Removal of waste layers
Removing of thin surface layer of a material, e.g., a used protective coating on a
gas-turbine blade is also a critical problem for the industry. This could also be solved using an
intense pulsed electron beam generated on the RITM machine. The figure below shows a surface relief of
a titanium alloy, half of which was shielded by a foil and another one was subjected to irradiation.
The shielded part has retained its original state with a roughness of
Ra=0.8 µm, while the irradiated part was first evaporated, and the thickness
of the evaporated layer H was measured to be 6.75 µm, then it was polished, with the irradiated surface
roughness decreasing down to 0.08 µm, i.e. by an order of magnitude.