Tribological Performance of Polymer Composite Coatings Modified With La2O3 and MoS2 Nanoparticles

Zhang, Dongya; Li, Zhongwei; Gao, Feng; Wei, Xian Yong; Ni, Yuquan

doi:10.1115/1.4044465

Cited by 12 publications

(2 citation statements)

References 42 publications

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“…Figure 1 presents a scanning electron microscopy (SEM) image showcasing an aluminumbased composite reinforced with lanthanum oxide (La2O3). Notably, the image highlights the uniform distribution of La2O3 within the composite matrix, a crucial factor determining the material's mechanical and functional properties [41].SEM imaging offers invaluable insights into the microstructure of composite materials, enabling researchers to assess the dispersion and interfacial bonding between the reinforcement particles and the matrix. In the case of the aluminum-based composite reinforced with La2O3, the SEM image reveals a homogeneous distribution of La2O3 particles throughout the aluminum matrix.…”

Section: Microstructure Investigationmentioning

confidence: 99%

Advancements in Aluminum-Based Composite Manufacturing: Leveraging La2O3 Reinforcement through Friction Stir Process

Kareem,

Raju,

et al. 2024

E3S Web of Conf.

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This study investigates the advancements in Aluminum-Based Composite Manufacturing through the incorporation of lanthanum oxide (La2O3) reinforcement using the Friction Stir Process (FSP). The pivotal role of precision machining, particularly the vertical milling machine, in executing FSP is emphasized. Specific parameters, including pin diameter, tool tilt angle, and rotational speed, were meticulously selected to ensure optimal performance. The uniform distribution of La2O3 particles within the composite matrix highlights the effectiveness of the fabrication process, indicating proper mixing and dispersion techniques. Experimental findings reveal significant improvements in mechanical properties, with a notable 22.78% enhancement in tensile strength, a significant 35.21% increase in hardness, a noteworthy 24.44% improvement in fatigue strength, and a substantial 28.68% increase in wear resistance observed in aluminum-La2O3 composites produced via FSP. These results underscore the potential of leveraging FSP for aluminum-based composite manufacturing, offering opportunities for the development of high-performance materials with enhanced mechanical properties and durability.

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Section: Microstructure Investigationmentioning

confidence: 99%

Advancements in Aluminum-Based Composite Manufacturing: Leveraging La2O3 Reinforcement through Friction Stir Process

Kareem,

Raju,

et al. 2024

E3S Web of Conf.

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“…Furthermore, the fillers (NbSe 2 and MoO 3 ) contribute to the generation of transfer film, resulting in a reduction in the coefficient of friction (80% and 47.5%) [12,13]. Spherical nanomaterials and lamellar nanomaterials are commonly used as fillers to enhance the tribological properties of epoxy resin coatings, such as TiO 2 [14,15], SiO 2 [16,17], MoS 2 [18,19], graphene [20][21][22], etc However, the mechanisms of spherical nanomaterials and lamellar nanomaterials improving the tribological properties of epoxy coatings are different. Liu et al [23] used functionalized graphene to improve the tribological performance of epoxy coatings.…”

Section: Introductionmentioning

confidence: 99%

Shape influence on the tribological properties of hexagonal boron nitride nanoplates and nanospheres reinforced epoxy coating

Wu¹,

Zhao²,

Ci³

et al. 2022

Surf. Topogr.: Metrol. Prop.

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Hexagonal boron nitride was known for its excellent lubricating capacity, however, the shape influence on the tribological properties of hexagonal boron nitride modified epoxy composite coatings was still a challenging requirement. Herein, the boron nitride nanoplates (BNNP) and nanospheres (BNNS) were modified by polydopamine to improve their dispersion in epoxy coatings and the shape influence of two nanoparticles on the tribological property was proved by the micro-morphologies of wear debris. When the mass content of polydopamine-modified BNNS was 0.25 wt. %, the friction-reduction and anti-wear effects were the best, and the coefficient of friction and wear rate was reduced by 13.75% and 60.77%, respectively, compared with the pure epoxy coating. The “ball effect” of BNNS provided rolling friction and the layer-structured debris exhibited good lubricating properties. The enhanced wear mechanism of BNNS provided wider potential application in the mechanical industry, automotive, aerospace, and infrastructure fields.

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Layered 2D Nanomaterials to Tailor Friction and Wear in Machine Elements—A Review

Marian

Berman

Rota

et al. 2021

Adv Materials Inter

113

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prominent members being molybdenum disulfide (MoS 2 ) and tungsten disulfide (WS 2 ). [2] In addition to graphene-and TMD-based nanomaterials, new 2D nanomaterials [3] such as silicenes, [4] hexagonal boron nitride (h-BN), [5] black phosphorous (BP), [6,7] halide structures, [8] metal-organic framework nanosheets, [9] and MXenes [10,11] are currently optimized regarding their synthesis methods and expectable yield. The coupling of excellent electrical and thermal conductivity with great mechanical properties, high surface-to-volume ratios, and the existence of surface terminations, which enable their chemical functionalization, has made these 2D nanomaterials promising candidates to be used in different applications such as energy storage devices and supercapacitors, [12] (photo)-catalysis, [13] water purification, [14] and tribological systems. [15][16][17][18] In the tribological context, 2D layered structures showed their great potential in improving friction and wear of various substrate materials under dry and lubricated conditions. With respect to the lubricated conditions, 2D materials are typically used as lubricant additives in base oils with the overall purpose to fulfill different functions in the contact area. During sliding, nanomaterials may act both as shearing films and nano-roller bearings, thus potentially changing the friction mode from sliding to rolling friction and regulating the resulting lubricant flow, thus reducing frictional losses. [19] Irrespective of the prevalence of dry or lubricated conditions, 2D materials may be capable of initiating tribo-chemical reactions in the contact area Recent advances in 2D nanomaterials, such as graphene, transition metal dichalcogenides, boron nitride, MXenes, allow not only to discover several new nanoscale phenomena but also to address the scientific and industrial challenges associated with the design of systems with desired physical properties. One of the great challenges for mechanical systems is associated with addressing friction and wear problems in machine elements. In this review, the beneficial properties of layered 2D materials that enable the control of their tribological behavior and make them excellent candidates for efficient friction and wear reduction in dry-running and boundary lubricated machine components are summarized. The recent studies highlighting the successful implementation of 2D structures when used as solid lubricant coatings or reinforcement phases in composites for various machine components including sliding and rolling bearings, gears, and seals are overviewed. The examples presented in the studies demonstrate the great potential for 2D materials to address the energy-saving needs by friction and wear reduction.

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Tribological Performance of Polymer Composite Coatings Modified With La2O3 and MoS2 Nanoparticles

Cited by 12 publications

References 42 publications

Advancements in Aluminum-Based Composite Manufacturing: Leveraging La2O3 Reinforcement through Friction Stir Process

Advancements in Aluminum-Based Composite Manufacturing: Leveraging La2O3 Reinforcement through Friction Stir Process

Shape influence on the tribological properties of hexagonal boron nitride nanoplates and nanospheres reinforced epoxy coating

Layered 2D Nanomaterials to Tailor Friction and Wear in Machine Elements—A Review

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