The tribological behavior of niobium nitride and silver composite films at elevated testing temperatures

Ju, Hongbo; Ding, Ning; Xu, Jie; Yu, Lihua; Geng, Yaoxiang; Ahmed, Fawad

doi:10.1016/j.matchemphys.2019.121840

Cited by 28 publications

(5 citation statements)

References 30 publications

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“…A magnetron-sputtered TiAlN/VN film showed variation in the average friction coefficient in a ball-on-disc wear test against an Al 2 O 3 counterpart when the testing temperature was increased from 25 • C to 700 • C [16]. However, some transition metal nitride-based films containing copper or silver possessed tribological properties which were slightly influenced by the testing temperature, due to the self-lubricating nature of copper or silver [17][18][19]. G. Gassner et al reported [4] the self-lubrication mechanism of Mo 2 N at testing temperatures above 500 • C, while the tribological properties at <500 2 of 10 • C and the wear resistance properties of the films were barely mentioned.…”

Section: Introductionmentioning

confidence: 99%

Tribological Properties of Mo2N Films at Elevated Temperature

Liu

et al. 2019

Coatings

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Mo2N films were synthesized using the reactive magnetron sputtering system in a mixture of argon and nitrogen, and the tribological properties were investigated at different testing temperatures against an Al2O3 counterpart. The relative intensity ratio (RIR) method was used to calculate the weight fraction of the tribo-film (MoO3) on the wear tracks of the films. The results showed that the average friction coefficient first increased from 0.30 at 25 °C to 0.53 at 200 °C, and then decreased to 0.29 at 550 °C, while the wear rate decreased from 2.1 × 10−6 mm3/Nmm at 25 °C to 5.3 × 10−7 mm3/Nmm at 200 °C and then increased to 3.1 × 10−5 mm3/Nmm at 550 °C. The weight fraction of tribo-film was mainly attributed to changes in the average friction coefficient and the wear rate. Besides this, the relative humidity also influenced the tribological properties at 25–200 °C.

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Section: Introductionmentioning

confidence: 99%

Tribological Properties of Mo2N Films at Elevated Temperature

Liu

et al. 2019

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“…[ 197 ] In addition to this, several researchers attempted to improve the mechanical and tribological properties of NbN films by using the codeposition sputtering technique. The metals such as silicon, [ 198 ] aluminum, [ 199 ] bismuth, [ 200 ] copper, [ 201 ] and silver [ 202 ] were commonly engaged for codeposition along with niobium for the formation of composite nitrides in various studies.…”

Section: Surface Properties and Applications Of Tmnsmentioning

confidence: 99%

Magnetron Sputtered Thin Films Based on Transition Metal Nitride: Structure and Properties

Bharani

Sharma

2022

Physica Status Solidi (a)

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Transition metal nitride (TMN) thin films exhibit outstanding physical, chemical, and mechanical properties, making them best suitable for a wide variety of applications. The most commonly used technique to produce metal nitride thin films with specific properties at optimum conditions is magnetron sputtering. Considering this, this review begins with advancements in the sputtering process from basic diode sputtering to the most commonly used pulsed magnetron sputtering. Further, the literature on several TMNs deposited via magnetron sputtering is summarized, referring to several articles that have been published during the last decades. The main emphasis lies on nitride-based thin films' structural, morphological, and mechanical aspects for various applications. In addition, the influence of reactive gas flow rate, substrate temperature, layer thickness, postannealing temperature, substrate bias voltage, protective layers, the sputtering technique adopted, etc. on the quality and performance of the thin films is also focused. The overall review work can be beneficial for the students and researchers in understanding the basic sputtering phenomenon with its advancements, the relationship between deposition parameters and surface properties, and to know the current research trend for exploring several research gaps in the literature.

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“…Moreover, the introduction of Ag in NbN films is conductive to reducing friction at elevated testing temperatures, as the layered Nb 2 O 5 and AgNbO 3 can be formed on the sliding contact surfaces [ 21 , 22 ]. According to the above reasons, many studies have focused on the effect of silver content on the wear mechanisms of NbN-Ag films at elevated temperatures [ 21 , 23 , 24 , 25 ]. However, most of Ag-containing composite films exhibited a low friction coefficient only when the Ag content reached a higher level (e.g., about 18 at.% Ag even higher) [ 11 , 26 ], which is usually accompanied by a high wear rate at room temperature owing to the degradation of mechanical properties caused by Ag doping [ 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

“…According to the above reasons, many studies have focused on the effect of silver content on the wear mechanisms of NbN-Ag films at elevated temperatures [ 21 , 23 , 24 , 25 ]. However, most of Ag-containing composite films exhibited a low friction coefficient only when the Ag content reached a higher level (e.g., about 18 at.% Ag even higher) [ 11 , 26 ], which is usually accompanied by a high wear rate at room temperature owing to the degradation of mechanical properties caused by Ag doping [ 23 , 24 ]. In fact the engineering components commonly undergo alternating conditions of room temperature at start-up and high-temperature stabilization stages.…”

Section: Introductionmentioning

confidence: 99%

Microstructure, Mechanical and Tribological Properties of Arc Ion Plating NbN-Based Nanocomposite Films

Chen

et al. 2022

Nanomaterials

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NbN, NbN-Ag and NbN/NbN-Ag multilayer nanocomposite films were successfully deposited by an arc ion plating system (AIP), and their microstructures, mechanical and tribological properties were systematically investigated. The results show that all the films had a polycrystalline structure, and the Ag in the Ag-doped films existed independently as a face-centered cubic phase. The content of Ag in NbN-Ag and NbN/NbN-Ag films was 20.11 and 9.07 at.%, respectively. NbN films fabricated by AIP technique had excellent mechanical properties, and their hardness and critical load were up to 44 GPa and 34.6 N, respectively. The introduction of Ag into NbN films obviously reduced the friction coefficient at room temperature, while the mechanical properties and wear resistance were degraded sharply in comparison with that of NbN films. However, the NbN/NbN-Ag films presented better hardness, H/E*, H3/E*2, adhesive strength and wear resistance than NbN-Ag films. Additionally, analysis of wear surfaces of the studied films and Al2O3 balls using 3D images, depth profiles, energy dispersive spectrometry (EDS) and Raman spectra indicated that the main wear mechanisms of NbN and NbN/NbN-Ag films were adhesive and oxidation wear with slight abrasive wear, while the severe abrasive and oxidation wear were the dominant wear mechanism for NbN-Ag films.

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The tribological behavior of niobium nitride and silver composite films at elevated testing temperatures

Cited by 28 publications

References 30 publications

Tribological Properties of Mo2N Films at Elevated Temperature

Tribological Properties of Mo2N Films at Elevated Temperature

Magnetron Sputtered Thin Films Based on Transition Metal Nitride: Structure and Properties

Microstructure, Mechanical and Tribological Properties of Arc Ion Plating NbN-Based Nanocomposite Films

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