Cold spray for aerospace, defense and energy applications
Additive manufacturing has gained great momentum. Alongside established processes like powder bed fusion, cold gas spraying, also simply known as cold spray, is becoming increasingly important. This approach is opening up new opportunities where conventional technologies are reaching their limits: for large-sized components, complex material combinations or refractory materials. The manufacturing process and the quality of the powders are the crucial factors for success – and this forms the basis for the collaboration between Impact Innovations and TANIOBIS.
Text by TANIOBIS GmbH melting procedure, no structural changes take place and no thermallycontingent tensions, which can cause cracks, occur. Secondly, it is possible to manufacture robust components that also include high deposition rates and low porosity. Cold spray also allows a combination of very different materials. Gradient layers or multi-material components are just as feasible as the specific coating of individual areas. Scalability up to large-sized structures makes the process particularly interesting for sectors where classic powder bed processes are reaching their limits, for instance, with rocket or jet engine components.
Manufacturing without melting or oxidation In the cold spray process, a carrier gas accelerates metal particles at supersonic speed and projects them on to a surface in a solid state. The kinetic energy ensures the metallurgical bonding without the need to melt the material in advance. This simple principle is making a huge impact. Firstly, typical disadvantages found in melting-based processes do not apply: No oxides are formed in the
When materials and processes harmonize Powders must have precisely defined properties to enable cold spray to exploit its full potential. The process can powerfully demonstrate its benefits, particularly with metals
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