PhD opportunities

SUBJECT OF THESIS PROVIDED Additive manufacturing using cold spray

Thesis proposal

Area of expertiseMaterials science and engineering
Doctoral SchoolSMI - Sciences des Mtiers de l'Ingnieur
SupervisorM. Michel JEANDIN
Research unitCentre of materials
ContactJEANDIN Michel
http://www.mat.mines-paristech.fr/Accueil/Propositions-de-theses/
KeywordsCold spray, additive manufacturing
AbstractCold gas dynamic spraying, namely cold spray, is one of the most innovative thermal spray processes. Cold spray is an additive manufacturing process actually since it is based on external deposition of powdered material. Up to now, cold spray was mainly devoted to coating applications. However, cold spray is currently envisaged for direct manufacturing of actual shaped parts, which could therefore meet well-established laser-based additive manufacturing techniques, e.g. so-called LBD (Laser Beam Deposition). Compared to laser processing, cold spray can show advantages such as better efficiency and flexibility. Repairing using cold spray can be considered to be halfway between coating by cold spray and additive manufacturing due to less demanding geometrical requirements from deposition. In contrast, adhesion criteria are nearly the same for both repair and additive manufacturing. These criteria relate to particle-substrate bonding, knowing that the substrate can be made of particles. The major scientific objective of this thesis work rests on the understanding of phenomena involved at the interfaces which results from cold spray dynamic conditions. This should lead to specifications to meet the required adhesion strength. In parallel, cold spray build-up mechanisms will be studied to go into the governing parameters to make cold spray an additive manufacturing process for real part achievement.
ProfileTypical profile for a thesis at MINES ParisTech: Engineer and / or Master of Science - Good level of general and scientific culture. Good level of knowledge of French (B2 level in french is required) and English. (B2 level in english is required) Good analytical, synthesis, innovation and communication skills. Qualities of adaptability and creativity. Teaching skills. Motivation for research activity. Coherent professional project.
FundingConvention CIFRE