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About this Research Topic

Abstract Submission Deadline 31 December 2022
Manuscript Submission Deadline 30 April 2023

The tribological issue is regarded as the core damage forms causing the troubles and failure of equipment. Especially in harsh conditions (e.g. high temperature, cryogenic, corrosive medium, vacuum, radiation, and so on), severe friction and wear would take place between contact pairs, which can lead to significant degradation in the service life of critical components. The common situations can result in operating equipment having to be shut down frequently to replace failure parts. This would not only influence the regular operation but also threaten the working security. Consequently, it is necessary to improve the adaptability and durability of key mechanical parts in extreme environments.

It is an effective way to improve material properties or contact states to increase the wear resistance of critical components in extreme environments. At present, coating spraying technology has been widely used, such as thermal spraying, cold spraying, plasma spraying, etc. Meanwhile, atomic deposition, laser cladding and other new surface modification technologies are also emerging. These technologies drive the development of coating materials. In recent years, metallic and non-metallic wear-resistant materials have developed rapidly, and new alloy powders have been gradually invented and initially evaluated in basic anti-wear and corrosion applications such as high-entropy alloys. On the other hand, 2D materials (graphene, Mxene, etc.) show obvious advantages and great application potential in friction contact systems, whether as lubricant additives or material functional enhancement phases. In response to various extreme conditions, the design and simulation experiments have been gradually improved, and the application of new auxiliary technologies will help to characterize the material properties comprehensively and accurately under the working conditions, which has accelerated the design, process technology and testing methods of advanced wear-resistant materials to the innovation stage.

Therefore, this Research Topic aims at the latest progress of advanced wear-resistant materials under extreme environments, involving matrix materials, coating technologies, lubricating media, and characterization of wear behavior and mechanisms. Original Research and Review articles related to this subject are all welcome. The subtopics of interest include but are not limited to the following areas.
• Processing of various advanced materials for extreme environments, including metals & alloys, ceramics, polymer materials, and composites
• Design studies, experimental investigations, and theoretical analysis relevant to the application of materials for extreme environments
• Properties characterization of conventional and newly emerging material systems under extreme environments
• Friction-reducing and wear-resisting mechanism of nanomaterials in the material system or contact interface
• Failure laws and mechanisms of advanced wear-resistant materials under single or coupled conditions

Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.

The tribological issue is regarded as the core damage forms causing the troubles and failure of equipment. Especially in harsh conditions (e.g. high temperature, cryogenic, corrosive medium, vacuum, radiation, and so on), severe friction and wear would take place between contact pairs, which can lead to significant degradation in the service life of critical components. The common situations can result in operating equipment having to be shut down frequently to replace failure parts. This would not only influence the regular operation but also threaten the working security. Consequently, it is necessary to improve the adaptability and durability of key mechanical parts in extreme environments.

It is an effective way to improve material properties or contact states to increase the wear resistance of critical components in extreme environments. At present, coating spraying technology has been widely used, such as thermal spraying, cold spraying, plasma spraying, etc. Meanwhile, atomic deposition, laser cladding and other new surface modification technologies are also emerging. These technologies drive the development of coating materials. In recent years, metallic and non-metallic wear-resistant materials have developed rapidly, and new alloy powders have been gradually invented and initially evaluated in basic anti-wear and corrosion applications such as high-entropy alloys. On the other hand, 2D materials (graphene, Mxene, etc.) show obvious advantages and great application potential in friction contact systems, whether as lubricant additives or material functional enhancement phases. In response to various extreme conditions, the design and simulation experiments have been gradually improved, and the application of new auxiliary technologies will help to characterize the material properties comprehensively and accurately under the working conditions, which has accelerated the design, process technology and testing methods of advanced wear-resistant materials to the innovation stage.

Therefore, this Research Topic aims at the latest progress of advanced wear-resistant materials under extreme environments, involving matrix materials, coating technologies, lubricating media, and characterization of wear behavior and mechanisms. Original Research and Review articles related to this subject are all welcome. The subtopics of interest include but are not limited to the following areas.
• Processing of various advanced materials for extreme environments, including metals & alloys, ceramics, polymer materials, and composites
• Design studies, experimental investigations, and theoretical analysis relevant to the application of materials for extreme environments
• Properties characterization of conventional and newly emerging material systems under extreme environments
• Friction-reducing and wear-resisting mechanism of nanomaterials in the material system or contact interface
• Failure laws and mechanisms of advanced wear-resistant materials under single or coupled conditions

Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.

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