Correlation between nano-scale friction and wear of boron carbide films deposited by dc-magnetron sputtering

Prioli, R.; Reigada, D. C.; Freire, F. L.

doi:10.1063/1.124687

Cited by 26 publications

(9 citation statements)

References 12 publications

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“…However, for higher P N2 , the deposition rate decreases. Similar behavior was observed for films deposited at different bias voltages applied to the substrate [21]. This can be explained by the fact that the introduction of small quantities of nitrogen in the chamber atmosphere opens a new channel for target sputtering.…”

Section: Structural Characterizationsupporting

confidence: 59%

“…We suggested that a similar process occurs in nano-scale [21] for the B 4 C films. We might expect the formation of a modified layer at the interface due to local heating during tip-surface interaction.…”

Section: Nanotribological Propertiesmentioning

confidence: 88%

“…However, despite all these efforts to overcome the high residual stress limitation of these films, the study of the nanotribological properties of B 4 C and BCN films is still very limited [21][22][23][24]. The aim of this work is to review our recent results on boron carbide (B 4 C) and boron carbon nitride films (BC x N y ) deposited by dc-magnetron sputtering.…”

Section: Introductionmentioning

confidence: 99%

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Boron Carbide and Boron-Carbon Nitride Films Deposited by DC-Magnetron Sputtering: Structural Characterization and Nanotribological Properties

Freire

Reigada

Prioli

2001

phys. stat. sol. (a)

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The effects of nitrogen incorporation into amorphous boron carbide (B 4 C) films were studied. The films were deposited by dc-magnetron sputtering with the Si substrates at room temperature. The nitrogen incorporation occurs at the expense of the boron content. The main feature of infrared absorption spectra obtained from B 4 C films is a broad band at around 1100 cm --1 that shifts to higher wavenumbers upon nitrogen incorporation. The spectra obtained from films with higher nitrogen content are typical of hexagonal boron nitride. The friction coefficient and the surface wear were studied by lateral force microscopy. The influence of several parameters like relative humidity, scanning velocity and load force was investigated. For boron-carbon nitride films, a weak dependence on the relative humidity of wear and friction coefficients was observed. In the case of B 4 C films, there is a clear correlation between the wear depth and the energy deposited at the AFM tip-film interface.

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Section: Structural Characterizationsupporting

confidence: 59%

Section: Nanotribological Propertiesmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

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Boron Carbide and Boron-Carbon Nitride Films Deposited by DC-Magnetron Sputtering: Structural Characterization and Nanotribological Properties

Freire

Reigada

Prioli

2001

phys. stat. sol. (a)

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“…Nonetheless, in the study by Erdemir et al the formation of boron oxide and boric acid did strongly correlate with a substantial reduction in the sliding friction coefficient [20]. Furthermore, a study by Prioli et al of boron carbide films using AFM indicated that the formation of a lubricant film at the contact interface was responsible for dissipation of frictional energy and a reduction in the overall friction [21]. A significant reduction in the coefficient of friction was also observed in the lubricated condition, as evident in figure 2.…”

Section: Surface Oxidationmentioning

confidence: 90%

Effects of lubrication and humidity on the abrasiveness of a thin boron carbide coating

et al. 2005

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Studies using thin boron carbide (B 4 C) coatings have previously been performed in order to investigate their potential use as finite-life run-in coatings. Such coatings have been shown to polish the mating surface in a relatively short time. The inherent ability of these coatings to polish can potentially allow them to function as finite-life run-in coatings. Employing such coatings requires a thorough understanding of the parameters which directly influence the changes that occur in the coating abrasiveness throughout the duration of the polishing process. In past studies, changes in the coating abrasiveness during dry sliding wear under ambient conditions have been investigated. However, both lubrication and humidity can strongly influence the abrasive wear process. In this study, the influences of the operating environment, namely humidity and lubrication, on the coating abrasiveness are directly investigated. The coating abrasiveness decreases at a slower rate when a lubricant is added and when the humidity decreases.

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“…All these unique properties have attracted great X.F. Zhang BO 3 , and further understanding the lubricant behavior in frictional wear [1][2][3][4][5]. In this letter, core/shell Ni/H 3 BO 3 nanoparticles are synthesized by arc discharge based on the stoichiometric oxygen-assisted vapor-liquidsolid mechanism [6].…”

mentioning

confidence: 98%

Direct observation of low-temperature catalytic decomposition of H3BO3 shell in core/shell Ni/H3BO3 nanoparticles

2012

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Decomposition of H 3 BO 3 to B 2 O 3 in core/shell Ni/H 3 BO 3 nanoparticles was in situ recorded by transmission electron microscope as the irradiation time. The direct observation provides compelling evidence of the synergetic effect of the Ni core and the H 3 BO 3 shell, revealing the catalytic mechanisms of metal nanostructures that induce the decomposition at 124°C, lower than the bulk counterpart at 300°C. This phenomenon can be theoretically explained by considering the weakening of B-O bond at the Ni-H 3 BO 3 interface, and has important implications in understanding the lubricant behavior of H 3 BO 3 in frictional wear.Boric acid (H 3 BO 3 ) is usually a triclinic crystal structure consisting of a stack of crystallized layers in which atoms tightly adhere to each other. These layers stack themselves relatively far apart with weak shear strength, so that it becomes a potential solid lubricant due to the unique natural structure. It can decompose to boric oxide (B 2 O 3 ) at above 300°C, and recover spontaneously when re-exposed in moist air. All these unique properties have attracted great

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Correlation between nano-scale friction and wear of boron carbide films deposited by dc-magnetron sputtering

Cited by 26 publications

References 12 publications

Boron Carbide and Boron-Carbon Nitride Films Deposited by DC-Magnetron Sputtering: Structural Characterization and Nanotribological Properties

Boron Carbide and Boron-Carbon Nitride Films Deposited by DC-Magnetron Sputtering: Structural Characterization and Nanotribological Properties

Effects of lubrication and humidity on the abrasiveness of a thin boron carbide coating

Direct observation of low-temperature catalytic decomposition of H3BO3 shell in core/shell Ni/H3BO3 nanoparticles

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