A Review on the Enhancement of Mechanical and Tribological Properties of MCrAlY Coatings Reinforced by Dispersed Micro and Nanoparticles

Ali Zakeri, Elnaz Bahmani and Ali Ramazani
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Ali Zakeri: Department of Materials Science and Engineering, McMaster University, Hamilton, ON L8S 4L7, Canada
Elnaz Bahmani: Department of Materials Engineering, Tarbiat Modares University, Tehran 14115-143, Iran
Ali Ramazani: Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA

Energies, 2022, vol. 15, issue 5, 1-43

Abstract: The application of metal-matrix composite coatings for protecting and improving the service life of sliding components has demonstrated to have the potential of meeting the requirements of a diverse range of engineering industries. Recently, a significant body of research has been devoted to studying the mechanical and tribological performance of dispersion-strengthened MCrAlY coatings. These coatings belong to a class of emerging wear-resistant materials, offering improved properties and being considered as promising candidates for the protection of engineering structural materials exposed to tribological damage, especially at elevated temperature regimes. This paper attempts to comprehensively review the different reinforcements used in the processing of MCrAlY-based alloys and how they influence the mechanical and tribological properties of the corresponding coatings. Furthermore, the major fabrication techniques together with their benefits and challenges are also reviewed. Discussion on the failure mechanisms of these coatings as well as the main determining factors are also included. In addition, a comprehensive survey of studies and investigations in recent times are summarized and elaborated to further substantiate the review.

Keywords: metal matrix composites; MCrAlY; mechanical properties; tribological properties; wear; erosion; additive manufacturing (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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