Synthesis of Titanium-Based Composites by Pulsed Methods

Abstract:

Ti-based composites with advanced properties were fabricated by the explosion of the wires and magnetic-pulsed compaction methods. After the wire explosion the “metal core – oxide (or nitride) shell” structure is formed. Magnetic-pulsed treatment of such poorly conductive powder leads to the destruction of the shells and to the appearance of an electrical conductivity. This conductivity is only 4-7 times higher than that of pure titanium. As a result of the dynamic compaction of 100-150 nm powder the hot-pressed Ti+9TiO₂ composition appeared to have the best combination of mechanical properties: relative density – 95 %, microhardness - 4.2 GPa, reduced modulus of elasticity – 143 GPa, creep under constant load – 105 nm. The coefficients of thermal extension of three materials with different titanium oxide content: 6, 9 and 15 wt. % were measured. The nitride-containing composites were ~30% more porous and had low mechanical properties compared to Ti+TiO₂ compacts.

• Periodical: Nano Hybrids and Composites (Volume 34)
• Pages: 17-22
• DOI: https://doi.org/10.4028/p-r3v8k2
• Online since: February 2022
• Authors: Anton Sergeevich Kaygorodov*, Sergey Vladimirovich Zayats
• Keywords: Physical Properties, Pulsed Compaction, Structure, Wires Explosion

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