Flash Joule Heating Machine: Controlled synthesis of high-entropy alloys

Similarities in Technical Principles and Applications

High Temperature Thermal Shock and Material Synthesis: The team of Prof. Lei Fu and Associate Prof. Mengqi Zeng have explored various synthesis methods in the controlled synthesis of high entropy alloys, including rapid cooling techniques to form amorphous structures.The Flash Joule Heating Machine (FJH) technology is also capable of rapidly heating the material to high temperatures, triggering the reorganization of the material's internal structure and the formation of defects, and realizing precise modulation of the material's microstructure. The Flash Joule Heating Machine (FJH) also rapidly heats the material to high temperatures, triggering the reorganization of the internal structure and the formation of defects in the material to achieve precise control of the microstructure. Both take advantage of the intense reaction conditions brought about by high-temperature thermal shock to promote the efficient synthesis of target materials.

Rapid heating and property optimization: In the synthesis of high-entropy alloys, rapid heating and cooling help to form ideal alloy structures and properties, e.g., amorphous structures can be formed by avoiding crystallization through rapid cooling.FJH technology is also commonly used for rapid heating and property optimization in other material preparation, e.g., in the preparation of carbon-based materials, such as graphene, the defect density and electronic structure of the material can be modulated through rapid heating, thus optimizing its conductivity. structure of the material, thus optimizing its electrical conductivity and chemical activity.

Complementary technological advantages

High efficiency and low cost: The synthesis of high-entropy alloys usually requires high temperatures and rapid cooling, and the FJH technology is highly efficient as it can complete the heating and cooling of materials in a short time. This helps to improve the production efficiency, reduce the production cost, and provide technical support for the large-scale production of high-performance high-entropy alloys.

Environmental friendliness: FJH technology does not require the use of solvents or reaction gases during material synthesis and has low energy consumption, which meets the current requirements of environmental protection and sustainable development.

Directions for combining future research and applications

Further optimization of material properties: FJH technology can be applied to the subsequent treatment of high-entropy alloys to optimize the crystal structure and defect distribution of the alloys and improve their properties through further rapid heat treatment. For example, more uniform defect distribution and stronger metal-metal interactions can be achieved through FJH technology, enhancing the sintering resistance and long-term stability of the alloy.

Development of new alloys: Combine the rapid synthesis capability of FJH technology and the multi-element synergistic effect of high-entropy alloys to explore the development of new alloy materials. For example, try to put other types of metal or non-metal elements through the FJH technology for rapid heat treatment and structure optimization, and then use the synthesis method of high-entropy alloys for alloying, to achieve higher performance and more excellent application effects.

Optimization and standardization of process parameters: In-depth study of the synergistic mechanism between FJH technology and high-entropy alloy synthesis technology in the process of material preparation, and optimization of process parameters, such as heating temperature, heating time, and current density. Establish a standardized process flow to ensure the stability and consistency of the material properties, and provide a reliable technical guarantee for the commercial production and application of high-entropy alloys.

Electrospinning Nanofibers Article Source:

https://doi.org/10.1039/D4CS00034J