Microstructure, mechanical properties and corrosion behavior of Ce doped TiN films

Fan, Lei; Liu, Ming; Wang, Yanlai; Cui, Hongbing; Ren, Xudong; Xin, Bo

doi:10.1016/j.apsusc.2021.151770

Cited by 10 publications

(6 citation statements)

References 26 publications

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“…The reason is that the inclusion of Ce 2 O 3 particles in the T2.5 coating is the largest, and Ce 3+ is present in Ce 2 O 3 particles. The study of Fan et al [ 37 ] showed that Ce 3+ was easy to convert into Ce 4+ , which hindered the charge transfer and thus prevented the corrosion reaction. The study of Zhang et al [ 45 ] showed that, with the progress of the corrosion reaction, the corrosion products of Ce 3+ become stable Ce(OH) 3 and Ce(OH) 4 , which can fill in the microcracks and act as a barrier to the penetration of a corrosive medium.…”

Section: Resultsmentioning

confidence: 99%

“…The wear resistance of coatings with different CeO 2 contents was investigated by Ding, and the results showed that the coatings possessed the highest hardness and the lowest wear rate at a CeO 2 content of 1.5 wt% [ 36 ]. The effect of Ce content on the performance of TiN coatings was studied by Fan, and the results showed that the highest adhesion was achieved at a Ce content of 1.9% wt% [ 37 ]. Based on the above studies, a particular coating concentration of Ce 2 O 3 at 1.5 wt%, 2 wt% and 2.5 wt% was designed, respectively.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

The Tribological and Mechanical Properties of PI/PAI/EP Polymer Coating under Oil Lubrication, Seawater Corrosion and Dry Sliding Wear

Cao

et al. 2023

Polymers

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To investigate the tribological performance of a copper alloy engine bearing under oil lubrication, seawater corrosion and dry sliding wear, three different PI/PAI/EP coatings consisting of 1.5 wt% Ce2O3, 2 wt% Ce2O3, 2.5 wt% Ce2O3 were designed, respectively. These designed coatings were prepared on the surface of CuPb22Sn2.5 copper alloy using a liquid spraying process. The tribological properties of these coatings under different working conditions were tested. The results show that the hardness of the coating decreases gradually with the addition of Ce2O3, and the agglomeration of Ce2O3 is the main reason for the decrease of hardness. The wear amount of the coating increases first and then decreases with the increase of Ce2O3 content under dry sliding wear. The wear mechanism is abrasive wear under the condition of seawater. The wear resistance of the coating decreases with the increase of Ce2O3 content. The wear resistance of the coating with 1.5 wt% Ce2O3 is the best under-seawater corrosion. Although Ce2O3 has corrosion resistance, the coating of 2.5 wt% Ce2O3 has the worst wear resistance under seawater conditions due to severe wear caused by agglomeration. Under oil lubrication conditions, the frictional coefficient of the coating is stable. The lubricating oil film has a good lubrication and protection effect.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

The Tribological and Mechanical Properties of PI/PAI/EP Polymer Coating under Oil Lubrication, Seawater Corrosion and Dry Sliding Wear

Cao

et al. 2023

Polymers

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show abstract

“…Because Si atoms tend to bond with Ti65 alloy substrate, Si atoms will enter the coating to replace Al atoms in the TiAl3 layer. Due to the high activity of the Ce element, Ce atoms can replace Ti atoms [34,35] Although TiAl 2 has the lowest Gibbs free energy of formation, it can only nucleate at the TiAl interface [14]. The activation energies of intermetallic compounds in the Ti-Al system are Q Ti 3 Al > Q TiAl 2 > Q TiAl > Q TiAl 3 [5], so Ti65 alloy reacts with pure Al to preferentially form TiAl 3 layer and then reacts with Al-10 wt.%Si-1 wt.%Ce alloy liquid.…”

Section: Crackmentioning

confidence: 99%

“…Because Si atoms tend to bond with Ti65 alloy substrate, Si atoms will enter the coating to replace Al atoms in the TiAl 3 layer. Due to the high activity of the Ce element, Ce atoms can replace Ti atoms [34,35] and finally form (Ti,Ce)(Al,Si) 3 composite phase layer, and the excess alloy liquid forms the Al-Si layer. The schematic diagram of formation mechanism of alloy layer was shown in Figure 9.…”

Section: Crackmentioning

confidence: 99%

Study on the Influence Law of Ce on Microstructure and High-Temperature Oxidation Resistance of Ti-Al-Si Composite Coating

Zeng

2023

Coatings

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High-temperature titanium alloys are widely used in aerospace hot parts; however, the thermal barrier temperature of 600 °C limits its service temperature. In this paper, a two-step hot-dip plating method is proposed to prepare the composite coating containing Ce on the surface of titanium alloy, which can make the oxidation resistance temperature of titanium alloy reach 800 °C The microstructure, phase composition, and element distribution of Ce-containing Ti-Al-Si hot-dip coating, Ce-containing Ti-Al-Si pre-oxidation coating and Ce-containing Ti-Al-Si high-temperature oxidation coating were studied. The results showed that the Ti-Al-Si hot-dip coating containing Ce was mainly composed of (Ti,Ce)(Al,Si)3 alloy phase layer, and the Ti-Al-Si pre-oxidation coating containing Ce was mainly composed of Ti-Al binary system phase layer and dense Al2O3 layer rich in CeO2. Ce in the high-temperature oxidation coating of Ti-Al-Si containing Ce was mainly distributed in Ti3Al, TiAl, TiAl3 + Ti5Si3 mixed phase layer and Al2O3. The addition of Ce could improve the uniformity of composite coating, prevent the spread of cracks, and improve the high-temperature oxidation resistance of Ti-Al-Si coating.

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“…Because Si atoms tend to bond with Ti65 alloy substrate, Si atoms will enter the coating to replace Al atoms in TiAl3 layer. Due to the high activity of Ce element, Ce atoms can replace Ti atoms [28,29]…”

Section: Growth Kinetics Of Coatingsmentioning

confidence: 99%

Study on the Influence Law of Ce on Microstructure and High Temperature Oxidation Resistance of Ti-Al-Si Composite Coating

Zeng¹,

Li²

2023

Preprint

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High temperature titanium alloys are widely used in aerospace hot parts, however, the thermal barrier temperature of 600 oC limits its service temperature. In this paper, a two-step hot-dip plating method is proposed to prepare the composite coating containing Ce on the surface of titanium alloy, which can make the oxidation resistance temperature of titanium alloy reach 800 oC The microstructure, phase composition and element distribution of Ce-containing Ti-Al-Si hot-dip coating, Ce-containing Ti-Al-Si pre-oxidation coating and Ce-containing Ti-Al-Si high-temperature oxidation coating were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS), respectively. The results show that the Ti-Al-Si hot-dip coating containing Ce is mainly composed of (Ti,Ce)(Al,Si)3 alloy phase layer, and the Ti-Al-Si pre-oxidation coating containing Ce is mainly composed of Ti-Al binary system phase layer and dense Al2O3 layer rich in CeO2. Ce in the high temperature oxidation coating of Ti-Al-Si containing Ce is mainly distributed in Ti3Al, TiAl, TiAl3+Ti5Si3 mixed phase layer and Al2O3. The addition of Ce can promote the formation of continuous Al2O3 layer, improve the uniformity of composite coating, prevent the spread of cracks, and improve the high temperature oxidation resistance of Ti-Al-Si coating.

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Microstructure, mechanical properties and corrosion behavior of Ce doped TiN films

Cited by 10 publications

References 26 publications

The Tribological and Mechanical Properties of PI/PAI/EP Polymer Coating under Oil Lubrication, Seawater Corrosion and Dry Sliding Wear

The Tribological and Mechanical Properties of PI/PAI/EP Polymer Coating under Oil Lubrication, Seawater Corrosion and Dry Sliding Wear

Study on the Influence Law of Ce on Microstructure and High-Temperature Oxidation Resistance of Ti-Al-Si Composite Coating

Study on the Influence Law of Ce on Microstructure and High Temperature Oxidation Resistance of Ti-Al-Si Composite Coating

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