The Cold Spray Materials Deposition Process: Fundamentals and Applications
Woodhead Publishing Ltd, September 2007, Pages: 376
The cold spray materials deposition process: Fundamentals and applications
- Examines the fundamentals of the cold spraying process
- Assesses how the technique can best be applied in practice
- Describes portable and stationary cold spray systems
The cold spray process produces dense, low oxide coatings which can be used in such diverse applications as corrosion control and metals repair. It has emerged as an important alternative to thermal spray coating techniques in certain areas. This pioneering book reviews both the fundamentals of the process and how it can best be applied in practice.
The first part of the book discusses the development of the process together with its advantages and disadvantages in comparison with thermal spray coating techniques. Part 2 reviews key process parameters such as powders, nozzle design, particle temperature and velocity, and particle/substrate interaction. It also describes portable and stationary cold spray systems. The final part of the book discusses how the cold spray process can be applied in such areas as improved wear, corrosion protection, electromagnetic interference shielding and repair of damaged components.
The cold spray materials deposition process will be a standard reference on this important process and its industrial applications.
Introduction
V K Champagne, US Army Research Laboratory, USA
PART 1 GENERAL ISSUES
The development of the cold spray process
A Papyrin, Cold Spray Technology (CST), USA
History of cold spray. Discovery of the cold spray phenomenon and its basic features. Initial studies on development of cold spray. Basic physical principles and key features. Evolution of cold spray technology and current status. Some comments on the patent situation. Symbol list. References.
Comparing cold spray with thermal spray coating technologies
M F Smith, Sandia National Laboratories, USA
Introduction. Traditional thermal spray technologies. Comparison of cold spray to traditional thermal spray. Conclusions. References.
The advantages and disadvantages of the cold spray coating process
J Karthikeyan, ABS Industries Inc, USA
Introduction. Advantages of the cold spray process. Disadvantages of the cold spray process. References.
The economics of the cold spray process
S Celotto, J Pattison, J S Ho, A N Johnson and W O’Neill, Innovative Manufacturing Research Centre, UK
Introduction. Cold spray equipment and infrastructure. Consumables. Comparison to other thermal spray techniques. Comparison to other additive fabrication techniques. Conclusions and future trends. Sources of further information and advice. References.
PART 2 COLD SPRAY PROCESS PARAMETERS
Cold spray process parameters: powders
F J Brodmann, F J Brodmann & Co, USA
Introduction. Selection criteria for cold spray feedstock. Key powder properties. Powder manufacturing process. New material developments. Discussion. Conclusions. Acknowledgements. References.
The influence of nozzle design in the cold spray process
K Sakaki, Shinshu University, Japan
Introduction. Numerical simulation of cold spray process. Nozzle design influences. References.
The role of particle temperature and velocity in cold spray coating formation
T Van Steenkiste, Delphi Systems, USA
Introduction. Particle velocity and temperature. The impact of particle velocity and temperature on coating formation. Altering particle temperature. Conclusions. Acknowledgements. References.
Particle/substrate interaction in the cold spray bonding process
M Grujicic, Clemson University, USA
Introduction. Transient non-linear dynamics analysis of the cold-gas particle/substrate interactions. Adiabatic shear instability and plastic-flow localization. The role of interfacial instability. Conclusions. References.
Supersonic jet/substrate interaction in the cold spray bonding process
V F Kosarev, S V Klinkov and A Papyrin, A Papyrin, Cold Spray Technology (CST), USA
Introduction. Investigation of supersonic air jet exhausting from a nozzle. Impact of a supersonic jet on a substrate. Heat transfer between a supersonic plane jet and a substrate under conditions of cold spray. Symbol list. References.
Portable, low pressure cold spray systems for industrial applications
R Maev, V Leshchynsky and E Strumban, University of Windsor, Canada
State-of-art cold spray systems. State-of-art powder feeding systems. Modification of the low pressure portable GDS system. Industrial low pressure portable GDS system. References.
Stationary cold spray systems for industrial applications
H Höll, Cold Spray Technology GmbH, Germany
Introduction. Industrial cold gas spray equipment: system layout, gas supply and control cabinet. Industrial cold spray equipment: gas heater, powder feeder and cold spray gas. References.
PART 3 APPLICATIONS OF COLD SPRAY COATINGS
Mechanical, thermal and electrical properties of cold sprayed coatings
A Gouldstone, W B Choi, W Chi, Y Wu and S Sampath, State University of New York at Stony Brook, USA
Introduction. Materials used for analysis. Mechanical property measurements. Microstructural characterization of coatings. Properties of coatings. Comparison of cold-spray coatings with traditional thermal spray of coatings. Conclusions. Acknowledgements. References.
Cold spray particle deposition for improved wear
D Wolfe and T Eden, Penn State University, USA
Introduction. Current state of the art. Cold spray wear resistant material properties. Cold spray wear resistant processing. Characterization. Powder characteristics. X-ray diffraction (XRD) and phase analysis. Scanning electron microscopy. Tribology. Adhesion and bond strength. Potential hybrid process combining cold spray can laser processing. Conclusions.
The use of cold spray coating for corrosion protection
R C McCune, formerly Ford Motor Company, USA
Introduction. Cold spraying of metals as a coatings technology for corrosion control. Galvanising of steel structures to prevent corrosion. Preventing aqueous and hot-surface corrosion. Conclusions. References.
Electromagnetic interference shielding by cold spray particle deposition
D J Helfritch, US Army Research Laboratory, USA
Introduction. Cold spray particle deposition. Parameter screening. Screening tests. Application. Conclusions. Acknowledgements. References.
Repair of magnesium components by cold spray techniques
V K Champagne, US Army Research Laboratory, USA
Introduction. Problems in using magnesium components. Limitations of current technologies. Key issues in using the cold spray process. Developing and testing cold spray coating of magnesium. Cold spray technology for coating magnesium. Predictive modelling process optimization. Cold spray trials. Coating characterization. Cost savings and implementation. Conclusions. References.
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