Eutectic high-entropy oxide powder material and preparation method thereof

A technology of oxide powder and bulk material is applied in the field of dual-phase Mnx1-xO high-entropy oxide material and its preparation, and eutectic high-entropy oxide powder material, which can solve the problem of not finding eutectic high-entropy oxide and so on. , to achieve uniform product composition and microstructure, controllable grain size, and controllable specific surface area.
CN110526706AActive Publication Date: 2019-12-03ANHUI UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ANHUI UNIVERSITY OF TECHNOLOGY
Publication Date
2019-12-03

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Abstract

The invention provides an eutectic high-entropy oxide powder material and a preparation method thereof, and belongs to the technical field of high-entropy oxide powder materials. The molecular formulaof the eutectic high-entropy oxide is Mn<x>(CoMgNiZn)<1-x>O (the value of x is 0.1-0.7). The proportion of a rock salt phase and a spinel phase in the eutectic high-entropy oxide is adjusted by changing the proportion of metal cations, so that certain physical and chemical properties are customized, and certain special use requirements are met. Meanwhile, the eutectic high-entropy alloy powder material is prepared by adopting a solution combustion synthesis method with simple reaction process, and liquid-phase material blending is adopted in the preparation process, so that the raw materialsare uniformly mixed at a molecular level, the uniformity of final product composition and microstructures is ensured, and the specific surface area and grain size of the prepared eutectic high-entropyoxide powder material are controllable.
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Description

technical field

[0001] The invention relates to the technical field of high-entropy oxide powder materials, in particular to a eutectic high-entropy oxide powder material, specifically a dual-phase Mn with rock salt and spinel structures x (CoMgNiZn) 1-x O high entropy oxide materials and methods for their preparation. Background technique

[0002] In recent years, material researchers at home and abroad have extended the design concept of high-entropy alloys to the field of high-entropy ceramic materials, and developed a series of high-entropy carbides, high-entropy nitrides, high-entropy borides, high-entropy sulfides and high-entropy Silicide and other new ceramic materials. In 2015, a new material called high-entropy oxides (HEOs) has extremely high stability due to the disordered distribution of atoms. Since its inception, because of its unique properties, Such as extremely high thermal stability, unique magnetic properties, efficient lithium ion storage performance,...

Claims

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