TiNx thin films for energy-saving application prepared by atmospheric pressure chemical vapor deposition

Lin, Xin; Zhao, Gaoling; Wu, Lianguo; Duan, Gangfeng; Han, Gaorong

doi:10.1016/j.jallcom.2010.04.142

Cited by 15 publications

(5 citation statements)

References 20 publications

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“…Numerous studies show that the composition of TiN is nonstoichiometric from the CVD method. 27 According to work by Sundgren et al, the x value in nonstoichiometric TiN x can change from 0.6 to 1.2, while its cubic-phase structure will not change. 28 In order to take the effect of TiN coating on heat transfer into account, supercritical thermal cracking of n-hexane in a microchannel flow reactor was adopted to monitor the fuel and tube wall temperatures.…”

Section: Resultsmentioning

confidence: 99%

“…This nonstoichiometry illustrates the presence of pyramidal and tetrahedral coordination on the surface due to coordinative unsaturation. Numerous studies show that the composition of TiN is nonstoichiometric from the CVD method . According to work by Sundgren et al, the x value in nonstoichiometric TiN x can change from 0.6 to 1.2, while its cubic-phase structure will not change …”

Section: Resultsmentioning

confidence: 99%

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Inhibition Effect of APCVD Titanium Nitride Coating on Coke Growth during n-Hexane Thermal Cracking under Supercritical Conditions

Tang

Gao

et al. 2014

Ind. Eng. Chem. Res.

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In this work, titanium nitride (TiN) coating was used as a passive layer to inhibit metal catalytic coking during hydrocarbon fuel cracking on the microchannel inner surface of stainless steel 304 (SS304) tubes. In order to obtain an inert and effective passive coating, TiN coating was prepared in SS304 tubes with 2 mm inside diameter and 700 mm length by atmospheric pressure chemical vapor deposition (APCVD) using a TiCl4–H2–N2 system. The coating’s thickness, phase composition, morphology, and chemical composition were investigated by metalloscopy, X-ray diffraction, scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX), respectively. Characterization results indicated that TiN coating had a relatively complete cubic-phase crystal form with a N/Ti ratio of 1:1, presenting small star-shaped crystals on the whole. The inhibition effects of TiN coating on the morphologies and amounts of coke were studied by SEM and EDX after n-hexane thermal cracking at 600 °C and 3.3 MPa for 20 min. Under these conditions, different contributions to carbon deposition were discussed including oxidative reactions and pyrolysis of n-hexane. Along the axial length of the bare tube, stunted and clubbed cokes formed by autoxidation near the distance of 100 mm; granular metal carbides and filamentous cokes formed by metal catalysis near the distances of 350 and 600 mm, respectively. However, no morphologies of carbon deposits on a TiN-coated tube surface were observed after thermal cracking of n-hexane at 600 °C and 3.3 MPa for 20 min. At distances of 100, 350, and 600 mm away from the tube inlet, the carbon atomic percentages of coke in these three areas were 27.28%, 58.04%, and 99.69% for the bare tube, larger than those of 5.76%, 15.73%, and 30.66% for the TiN-coated tube, respectively. The results showed that the inhibition effect of APCVD TiN coating on coke growth is superior to that of other coatings (e.g., alumina coating). The reason is that TiN coating not only creates a barrier between the hydrocarbon fuels and metal surface to inhibit related catalytic coke formation but also minimizes carbon deposits by absorbing C atoms.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Inhibition Effect of APCVD Titanium Nitride Coating on Coke Growth during n-Hexane Thermal Cracking under Supercritical Conditions

Tang

Gao

et al. 2014

Ind. Eng. Chem. Res.

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“…In order to improve energy efficiency and reduce energy consumption, thermal insulation coatings have been applied to the glass as one of the energy-saving and emission reduction approaches [3]. At present, there are two kinds of thermal insulation coatings [4]. One is the solar control film, which can reflect the near-infrared solar radiation (which occupies about 50% of the total solar radiation) while allowing natural light to pass through, therefore it can be applied to hot summer areas [5].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it can be used as a thermal insulation coating in the cold climate-areas. Additionally, to meeting the requirements of thermal insulation coatings used for all weather conditions, multilayer films are explored and applied [4,7]. However, such multilayer films are complex and high-cost.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, TiN-based material can be regarded as an ideal candidate for the single-layer energy-saving film on the glass that combines the function of solar control and low-emission [12,13]. Currently, TiN films have been prepared by various methods, such as reactive magnetron sputtering, laser ablation, ion beam deposition and plasma-assisted chemical vapor deposition [4,17,18]. However, the methods mentioned above are complicated in operation, demanding in conditions and inapplicable to the preparation of energy-saving coatings on buildings with large-scale.…”

Section: Introductionmentioning

confidence: 99%

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TiN-based organic-inorganic composite films with dual functions of solar control and low-emission for energy-saving coatings

Yang

Jiang

et al. 2020

Mater. Res. Express

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With the fast development of modern intelligent buildings, the demand for a comfortable environment and 'low carbon' technologies, for example, energy-saving buildings, becomes more intense. Thermal insulation coatings as one of the most promising routes to alleviate the energy consumption of buildings attract extensive attention in recent years. In this work, titanium nitridebased organic-inorganic composite films (TiN O/I films) were introduced as the thermal insulation coatings to window glass via blade coating method. Additionally, two different synthesis methods were adopted to prepare the inorganic TiN nanoparticle and its effect on the optical property of the coatings was studied detailedly via the ultraviolet-visible-near-infrared (UV-vis-IR) spectrophotometer and Fourier transform infrared spectrometer characterizations. In addition, the thermal insulation properties of the films were characterized by a system that simulates the natural environment. Various characterizations show that the synthesized TiN O/I films can not only pass through the visible light but also has high reflectance at the mid-infrared range, that is with the functions of solar control and low emission, well satisfying the requirements of the energy-saving coatings for window glass. These results demonstrated the good feasibility of TiN O/I films in thermal insulation coatings, and also provide a direction for the development of more novel thermal insulation materials with large-scale.

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The effect of annealing on the structural, optical and electrical properties of Titanium Nitride (TiN) thin films prepared by DC magnetron sputtering with supported discharge

Kavitha

Kannan

Reddy

et al. 2016

J Mater Sci: Mater Electron

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TiNx thin films for energy-saving application prepared by atmospheric pressure chemical vapor deposition

Cited by 15 publications

References 20 publications

Inhibition Effect of APCVD Titanium Nitride Coating on Coke Growth during n-Hexane Thermal Cracking under Supercritical Conditions

Inhibition Effect of APCVD Titanium Nitride Coating on Coke Growth during n-Hexane Thermal Cracking under Supercritical Conditions

TiN-based organic-inorganic composite films with dual functions of solar control and low-emission for energy-saving coatings

The effect of annealing on the structural, optical and electrical properties of Titanium Nitride (TiN) thin films prepared by DC magnetron sputtering with supported discharge

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