Since the discovery of HEOs, the field of high-entropy materials has expanded to include high-entropy metal diborides, high-entropy carbides, high-entropy sulfides, and high-entropy alumino-silicides. Following the discovery of HEOs in 2015, the field rapidly expanded. However, unlike HEAs, (MgNiCuCoZn) 0.2O contains an ordered anion sublattice. The cation site in (MgNiCuCoZn) 0.2O material is compositionally disordered, similar to HEAs. Similar to HEAs, (MgNiCuCoZn) 0.2O is a multicomponent single-phase material. The first HEO, (MgNiCuCoZn) 0.2O in a rock salt structure, was reported in 2015 by Rost et al. HEA research substantially accelerated in the 2010s. Some HEAs have been shown to possess desirable mechanical properties, such as retaining strength/hardness at high temperatures. HEAs are alloys of five or more principal metallic elements. In the realm of high-entropy materials, HEOs are preceded by high-entropy alloys (HEAs), which were first reported by Yeh et al. HEOs are currently being investigated for applications as functional materials. HEOs have been successfully synthesized in many structures, including fluorites, perovskites, and spinels. High-entropy oxides (HEOs) are complex oxides that contain five or more principal metal cations and have a single-phase crystal structure. Structure of high-entropy oxide (MgNiCoCuZn) 0.2O with site occupancies shown. JSTOR ( October 2020) ( Learn how and when to remove this template message).Please improve this article by adding secondary or tertiary sources.įind sources: "High entropy oxide" – news More than 10 universities are involved in this program.This article relies excessively on references to primary sources. The research ares of these projects are (1) Meet the future demands: multifaceted essence of high entropy materials, (2) Application research for high entropy superalloys in aerospace and energy industries, and investigate the underlying science of their critical properties, (3) Tailoring heterogeneous structure to enhance strength-ductility synergy in lightweight Ti-rich medium-entropy alloys with ultra-high specific strength, (4) Development and applications of advanced high-entropy piezoelectric catalyst in water resources treatment, (5) Development on the excellent performance of the lightweight high-entropy alloy CoCrNi(Si/Al), and (6) Development of the theory and industrial application of high-performance high-entropy materials used in high-frequency communication and optoelectronic components. The program will last for three years, and currently six research projects are sponsored. The main purpose of this program are to (1) promote innovation and deep academic research to keep Taiwan’s status in this area, (2) integrate the resources of facilities, manpower and budget to have an efficient development, (3) encourage team work and trains the further leaders for research and development in this area, and (4) asses the research outcomes for continued development and commercialization in the future. The objective of this program is to promote further breakthrough in this new class of materials. To maintain Taiwan’s leadership in these area, National Science and Technology Council of Taiwan initiates the Research Program on Fundamentals and Applications of High-Entropy Materials. In recent years, global research investments on HEAs and HEMs increased in a steady pace. The concept of High-Entropy Alloys (HEAs) and High-Entropy Materials (HRMs) originated from Taiwan about 20 years ago.
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