Development of ultra-strong adhesive strength coatings using cold spray

In the cold spray process, adhesive strength between coatings and substrates is considered to be the most crucial mechanical property. Bonding is an important factor in determining if cold spray can be used for an application. Therefore, development of effective bonding between coatings with various...

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Bibliographic Details
Published in:Surface & coatings technology 2014-11, Vol.258, p.832-841
Main Authors: Huang, Renzhong, Ma, Wenhua, Fukanuma, Hirotaka
Format: Article
Language:English
Subjects:
Adhesive bonding
Adhesive strength
Aluminum base alloys
Applied sciences
Austenitic stainless steels
Coatings
Cold spray
Copper
Copper coating
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Fracture surface
Fractures
Heat resistant steels
Materials science
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Physics
Production techniques
Splat
Sprayers
Sprays
Stainless steels
Surface treatment
Surface treatments
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Summary:In the cold spray process, adhesive strength between coatings and substrates is considered to be the most crucial mechanical property. Bonding is an important factor in determining if cold spray can be used for an application. Therefore, development of effective bonding between coatings with various substrates is essential to cold spray processing. In this study, Cu coatings were deposited on to three different substrates: Al5052, Al6063, and stainless steel 316L. The adhesive strength of Cu coatings on these three substrates was investigated. The experimental results showed that effective bonding could be generated only when particle velocity exceeds 500m/s for Al alloy substrates, and 800m/s for stainless steel 316L substrates. Based on the present studies, an ultra-strong bonding (more than 200MPa) between dissimilar materials has been developed with cold spray processing. •Clarify the relationship between particle velocity and adhesive strength.•Develop a way to prepare an ultra-strong bonding between coatings and substrates.•Explain the effective bonding of copper coating with different substrates.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2014.07.074