Study on the wear resistance of graphene modified nanostructured Al2O3/TiO2 coatings

Wang, Lan; Liu, Saiyue; Gou, Junfeng; Zhang, Qiwen; Zhou, Feifei; Wang, You; Chu, Ruiqing

doi:10.1016/j.apsusc.2019.06.102

Cited by 44 publications

(11 citation statements)

References 24 publications

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“…Graphene is often employed in the manufacture of protective coatings with high abrasion resistance, both as a single monolayer [69] and as a filler for composite coatings [70][71][72]. In fact, strong mechanical resistance and excellent lubricating properties are remarkable features possessed by graphene, and are often required in coatings that have to resist certain stresses or maintain their integrity in particularly aggressive environments.…”

Section: Scratching Afm Analysismentioning

confidence: 99%

Effects of Graphene-Based Fillers on Cathodic Delamination and Abrasion Resistance of Cataphoretic Organic Coatings

et al. 2020

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This study aims to demonstrate the excellent protective performance of functionalized graphene oxide (fGO) flakes in acrylic cataphoretic coatings. The filler content provides an important contribution in improving the chemical and mechanical resistance of the acrylic matrix. The morphology of the fillers was first investigated by optical and electron microscopy, analysing the distribution of the fGO flakes within the polymer matrix. After that, the flakes were added to the cataphoretic bath in different concentrations, resulting in four series of samples. The cathodic delamination of the coatings was assessed with cathodic polarization cycles and with measurements carried out with a scanning Kelvin probe. Finally, the abrasion resistance at the macroscopic and microscopic level was studied by scrub testing and scratching atomic force microscopy analysis, respectively. The incorporation of fGO at the optimized concentration of 0.2 wt.% greatly increases the cathodic delamination resistance of the acrylic matrix, resulting in an effective barrier against the effects of absorbed aggressive substances. Graphene-based fillers also enhance abrasion resistance, thanks to their high mechanical strength. Thus, this work demonstrates the great protective benefits that can be obtained when using fGO flakes as reinforcing fillers in cataphoretic coatings.

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Section: Scratching Afm Analysismentioning

confidence: 99%

Effects of Graphene-Based Fillers on Cathodic Delamination and Abrasion Resistance of Cataphoretic Organic Coatings

et al. 2020

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“…Taber Abrasion tests of the coatings were done following the ASTM D4060‐15 standard. [ 28 ] This coating and testing method is easy to generalize on some special paper or textiles. The capability for abrasion resistance can be evaluated in three approaches: weight loss as a defined figure of cycles, weight loss per cycle, or decreasing of per unit of coating thickness at a delimited number of cycles.…”

Section: Resultsmentioning

confidence: 99%

Tough and Strong Waterborne Polyurethane Network Combined with Sub‐Nanoscaled Calcium Phosphate Oligomers for Protective Coating

Luo

Chen

et al. 2022

Macro Materials & Eng

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The optimal design of high wear‐resistance and durability of coatings using organic–inorganic interpenetrating networks has been a long‐term goal of researchers. Although some progress has been made in the modification of waterborne polyurethanes (WPU), there are still significant challenges in fabricating more durable polyurethane‐based protective coatings from the perspective of structural design at a molecular level. Here, a sub‐nanoscaled (<1 nm) inorganic calcium phosphate oligomer (CPO) is used to carry out organic–inorganic hybrid cross‐linking in a WPU network and precisely regulate the structure of the macromolecular network at the molecular level. The herein‐produced CPO‐WPU hybrid coating shows excellent wear resistance and water resistance. Taber abrasion tests demonstrate that the CPO‐WPU coating can be capable of 15 500 turns at a load of 750 g, 2.2 times that of pure WPU coating, and the water‐resistance of CPO‐WPU coating is significantly improved compared with WPU coating due to its well‐integrated organic–inorganic network. Overall, the CPO‐WPU coating material significantly improves the mechanical strength, wear‐resistance, and water‐resistance, compared with the original WPU coating and other modified polyurethane. This hybrid coating can provide a potential application in paper‐making, textiles, and furniture due to its unique organic–inorganic network, low cost, and green process.

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“…Graphene-modified Al 2 O 3 /TiO 2 coatings have a 20–25% lower wear rate than non-graphene coatings. 151 Zuo et al 152 also observed an improvement in the wear resistance of a micro-arc oxidation (MAO) coating prepared on Ti-6Al-4 V alloy with GO. They found that the MAO coating with 10 mL/L GO had comparatively superior tribo-corrosion resistance, with fewer microcracks but a smoother worn surface than that of 5- and 15-mL/L GO coatings (Fig.…”

Section: Applications Of Graphenementioning

confidence: 96%

Graphene Properties, Synthesis and Applications: A Review

Urade

Lahiri

Suresh

2022

JOM

114

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We have evaluated some of the most recent breakthroughs in the synthesis and applications of graphene and graphene-based nanomaterials. This review includes three major categories. The first section consists of an overview of the structure and properties, including thermal, optical, and electrical transport. Recent developments in the synthesis techniques are elaborated in the second section. A number of top–down strategies for the synthesis of graphene, including exfoliation and chemical reduction of graphene oxide, are discussed. A few bottom–up synthesis methods for graphene are also covered, including thermal chemical vapor deposition, plasma-enhanced chemical vapor deposition, thermal decomposition of silicon, unzipping of carbon nanotubes, and others. The final section provides the recent innovations in graphene applications and the commercial availability of graphene-based devices.

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Study on the wear resistance of graphene modified nanostructured Al2O3/TiO2 coatings

Cited by 44 publications

References 24 publications

Effects of Graphene-Based Fillers on Cathodic Delamination and Abrasion Resistance of Cataphoretic Organic Coatings

Effects of Graphene-Based Fillers on Cathodic Delamination and Abrasion Resistance of Cataphoretic Organic Coatings

Tough and Strong Waterborne Polyurethane Network Combined with Sub‐Nanoscaled Calcium Phosphate Oligomers for Protective Coating

Graphene Properties, Synthesis and Applications: A Review

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