An exciting new project looking at commercialising laser-assisted cold-spray processing for high-quality deposition and repair, will demonstrate the applicability and cost-effectiveness of the technique for use in aerospace maintenance, repair and overhaul, for example, with its improved deposit qualities and higher performance deposits, and subsequent higher strength and hardness and increased corrosion resistance.
Known as COLA (Coaxially Laser-Assisted cold spray) this EU project brings together the expertise of Cavitar, TWI, LTU, TUT, Metalmark, TLS and Putzier.
As part of its work programme the team will optimise the new system and show how its benefits may be realised across a range of industry sectors and relevant applications, including where there is a need for corrosion-resistant Ti coatings, and ceramic-containing coatings for oxidation and wear resistance.
Project objectives are to:
- design and manufacture an omnidirectional, novel spray head;
- adopt the spray head with a ring array of compact diode lasers;
- engineer the diode lasers as user-switchable elements providing tailored beam �shapes for substrate heating;
- coaxially arrange the laser diodes around bespoke, process-optimised, interchangeable powder/gas delivery nozzles;
- incorporate on-line QA/process monitoring hardware, connected to copyright control software
- deliver several optimised parameter sets for laser-assisted cold spray of challenging material combinations or high performance processing.
The research leading to these results has received funding from the European Union Seventh Framework Programme [FP7/2007-2013] under grant agreement no 315157.
For further information please visit the COLA website