Residual stress in plasma spray and cold spray coatings

The plasma spray and cold spray technologies are well-developed deposition techniques for industrial activities such as aeronautical, automotive, energy fields, additive manufacturing. These two processes involve in residual stress generation connected to the deposition process and request always more control to improve coating quality and durability. The present study described the deposition of ceramics using atmospheric plasma spraying as well as alloys by cold spray with in-situ residual stress measurements. The use of an In-situ Coating Property sensor (ICP) from ReliaCoat Technologies, by the measurement of sample curvature during deposition, is used for the residual stress determination.