pairs 7 and have energy high enough to initiate redox and oxidation reactions 16 . For example, excited electrons can reduce oxygen to superoxide radicals, whilst the holes oxidize water molecules into hydroxyl radicals 5,13 .…”

Section: Introductionmentioning

confidence: 99%

“…These intermediate species induce the decomposition of various molecules such as those which are organic or microbes, which leads to the self-cleaning ability and anti-microbial applications of a TiO 2 surface 17 . In order to improve and expand upon the range of applications some modifications have been studied and several approaches have been proposed: First, to reduce the band gap of TiO 2 with the intention of improving the light absorption in the visible region, studies have been conducted involving doping with metallic and non-metallic impurities [4][5][6]18 Recent investigations have included the use of practical and economical substrates such as metallic materials 5,15,16,20 . The particular properties of metals, such as its conductivity, flexibility, mechanical robustness and capacity to be shaped easily can change the photocatalytic characteristics and expand the possibility for practical application 7,16 , such as self-cleaning surfaces, antibacterial agents, photo degradation of organics, use in the manufacture of components introduced in hospital equipment, utensils for food preparation and air conditioning 11,14 .…”

Section: Introductionmentioning

confidence: 99%

Deposition of TiO2 Film on Duplex Stainless Steel Substrate Using the Cathodic Cage Plasma Technique

et al. 2016

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This research used the "cathodic cage (CC)" technique for TiO 2 film deposition on duplex stainless steel substrate. This technique uses a multiple hollow cathode effect. Duplex stainless steel substrates were treated at temperatures of 300 o C, 350 o C and 400 o C, giving a temperature value ratio (T s /T m ) of 0.27 to 0.31 (Ts being the substrate temperature and Tm the melting temperature of the deposited material). Treatment times of 1, 2 and 4 hours were administered and polycrystalline TiO 2 films were obtained. The films were analyzed by optical microscopy (OM), X-ray diffraction (XRD), Raman spectroscopy and scanning electron microscopy (SEM). During analysis, the formation of uniform films and the possibility of controlling the TiO 2 phase were observed. It was also shown that with longer treatment times and higher temperatures the rutile phase predominates. For treatment times of 4 hours at all temperatures, the rutile structure was present. With treatment times of less than 4 hours, anatase was present. In addition, results showed that this simple, low cost technique can be an alternative method for depositions of TiO 2 films, with the advantage of high levels of control over porosity, thickness and phase composition (anatase and rutile).

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“…For instance, TiO 2 has high corrosion resistance and chemical stability and an excellent optical transparency in the visible and near infrared regions, as well as a high refractive index that makes it useful for anti-reflection coatings in optical devices [1]. It has been used mostly as a pigment in paints, sunscreens, ointments and toothpaste since its commercial production in the early twentieth century.…”

Section: Introductionmentioning

confidence: 99%