Russian scientists have found a way to make titanium parts significantly more resistant to wear. At VolgGTU, a titanium base was combined with a copper-nickel alloy using explosive welding, and then the resulting blank was treated with a laser.
This combination allowed for a change in the structure of the surface layer. Under the influence of the laser, titanium, copper, and nickel mixed and formed new compounds, creating a homogeneous coating.
As a result of laser treatment, titanium, copper, and nickel mixed and formed new compounds. The coating structure became homogeneous, which improved its strength and wear resistance.
Tests showed a significant difference compared to ordinary titanium. At room temperature, the wear resistance of parts with the new coating was 2.5 times higher, and when heated to 600 °C, it was 1.5 times higher.
At the same time, the coating maintained strong adhesion to the titanium base: researchers found no delamination or cracking.
The problem is especially important for parts operating in friction units. Titanium is strong and corrosion-resistant, but its surfaces are prone to seizing with other materials. This causes galling and accelerated wear.
Scientists plan to adapt the technology for complex alloyed titanium alloys. This could expand the use of such materials in aircraft construction, energy, and other industries.
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