Underpinning the relationship between synthesis and properties of high entropy ceramics: A comprehensive review on borides, carbides and oxides

Synthesis of high entropy monoboride (Mo0.25W0.25Cr0.25Ta0.25)B powders with abundant twins from oxides

“…8 HECs can be categorized into various types, such as high-entropy oxide ceramics, high-entropy boride ceramics, and high-entropy carbide ceramics etc. 9 Among these, highentropy monoboride ceramics have received increased attention as they have been relatively underexplored. Due to their strong covalent B-B and M-B bonds, monoboride ceramics (MB, M = transition metal) have been predicted to possess exceptional hardness and have the potential to become new superhard materials.…”

“…Although high‐entropy ceramics (HECs) are a promising choice for UHTCs, their development is still in the early stages leaving much room for further exploration 8 . HECs can be categorized into various types, such as high‐entropy oxide ceramics, high‐entropy boride ceramics, and high‐entropy carbide ceramics etc 9 . Among these, high‐entropy monoboride ceramics have received increased attention as they have been relatively underexplored.…”

Synthesis and Characterization of High-Purity, High-Entropy Diboride Ceramic Powders by a Liquid Phase Method

“…Generally, the HEB materials were difficult to densify due to a low self-diffusion rate and the presence of impurities [13]. Therefore, the synthesis of high-entropy metal diboride powders is essential for excellentperformance ceramics, with current research predominantly focused on transition metals from groups IVB, VB, and VIB [14,15]. In 2016, Joshua Gild et al [16] made the pioneering effort to prepare seven quinary boride ceramic bulk materials, including (Hf, Zr, Ta, Nb, Ti)B 2 , (Hf, Zr, Ta, Mo, Ti)B 2 , (Hf, Zr, Mo, Nb, Ti)B 2 , (Hf, Mo, Ta, Nb, Ti)B 2 , (Mo, Zr, Ta, Nb, Ti)B 2 , (Hf, Zr, W, Mo, Ti)B 2 , and (Hf, Zr, Ta, Cr, Ti)B 2 .…”