Quizzed article | REF: M1648 V1

Cold-gas dynamic-spray process (or cold spray)

Authors: Michel JEANDIN, Maurice DUCOS

Publication date: December 10, 2020, Review date: December 21, 2020 | Lire en français

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13. Glossary

deposition efficiency (DE)

Ratio between the mass of powder injected into the system and the mass of material deposited on the substrate part.

splat ; splat

Particle crushed by plastic deformation on impact.

vitesse critique; critical velocity

Particle velocity threshold below which the deposit cannot adhere to the substrate or build up.

buse de Laval; de Laval nozzle

Nozzle-shaped tube (convergent-divergent), used to accelerate hot gases, forming the base of the cold spray nozzle.

adiabatic shearing; adiabatic shearing

Mechanism of intense deformation of metals (particularly on impact by cold spray particles) associated with intense heat release over a short, localized...

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Ongoing reading
Glossary

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Acronyms and notations

Bibliography

(1) - SCHMIDT (T.), ASSADI (H.), GARTNER (F.) et al - From particle acceleration to impact bonding in cold spraying. - J. Thermal Spray Technol., vol. 18, p. 794-808 (2009).
(2) - YIN (S.), MEYER (M.), LIAO (H.) et al - Gas flow, particle acceleration and...

Standardization

Metallic materials – Rotary bar bending fatigue tests. - BS ISO 1143 :2010 - Décembre 2010
Essai d'adhérence par traction de revêtements projetés thermiquement. - ASTM C633-13 - 2017
Thermal spraying – Tensile adhesion testing. - NF EN ISO 14916 - Mai 2017
Particle size analysis – Laser diffraction methods. - ISO 13320 - Janvier 2020
Environmental management – Lifecycle analysis – Principles...

Regulations

ATEX Directive 201/34/EU on equipment and protective systems intended for use in potentially explosive atmospheres.

Patents

DANTIN (B.) et al. – Airbus Group SAS, Structure with electrically conductive lines on the surface and process for producing electrically conductive lines by cold spray, Patent WO 2016/107918 A1, 2016.

CHOHRA (M.) et al. – Dassault-Aviation, Composite part featuring a functional layer and a polymer binder, and associated cold spray manufacturing process. French patent # 3 006 914, 2013.

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