Design and synthesis of chemically complex ceramics from the perspective of entropy

J. Liu; G. Shao; D. Liu; K. Chen; K. Wang; B. Ma; K. Ren; Y. Wang

Materials Today Advances (Dec 2020)

Design and synthesis of chemically complex ceramics from the perspective of entropy

J. Liu,
G. Shao,
D. Liu,
K. Chen,
K. Wang,
B. Ma,
K. Ren,
Y. Wang

Affiliations

J. Liu: State Key Laboratory of Traction Power & School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, China; Corresponding author.
G. Shao: School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, Henan 450001, China
D. Liu: School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, China
K. Chen: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing, 102206, China
K. Wang: School of Mechanical Engineering, Dongguan University of Technology, Dongguan, Guangdong, 523808, China
B. Ma: School of Mechanical Engineering, Dongguan University of Technology, Dongguan, Guangdong, 523808, China
K. Ren: Institute of Advanced Structure Technology, Beijing Institute of Technology, Haidian District, Beijing, 100081, China
Y. Wang: Institute of Advanced Structure Technology, Beijing Institute of Technology, Haidian District, Beijing, 100081, China; Corresponding author.

Journal volume & issue: Vol. 8
p. 100114

Abstract

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High-entropy ceramics (HECs) have rapidly expanded from high-entropy oxides to high-entropy ultrahigh temperature ceramics/coatings and have drawn extensive attention in the field of ceramics. In addition, high-entropy thermoelectric materials focus on the topic of energy, which is another major driving force to accelerate the development of HECs. In this review, the recent progress on the design and synthesis of chemically complex ceramics is summarized. The fundamental understanding of configurational entropy, phase stability, and formation criterion of HECs are discussed. Critical comments on the compositionally complex ceramics and mixed-valence complex ceramics are presented. The synthesis methods of HECs are summarized, and reactive flash sintering is highlighted as a new strategy to synthesize HECs. The new design ideas and synthesis methods can provide more opportunities to develop high-performance HECs to meet the requirements of cutting-edge applications.

Published in Materials Today Advances

ISSN: 2590-0498 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/materials-today-advances

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