Precooling rate and reduction temperature effect on the characteristics of molybdenum powder by a novel freeze-drying method
Abstract
morphology, a slow rate yielded more uniform, finer Mo powder by stabilizing the ion distribution in the precursor solution, preventing solute segregation and asynchronous precipitation. A fast rate produced a smaller precursor powder but promoted particle growth during roasting. Hydrogen reduction followed a chemical vapor transport (CVT) mechanism. Adding polyvinyl pyrrolidone (PVP) enhanced AMP dispersibility in solution, which decomposed to create voids, improved overall powder dispersion, and significantly refined the Mo grains. The method produced nano-Mo powder with a favorable morphology and uniform, controllable quality.
Fields of Study & Subjects
Magnesium Oxide Properties and Applications
Advanced ceramic materials synthesis
Aerogels and thermal insulation
Publication details
- Journal / source
- Nanoscale
- Publisher
- Royal Society of Chemistry (RSC)
- Volume
- 18
- Issue
- 6
- Pages
- 3032–3045
- Publication date
- 1 January 2026
- Language
- EN