Oxidation behavior of CVD star-shaped TiN coating in ambient air

Tang, Shiyun; Wang, Jianli; Zhu, Quan; Chen, Yaoqiang; Li, Xiangyuan

doi:10.1016/j.ceramint.2015.04.014

Cited by 20 publications

(15 citation statements)

References 28 publications

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“…NH4Cl and organic decomposed can be deposited in low temperature zone. References about CVD suggested that it was easier to form TiN for higher substrate temperature and the synthesis temperature and substrate temperature were often above 1000℃ and 700℃ separately [14][15][16]. Hu et al considered that TiCl3 could react with the decompose gases of NH3 at 570℃ to form TiN by thermodynamic calculation [18].…”

Section: Rusults and Discussionmentioning

confidence: 99%

“…In reactive ball milling, impurities will often be introduced into the powders from the milling medium, therefore, the ideal low energy cost method for synthesizing pure TiN is CVD. The raw materials for synthesizing TiN by CVD are usually TiCl4, N2 and H2, and the synthesis temperature is in the range of 750℃ to 1000℃ [14][15][16]. N. Ramanuja et al synthesized TiN coating by low-pressure chemical vapor deposition (LPCVD) using TiCl4 and NH3 as raw materials.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis o f Ti2N Powders by Vacuum Slowly Vapor Deposition Using Urea as Nitrogen Source

Sun¹,

Yan²,

Hónɡ³

et al. 2016

Proceedings of the 2015 International Conference on Materials Chemistry and Environmental Protection (Meep-15)

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Hydrochloric acid solution of TiCl3 was synthesized by reacting of Ti powders and hydrochloric acid in highpressure reactor at 145℃. After vacuum drying TiCl3•6H2O crystalline were obtained. TiCl3•6H2O crystalline and urea, being as nitrogen source, were put into the vacuum slowly vapor deposition reactor. The heating temperature and holding time were 600℃ and 10 min separately. The deposited powders at different temperature were analyzed by X-ray diffraction (XRD). The results show: Ti2N powders can be synthesized at the range of 450℃ to 600℃. The powders deposited at low temperature (＜ 80℃) were NH4Cl and the organics decomposed from urea.

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Section: Rusults and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis o f Ti2N Powders by Vacuum Slowly Vapor Deposition Using Urea as Nitrogen Source

Sun¹,

Yan²,

Hónɡ³

et al. 2016

Proceedings of the 2015 International Conference on Materials Chemistry and Environmental Protection (Meep-15)

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“…As a result, the anti-coking performance of TiN and TiC coatings is better than that of TiO 2 coating. [20,22]. Therefore, TiC coating can be used as an excellent anti-coking coating with a better high temperature oxidation resistance than TiN coating.…”

Section: Oxidation Resistance Of the Tic Coatingmentioning

confidence: 97%

“…The results show that TiN coating has an excellent anti-coking performance but poor oxidation resistance [22]. On the contrary, TiO 2 coating has a good oxidation resistance at high temperature but poor anti-coking performance.…”

Section: Introductionmentioning

confidence: 95%

Comparison of the anti-coking performance of CVD TiN, TiO 2 and TiC coatings for hydrocarbon fuel pyrolysis

Tang

Shi

Wang

et al. 2017

Ceramics International

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“…Furthermore, on the basis of previous works, the TiN coating has excellent anti-coking performance, but poor oxidation resistance, while the TiO 2 coating has good oxidation resistance at high temperature, but poor anti-coking performance [26]. This paper tries to provide more information on the relationship between the anti-coking performance and the growth characteristics and properties of CVD TiN and TiO 2 anti-coking coatings, and thus provide guidance for designing better anti-coking coatings.…”

Section: Introductionmentioning

confidence: 94%

Comparison of Growth Characteristics and Properties of CVD TiN and TiO2 Anti-Coking Coatings

et al. 2019

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Coating metals with anti-coking materials inhibit their catalytic coking and are especially beneficial in the pyrolysis of hydrocarbon fuels. It is believed that growth characteristics and properties may play a pivotal role in the anti-coking performance of chemical vapor deposition (CVD) coatings. In this study, TiN and TiO 2 coatings were obtained by CVD using TiCl 4 -N 2 -H 2 and TiCl 4 -H 2 -CO 2 systems, respectively. The effects of deposition time, residence time, and partial pressure were examined, and the coating microstructure was characterized by scanning electron microscopy (SEM). The results reveal that the effect of deposition parameters on the growth characteristics of TiN and TiO 2 coatings is very different. The growth of the TiN coating shows characteristics of the island growth model, while the TiO 2 coating follows the layer model. In general, the growth rate of the star-shaped TiN crystals is higher than that of crystals of other shapes. For the TiO 2 coating, the layer mode growth characteristics indicate that the morphology of the TiO 2 coating does not change significantly with the experimental conditions. Coking tests showed that the morphology of non-catalytic cokes is not only affected by the temperature, pressure, and coking precursor, but is also closely related to the surface state of the coatings. Both TiN and TiO 2 coatings can effectively prevent catalytic coking and eliminate filamentous cokes. In some cases, however, the N or O atoms in the TiN and TiO 2 coatings may affect common carbon deposits formed by non-catalytic coking, such as formation of needle-like and flaky carbon deposits.

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Oxidation behavior of CVD star-shaped TiN coating in ambient air

Cited by 20 publications

References 28 publications

Synthesis o f Ti2N Powders by Vacuum Slowly Vapor Deposition Using Urea as Nitrogen Source

Synthesis o f Ti2N Powders by Vacuum Slowly Vapor Deposition Using Urea as Nitrogen Source

Comparison of the anti-coking performance of CVD TiN, TiO 2 and TiC coatings for hydrocarbon fuel pyrolysis

Comparison of Growth Characteristics and Properties of CVD TiN and TiO2 Anti-Coking Coatings

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