The Effect of TiH2 Particle Size on its Properties

Titanium-based composites have the potential to replace traditional materials in the automotive, aerospace and other industries. This is facilitated by their excellent mechanical, physical, thermal properties, and their strength-to-weight ratio. In the presented work, the influence of the particle size of hydrogenated titanium on its conductive properties was investigated. Hydrogen saturation was carried out using the Stevenson apparatus, the hydrogen content was 3.8%. After that, the initial sample was subjected to high-energy grinding. 3 main particle sizes were identified for further research: 100 μm, 100-200 μm, over 200 μm. Resistometric studies have shown that particles of 100-200 μm are characterized by an order of magnitude higher electrical conductivity than other particle sizes (8 (Ohm·cm)-1), which is due to the maximum contact between neighboring particles and their optimal geometry when packing the powder sample. Based on this powder size, a nanocomposite with carbon nanostructures was synthesized using mechanosynthesis, which is characterized by an order of magnitude higher electrical conductivity compared to the original components, which indicates the possibility of using such materials in the electrical engineering industry.