Wear Maps and Models in Tribological Damage Analysis of Si3N4 Ceramics with Special Attention to Tribochemical Wear

Németh, Alexandra Kitti; Berkes, Maria Maros

doi:10.26649/musci.2017.079

Cited by 2 publications

(3 citation statements)

References 38 publications

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“…Since the film lubrication theory [39] was proposed, various films have been prepared to reduce the friction coefficient and wear rate, and the hardness and lubricating behavior of films are the main factors. Relations between hardness and wear models [40], as well as functional models [41], have been proposed as a purposeful and simple way to predict wear under those identified conditions. Evans and Marshall [42] were the first to estimate the wear of engineering ceramics with a lateral crack model in the case of a ball on a flat test configuration using a counterpart of a sharp radius.…”

Section: Design Considerationsmentioning

confidence: 99%

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Insight into the Mechanisms of Nitride Films with Excellent Hardness and Lubricating Performance: A Review

Wu,

Jiang,

et al. 2023

Nanomaterials

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Transition metal nitride (TMN) films with excellent hardness and lubricating performance are versatile low dimension materials, which are widely used in various fields including industries, transportation, aerospace, and so on. This paper introduces one film design strategy and provides a review of the mechanisms for strengthening and lubricating nitride films. The design strategy refers to two aspects which determine the structures, the performance, the components, and the chemical constitutions of nitride films The strengthening mechanisms of nitride films are then illuminated in detail, including the solid solution effect, the grain size effect, the secondary phase effect, the stress or stress field effect, the template effect, and the valence electron concentration effect. Five lubricating mechanisms are next summarized, including the easy-shear nature, the tribo-chemical reactions, the lubricious fluorides, the textured contact surface, and the synergistic effect. This paper aims to give a comprehensive introduction for understanding the mechanisms of strengthening and lubrication of nitride films for students and researchers, as well as to understand the current research progress in nitride films for exploring research gaps.

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Section: Design Considerationsmentioning

confidence: 99%

“…It is crucial to emphasize that the synergistic effect is not merely a simplistic combination of these strengthening mechanisms. Instead, the enhancement of hardness is a systematic and synergistic outcome [41], with the added benefit of facilitating film lubrication to some extent.…”

Section: The Synergistic Mechanismmentioning

confidence: 99%

Insight into the Mechanisms of Nitride Films with Excellent Hardness and Lubricating Performance: A Review

Wu,

Jiang,

et al. 2023

Nanomaterials

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“…The mechanical properties like hardness and fracture toughness of coatings also influences the dissipation of friction energy. An attempt is made to correlate friction energy with contact severity which incorporates mechanical properties of coatings [59,60]. Figure 13 shows plot of input frictional energy versus contact severity (CS), expressed as…”

Section: Friction Energy Mapmentioning

confidence: 99%

Friction energy map for sliding wear of Al₂O₃-TiO₂ and Cr₂O₃-TiO₂ coatings

Mehar¹,

Sapate²,

Vashishtha³

et al. 2021

Surf. Topogr.: Metrol. Prop.

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The present study deals with the development of friction energy map for plasma sprayed Al2O3-TiO2 and Cr2O3-TiO2 coatings. Al2O3-TiO2 and Cr2O3-TiO2 coatings were deposited by atmospheric plasma spray technique. The structural and mechanical properties of coatings were studied using Scanning Electron Microscopy (SEM), x-ray Diffraction (XRD) and Vickers macro and micro hardness test. Sliding wear tests were performed on coated specimens over a range of sliding speed and load using pin on disc test apparatus. The analysis of worn surface and wear debris was carried by SEM, XRD and Raman Spectroscopy. Cr2O3-TiO2 coating showed higher hardness and elastic modulus and relatively lower fracture toughness than Al2O3-TiO2 coating. Al2O3-TiO2 coatings exhibited 1.8 times better wear resistance and 11%–30% lower friction coefficient, as compared to Cr2O3-TiO2 coating, depending upon the wear test conditions. The reduction in friction coefficient and wear rate at higher sliding speed was due to the formation of tribofilms on worn surface. A good correlation was observed between friction energy and contact severity; which incorporates mechanical properties of coatings. Friction energy map was used to rationalize wear rates of Al2O3-TiO2 and Cr2O3-TiO2 coatings, for the identification of various wear regimes and failure modes of the coating.

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Wear Maps and Models in Tribological Damage Analysis of Si3N4 Ceramics with Special Attention to Tribochemical Wear

Cited by 2 publications

References 38 publications

Insight into the Mechanisms of Nitride Films with Excellent Hardness and Lubricating Performance: A Review

Insight into the Mechanisms of Nitride Films with Excellent Hardness and Lubricating Performance: A Review

Friction energy map for sliding wear of Al₂O₃-TiO₂ and Cr₂O₃-TiO₂ coatings

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Wear Maps and Models in Tribological Damage Analysis of Si3N4 Ceramics with Special Attention to Tribochemical Wear

Cited by 2 publications

References 38 publications

Insight into the Mechanisms of Nitride Films with Excellent Hardness and Lubricating Performance: A Review

Insight into the Mechanisms of Nitride Films with Excellent Hardness and Lubricating Performance: A Review

Friction energy map for sliding wear of Al2O3-TiO2 and Cr2O3-TiO2 coatings

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Product

Resources

About

Friction energy map for sliding wear of Al₂O₃-TiO₂ and Cr₂O₃-TiO₂ coatings