High entropy alloy borides prepared by powder metallurgy process and the enhanced fracture toughness by addition of yttrium

Effect of Boronizing on the Microstructure and Mechanical Properties of CoCrFeNiMn High-Entropy Alloy

“…Furthermore, the properties of boronized CoCrFeNiMn alloys and diffusion behavior were investigated. This study could provide a reference for high hardness and high wear resistance HEA that could be used in a variety of industrial applications, such as the mold and crucible used in the cast aluminum industry [ 28 , 29 ], because the borides formed on the surface have high hardness, excellent corrosion resistance, and wear resistance [ 30 , 31 ], which allow HEA to be applied in special environments to increase service life.…”

Radiation shielding ability and optical features of La2O3+TiO2+Nb2O5+WO3+X2O3 (X=B, Ga, and In) glass system containing high-entropy oxides

“…The HEMs are a grade of material classified based on their high entropy value and possess qualities that are unique [ 1 ]. Yeh et al [ 2 ] and Cantor et al [ 3 ] conducted the first research on HEMs concurrently, demonstrating that it is possible to obtain multicomponent alloys of nearly equal molar content, defined by a single phase, and solid solution structure, which could be implemented for various groups of materials such as alloys, nitrides, oxides, diborides, carbides, and silicides [ [4] , [5] , [6] , [7] , [8] , [9] , [10] , [11] , [12] ]. Then, Ross et al demonstrated that the configurational irregularity could be utilized to obtain new oxide phases, enlarging the concept of high entropy alloys (HEAs) and introducing the concept of high entropy oxides (HEOs), which include five or more cations in an equimolar or near-equimolar mixture.…”

Mejoramiento de la resistencia a la corrosión de las mezclas de hierro e itrio mediante pulvimetalurgia

“…Existen estudios de la aleación mecánica en el sistema Fe-Al en una amplia gama de composiciones, mostrando la formación de compuestos intermetálicos basados en Fe y las transformaciones cristalinas y amorfas en consecuencia a diferentes etapas del proceso [5], el comportamiento del Óxido de Itrio (Y2O3) en partículas de polvo de Hierro (Fe) puro preparadas por aleación mecánica han revelado óxido de Itrio disuelto en la matriz de Hierro, que más tarde se reorganiza en porciones; llegando a generar que la molienda durante al menos 12 horas generando una adecuada homogeneidad [6][7]. Se han demostrado volúmenes atómicos "abiertos" que están presentes en el cerámico, concluyendo que especialmente las vacantes son responsables de producir una fase metaestable, por lo que el óxido de Itrio se disuelve en Hierro puro [8][9].…”