Fully Transparent Nanocomposite Coating with an Amorphous Alumina Matrix and Exceptional Wear and Scratch Resistance

Valant, Matjaž; Luin, Uroš; Fanetti, Mattia; Mavrič, Andraž; Vyshniakova, Kateryna; Siketić, Zdravko; Kalin, Mitjan

doi:10.1002/adfm.201600213

Cited by 19 publications

(11 citation statements)

References 43 publications

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“…The amorphous alumina matrix doped by dispersing rigid globular polycarbosilane macromolecules is reported to be a facile and low‐cost coating for different substrates. [ 77 ] The TEM image and SAED patterns confirm the fully amorphous structure of the alumina nanocomposite ( Figure a). In contrast to bare substrates, the wear volume of the coated sample only slightly increases with the applied load (Figure 8b).…”

Section: Mechanical Applicationsmentioning

confidence: 76%

“…At the same time, the thin amorphous alloys films show outstanding ductility, [ 25,74–76 ] which endows them great potential in the applications of wearable electronics, microscanners, and the coating layer. [ 27,28,76–78 ]…”

Section: Mechanical Applicationsmentioning

confidence: 99%

Section: Mechanical Applicationsmentioning

confidence: 99%

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Structures and Functional Properties of Amorphous Alloys

et al. 2020

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Amorphous alloys have attracted great attention due to their distinctive properties derived from unique packing structures. Recently, significant advances have been achieved for the understanding of structural characteristics and functional applications of amorphous alloys. Herein, an overview of the state of art of structure studies, accounting for the characteristics of amorphous alloys, are presented, and recent progresses in the functional applications of amorphous alloys are highlighted. The various structural models for the short‐range order, medium‐range order, and long‐range topological order for amorphous alloys are introduced. The functional applications in electrochemistry, mechanism, magnetism, optics, and biomedical engineering are presented in detail. The fundamental understanding of the correlations between structures and properties in amorphous alloys is discussed.

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Section: Mechanical Applicationsmentioning

confidence: 76%

Section: Mechanical Applicationsmentioning

confidence: 99%

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Structures and Functional Properties of Amorphous Alloys

et al. 2020

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“…Aluminium oxide (Al 2 O 3 ) or alumina has evoked significant research interest due to its use in technological and industrial applications, ranging from the field of aerospace [1], water treatment, filtration and cooling systems [2][3][4], medical and health care [5][6][7], to materials engineering [8][9][10]. Alumina coating on aluminium is known to improve wear resistance [11] and act as electrical and thermal insulation [12]. The material exhibits unique properties, such as e.g., high thermal conductivity, high hardness, and a good resistance to corrosion and abrasion [13].…”

Section: Introductionmentioning

confidence: 99%

Sintering of Alumina Nanoparticles: Comparison of Interatomic Potentials, Molecular Dynamics Simulations, and Data Analysis

Roy¹,

Prakash²,

Sandfeld³

2022

Preprint

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Sintering of alumina nanoparticles is of interest both from the view of fundamental research as well as for industrial applications. Atomistic simulations are tailor-made for understanding and predicting the time-and temperature-dependent sintering behaviour. However, the quality and predictability of such analysis is strongly dependent on the performance of the underlying interatomic potentials. In this work, we investigate and benchmark four empirical interatomic potentials and discuss the resulting properties and drawbacks based on experimental and density functional theory data from the literature. The potentials, which have different origins and formulations, are then used in molecular dynamics simulations to perform a systematic study of the sintering process. To analyse the results, we develop a number of tailored data analysis approaches that are able to characterise and quantify the sintering process. Subsequently, the disparities in the sintering behaviour predicted by the potentials are critically discussed. Finally, we conclude by providing explanations for the differences in performance of the potentials, together with recommendations for molecular dynamics sintering simulations of alumina.

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“…However, the recent attempts to apply the polysilanes in nanotechnologies have exposed insufficient understanding of their structural and physico-chemical parameters. Some problems that occurred are: in lithography line-edge roughness and resolution are affected by the polymer agglomeration 16 ; a thickness of polysilane-based hard coatings is limited by a polymer molecule/aggregate size 17 ; a size of SiC nanoparticles derived from the polycarbosilanes depends on dispersion of these molecules in precursor solutions 4 etc. All these purely technological problems have a similar origin, insufficient understanding of a true size distribution of the polymer molecules and their dispersion characteristics in different solvents.…”

mentioning

confidence: 99%

Molecular size and solubility conditions of polysilane macromolecules with different topology

Mavrič

Badasyan

Fanetti

et al. 2016

Sci Rep

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Solubility of polysilane macromolecules has so far been a scientific as well as technological problem due to a lack of understanding of their proper molecular size and agglomeration/de-agglomeration conditions. Here we show that, in contrary to previous reports, the polysilane molecules are inherently small enough to be, under right conditions, dissolved. We used a dynamic light scattering and a differential scanning calorimetry to show that even under a dilute regime the polymer molecules are agglomerated at room temperature and undergo de-agglomeration at slightly elevated temperatures of around 40 °C. The de-agglomeration results in formation of stable solutions of the polymer molecules of different topological structure in different organic solvents. We determined the polymer molecular sizes to be around 20 nm, much lower than previously reported. The measured molecular size was confirmed by transmission electron microscope imaging of the individual molecules.

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Fully Transparent Nanocomposite Coating with an Amorphous Alumina Matrix and Exceptional Wear and Scratch Resistance

Cited by 19 publications

References 43 publications

Structures and Functional Properties of Amorphous Alloys

Structures and Functional Properties of Amorphous Alloys

Sintering of Alumina Nanoparticles: Comparison of Interatomic Potentials, Molecular Dynamics Simulations, and Data Analysis

Molecular size and solubility conditions of polysilane macromolecules with different topology

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