Ceramic coatings for extreme environments and energy systems: A review en en This paper provides a comprehensive review of wear-resistant ceramic coatings used in extreme environments, such as oil and gas operations, thermal barrier coatings, energy, and industrial applications. It explores various material classes, including oxides, carbides, nitrides, and borides, focusing on their thermal stability, mechanical strength, and resistance to oxidation and wear. The study discusses different deposition techniques, including chemical vapor deposition (CVD), physical vapor deposition (PVD), and plasma spraying, highlighting their advantages and challenges. Key challenges, including brittleness, adhesion issues, and high-temperature oxidation, are explained in detail, along with emerging solutions like high-entropy ceramics, self-healing materials, and computational modeling. The integration of smart monitoring systems and advanced fabrication methods is demonstrated as a promising way for optimizing the durability and performance of ceramic coatings. This review also aims to bridge the existing knowledge gaps, offering insights into the latest advancements and future directions in the development of high-performance ceramic coatings for extreme environments. 136 150 Farrokhfar Valizadeh Harzand Chemical Engineering Department University of Mohaghegh Ardabili, P.O. Box 179, Ardabil Iran Farrokh.valizadeh@student.uma.ac.ir Ehsan Samandizade Department of Mechanical Engineering Shiraz University, Shiraz Iran Amirhossein Yazdani Dizicheh Department of Mechanical Engineering Isfahan University of Technology, Isfahan Iran Ali Nematollahzadeh Chemical Engineering Department University of Mohaghegh Ardabili, P.O. 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