Enhancement of Oxidation Resistance of Graphite Foams by Polymer Derived-silicon Carbide Coating for Concentrated Solar Power Applications

Kim, T.; Singh, Dileep; Singh, Mrityunjay

doi:10.1016/j.egypro.2015.03.170

Cited by 12 publications

(7 citation statements)

References 20 publications

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“…Nevertheless, its superior mechanism of lubrication has compelled researchers to look for a way to stabilize graphite at higher temperatures [ 56 ]. Coating graphite with a ‘protective barrier’ of W, Re, Mo, Nb, Hf, Ti, Zr, their oxides, silicides, borides, carbides, nitrides, and the respective composites, which would rather hinder its contact with atmospheric oxygen and thus, improve oxidation resistance is seen [ 55 , 56 , 57 ]. Amongst which, SiC [ 56 ] and MoSi 2 [ 58 ] are the most efficient at HT oxidation.…”

Section: Potential High-temperature Solid-lubricantsmentioning

confidence: 99%

“…Coating graphite with a ‘protective barrier’ of W, Re, Mo, Nb, Hf, Ti, Zr, their oxides, silicides, borides, carbides, nitrides, and the respective composites, which would rather hinder its contact with atmospheric oxygen and thus, improve oxidation resistance is seen [ 55 , 56 , 57 ]. Amongst which, SiC [ 56 ] and MoSi 2 [ 58 ] are the most efficient at HT oxidation. Admirable lubrication without adsorption of water vapors and oxidation of graphite fluoride (CF x ) n was earlier reported in [ 59 ], whereas the formation of a lubricious glazed layer in the presence of humid air accounted for the decrease in CoF and the wear in Fe-Cu-Sn alloy with 3 wt% graphite content at 423 K [ 59 ].…”

Section: Potential High-temperature Solid-lubricantsmentioning

confidence: 99%

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Solid Lubrication at High-Temperatures—A Review

et al. 2022

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Understanding the complex nature of wear behavior of materials at high-temperature is of fundamental importance for several engineering applications, including metal processing (cutting, forming, forging), internal combustion engines, etc. At high temperatures (up to 1000 °C), the material removal is majorly governed by the changes in surface reactivity and wear mechanisms. The use of lubricants to minimize friction, wear and flash temperature to prevent seizing is a common approach in engine tribology. However, the degradation of conventional liquid-based lubricants at temperatures beyond 300 °C, in addition to its harmful effects on human and environmental health, is deeply concerning. Solid lubricants are a group of compounds exploiting the benefit of wear diminishing mechanisms over a wide range of operating temperatures. The materials incorporated with solid lubricants are herein called ‘self-lubricating’ materials. Moreover, the possibility to omit the use of conventional liquid-based lubricants is perceived. The objective of the present paper is to review the current state-of-the-art in solid-lubricating materials operating under dry wear conditions. By opening with a brief summary of the understanding of solid lubrication at a high temperature, the article initially describes the recent developments in the field. The mechanisms of formation and the nature of tribo-films (or layers) during high-temperature wear are discussed in detail. The trends and ways of further development of the solid-lubricating materials and their future evolutions are identified.

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Section: Potential High-temperature Solid-lubricantsmentioning

confidence: 99%

Section: Potential High-temperature Solid-lubricantsmentioning

confidence: 99%

Solid Lubrication at High-Temperatures—A Review

et al. 2022

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“…These factors limit the use of graphite to moderate temperature applications. The deposition of anti-oxidant coatings and plasma deposition techniques can prevent the oxidation of graphite at HT, which is not viable from an economic point of view [ 160 , 161 ].…”

Section: Applications and Challengesmentioning

confidence: 99%

Self-Lubricating Materials for Extreme Condition Applications

John

Menezes

2021

Materials

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Lubrication for extreme conditions, such as high temperature, cryogenic temperature, vacuum pressure, high load, high speed, and corrosive environments, is a continuing challenge among tribologists and space engineers due to the inadequate friction and wear properties of liquid lubricants. As a result, tremendous research effort has been put forward to study lubrication mechanisms for various machine elements under challenging conditions over the past two decades. Self-lubricating materials have been most widely used for adequate lubrication in extreme conditions in recent years. This review paper presents state-of-the-art of materials for lubrication in extreme condition applications in aerospace, automotive, and power generation areas. More specifically, solid lubricants dispersed in various matrices for lubrication application were analyzed in-depth under challenging conditions. This study also reports the self-lubricating materials and their lubrication mechanisms. Finally, various applications and challenges of self-lubricating materials were explored.

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“…In contrast to the mediumtemperature application, however, the excellent lubrication performance and economic efficiency also enable the potential utilization of graphite at higher temperature lubricant fields, which otherwise requires a significant improvement of the poor oxygen resistance. In order to ameliorate the oxygen resistance behavior, therefore, extensive research has been performed to establish fundamentals in stabilizing the graphite at high temperatures [24][25][26][27][28][29]. So far, various approaches have been proposed to realize this improvement by depositing anti-oxidation ceramic coatings on graphite substrate via complicated and costly methods, like pack concentration, plasma spraying, slurry-sintering, low-pressure chemical vapor deposition, and hydrothermal electrophoretic deposition.…”

Section: Introductionmentioning

confidence: 99%

Graphite-based solid lubricant for high-temperature lubrication

2020

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High-temperature solid lubricants play a significant role in the hot metal forming process. However, preparing high-temperature solid lubricant is formidably challenging due to the stern working conditions. Here we successfully develop a new type of eco-friendly high-temperature graphite-based solid lubricant by using amorphous silica dioxide, aluminum dihydrogen phosphate, and solid lubricant graphite. The solid lubricating coating exhibits excellent tribological properties with a very low friction coefficient and good wear protection for workpiece at high temperature under the air atmosphere. An array of analytical techniques reveals the existence of solid lubricant graphite in the lubricating coating after the high-temperature friction test. A synergistic effect between the protective surface film and the solid lubricant graphite is proposed to account for such superior lubricating performance. This work highlights the synergistic effect between the protection layer and the lubricant graphite and further provides the insight in designing the high-temperature solid lubricant.

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Enhancement of Oxidation Resistance of Graphite Foams by Polymer Derived-silicon Carbide Coating for Concentrated Solar Power Applications

Cited by 12 publications

References 20 publications

Solid Lubrication at High-Temperatures—A Review

Solid Lubrication at High-Temperatures—A Review

Self-Lubricating Materials for Extreme Condition Applications

Graphite-based solid lubricant for high-temperature lubrication

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