High-Temperature Self-Lubricating Metal Nitride-Based Nanostructure Composite Films

Ju, Hongbo

doi:10.5772/intechopen.86124

Cited by 3 publications

(4 citation statements)

References 16 publications

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“…Lower coefficient of friction and higher wear resistance were observed in numerous V and Mo-alloyed based nitride coatings, such as CrN/Mo 2 N, TiAlN/MoN [10], CrN/MoN [11], and TiAlN/MoN [12]. The coefficient of friction and anti-wear of these coatings could be improved especially at high temperatures by the formation of lubricant oxides of MoO 3 and V 2 O 5 [13]. Numerous metal oxide has also been used as wear-resistant coatings of various systems prepared by different methods such as PVD [14], electroexplosive spraying etc., [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Effect of Addition of Mo or V on the Structure and Cutting Performance of AlCrN-Based Coatings

et al. 2020

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This study focuses on a comparative analysis of AlCrXN (X = Mo or V) coatings with the reference AlCrN coating via arc ion plating technique (AIP). The XRD and XPS results showed that the AlCrXN coatings were mainly composed of fcc-(Cr,Al)N solid solution phases. Both the AlCrMoN and AlCrVN coatings exhibited much higher hardness and adhesive strength than the AlCrN coating. The addition of Mo or V decreased the coefficient of friction (COF) and wear rate, which was due to the formation of lubricant oxides containing Mo or V on the coating surfaces. The cutting results showed that abrasive wear, adhesive wear, and oxidation wear were the main wear mechanisms for the coated tools at the cutting speeds of 60 m/min and 94 m/min. The addition of Mo or V dramatically improved the cutting performance of AlCrXN-coated tools by increasing the anti-wear ability due to the high hardness and the formed lubricant VOx or MoOx films.

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Section: Introductionmentioning

confidence: 99%

Effect of Addition of Mo or V on the Structure and Cutting Performance of AlCrN-Based Coatings

et al. 2020

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“…It has lubricating properties due to three types of W–O bonds. This scale has a low hardness of about 5 GPa and can be worn easily during friction because of the weak van der Waals interactions between layers . It can wear out fast but also takes a few microseconds to regrow.…”

Section: Resultsmentioning

confidence: 99%

“…This scale has a low hardness of about 5 GPa and can be worn easily during friction because of the weak van der Waals interactions between layers. 89 It can wear out fast but also takes a few microseconds to regrow. Therefore, WN can be considered a self-lubricating material.…”

Section: Resultsmentioning

confidence: 99%

Composite Materials with Nanoscale Multilayer Architecture Based on Cathodic-Arc Evaporated WN/NbN Coatings

Smyrnova,

Sahul,

Haršáni

et al. 2024

ACS Omega

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Hard nitride coatings are commonly employed to protect components subjected to friction, whereby such coatings should possess excellent tribomechanical properties in order to endure high stresses and temperatures. In this study, WN/NbN coatings are synthesized by using the cathodic-arc evaporation (CA-PVD) technique at various negative bias voltages in the 50–200 V range. The phase composition, microstructural features, and tribomechanical properties of the multilayers are comprehensively studied. Fabricated coatings have a complex structure of three nanocrystalline phases: β-W2N, δ-NbN, and ε-NbN. They demonstrate a tendency for (111)-oriented grains to overgrow (200)-oriented grains with increasing coating thickness. All of the data show that a decrease in the fraction of ε-NbN phase and formation of the (111)-textured grains positively impact mechanical properties and wear behavior. Investigation of the room-temperature tribological properties reveals that with an increase in bias voltage from −50 to −200 V, the wear mechanisms change as follows: oxidative → fatigue and oxidative → adhesive and oxidative. Furthermore, WN/NbN coatings demonstrate a high hardness of 33.6–36.6 GPa and a low specific wear rate of (1.9–4.1) × 10–6 mm3/Nm. These results indicate that synthesized multilayers hold promise for tribological applications as wear-resistant coatings.

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“…Tribological investigation on monolayer CrAlN coating revealed the highest coefficient of friction (COF), especially at higher temperatures. Some researchers have added Mo element into nitride coatings, which could easily form Mo-containing lubricious oxide and achieve low COF during the sliding process at higher temperature [15,16]. Bobzin et al [17] explained that low friction of Mo-containing coatings was due to the formation of a lubricious MoO 3 layer through tribo-oxidation.…”

Section: Introductionmentioning

confidence: 99%

Effect of bilayer number on mechanical and wear behaviours of the AlCrN/AlCrMoN coatings by AIP method

Iram

Wang

Cai

et al. 2020

Surface Engineering

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AlCrN/AlCrMoN multilayer coatings with various bilayer numbers (1, 2, 4, and 6) were deposited on high speed steel (HSS) via arc ion plating technology. The effects of bilayer numbers on the microstructure, mechanical and tribological properties were investigated. XRD and TEM results showed that the solid solution (Al, Cr, Mo) N was the main phase in the AlCrN/AlCrMoN multilayer coatings. As compared with the AlCrN/AlCrMoN-1 coating, the AlCrN/AlCrMoN multilayer coatings showed the improved adhesion, hardness and tribology performance. The AlCrN/AlCrMoN-4 coating showed the highest adhesion (Lc2 = 52 N) and micro-hardness (3500 HK 0.05 ). The AlCrN/AlCrMoN-4 coating also exhibited the lowest friction coefficient and wear rate both at room temperature and high temperature due to the optimal structure and good overall performance.

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High-Temperature Self-Lubricating Metal Nitride-Based Nanostructure Composite Films

Cited by 3 publications

References 16 publications

Effect of Addition of Mo or V on the Structure and Cutting Performance of AlCrN-Based Coatings

Effect of Addition of Mo or V on the Structure and Cutting Performance of AlCrN-Based Coatings

Composite Materials with Nanoscale Multilayer Architecture Based on Cathodic-Arc Evaporated WN/NbN Coatings

Effect of bilayer number on mechanical and wear behaviours of the AlCrN/AlCrMoN coatings by AIP method

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