Research progress in preparation of metal powders by pressurized hydrogen reduction
2021
Abstract Pressure hydrogen reduction (Pre-H2) is an important technology in hydrometallurgy, which is widely applied in the production of metal powders, coated composite powders, and metal oxides. In the 5G era, Pre-H2 is concerned in the electronic material manufacturing because of its clean, efficient, stable, and other characteristics. In this paper, the thermodynamic and kinetic principles of Pre-H2 in a liquid-phase environment are described, and the process methods, powder conditions, process parameters, and related applications of various products are summarized. In addition, this paper investigates the effect of liquid additives on powder morphology, reaction rate, quality of the process, and provides feasibility guidance for improving the process technology.
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