Characterization of cold sprayed copper and copper alloys and simulation of coating profile, deposition yield and defect formation in cold spray deposition

Metal/diamond binary composite coatings on Al substrate without grit blasting were deposited by cold spray process with in-situ powder preheating. Microstructural characterization of the as-sprayed coatings with different diamond size, strength and with/without Ti coating on diamond was carried out by OM and SEM. The assessment of basic properties such as tensile bond strength and hardness of the coatings, and the deposition efficiency was also carried out. Particular attention on the composite coatings was on the diamond fracture phenomenon during the cold spray deposition and the interface bonding between the diamond and the Fe-based metal matrix.

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Characterization of Cold-Spray Coatings on Fiber-Reinforced Polymers through Nanoindentation Tests

Metals ◽

10.3390/met11020331 ◽

2021 ◽

Vol 11 (2) ◽

pp. 331

Author(s):

Alessia Serena Perna ◽

Antonello Astarita ◽

Pierpaolo Carlone ◽

Xavier Guthmann ◽

Antonio Viscusi

Keyword(s):

Cold Spray ◽

Polymer Matrix Composites ◽

Early Stage ◽

Spray Deposition ◽

Glass Fibers ◽

Fiber Reinforced Polymers ◽

Matrix Composites ◽

Reinforced Polymers ◽

Spray Coatings

Polymer matrix composites are finding never-ending widespread uses in the last decades; one recent tendency is to metallize their surface to further widen their field of application. Cold-spray deposition is one of the most promising techniques that can be adopted to this aim. Cold-spray deposition on polymers is in its early stage and more experimental work is required to fully understand the phenomena ruling the deposition. In this paper, the results of nanoindentation measurements on cold-spray coatings on various substrates will be presented and discussed. Polypropylene was used as matrix while carbon and glass fibers have been used as reinforcement, both steel and aluminum have been used as feedstock material for the cold-spray deposition. Nanoindentations tests have been then carried out on all the different samples; the influence of the fibers and of the powders sprayed on the behavior of the coatings is discussed in light of the experimental outcomes.

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Synthesis of carbon nanotube reinforced Al matrix composite coatings via cold spray deposition

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2020.126676 ◽

2021 ◽

Vol 405 ◽

pp. 126676

Author(s):

Xinliang Xie ◽

Zhanqiu Tan ◽

Chaoyue Chen ◽

Yingchun Xie ◽

Hongjian Wu ◽

...

Keyword(s):

Carbon Nanotube ◽

Cold Spray ◽

Matrix Composite ◽

Spray Deposition ◽

Composite Coatings ◽

Al Matrix Composite ◽

Al Matrix

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Large-area and low-cost Cu–Cu bonding with cold spray deposition, oxidation, and reduction processes under low-temperature conditions

Journal of Materials Science Materials in Electronics ◽

10.1007/s10854-021-06556-4 ◽

2021 ◽

Author(s):

Juncai Hou ◽

Qiumei Zhang ◽

Siliang He ◽

Jingru Bian ◽

Jinting Jiu ◽

...

Keyword(s):

Low Temperature ◽

Cold Spray ◽

Spray Deposition ◽

Low Cost ◽

Large Area ◽

Reduction Processes ◽

Temperature Conditions ◽

Cu Bonding

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Investigation of the Splat Deposition Behavior onto a Composite Coating in Cold Spray

Materials Science Forum ◽

10.4028/www.scientific.net/msf.941.1639 ◽

2018 ◽

Vol 941 ◽

pp. 1639-1644

Author(s):

Xin Chu ◽

Phuong Vo ◽

Stephen Yue

Keyword(s):

Electron Microscope ◽

Composite Coating ◽

Cold Spray ◽

Spray Deposition ◽

Cold Spraying ◽

Single Component ◽

Optical Profilometry ◽

Deposition Behavior ◽

Polished Substrate ◽

Scanning Electron

The splat test is usually generated by low feed rate cold spraying of particles onto an as-polished substrate and it can be considered as a monolayer coating deposition. In this study, in order to investigate cold spray deposition mechanisms, Fe splats were sprayed onto the cold-sprayed single component 316L, Fe, and a composite 90Fe coatings. Results showed that although there is only 3.6 vol.% of 316L in the composite 90Fe coating, Fe splats exhibit a much better deposition behavior onto the 90Fe as compared with the single component Fe coating. To explain this observation, Fe splat samples were characterized using the scanning electron microscope (SEM), optical profilometry, splat adhesion tests, and splat nanoindentation. Finally, a preliminary explanation towards the Fe splat deposition behavior onto the composite coating was drawn.

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