Effect of the Shape Factor on the Cold-Spraying Dynamic Characteristics of Sprayed Particles

Song, Jun; Liu, Juanfang; Chen, Qinghua; Li, Kepin

doi:10.1007/s11666-017-0616-8

Cited by 7 publications

(2 citation statements)

References 20 publications

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“…Reasonably selecting a narrow particle size range of amorphous alloy particles is conducive to improve the deposition efficiency of the amorphous alloy coatings. Song et al [72] investigated the influence of non-spherical particles on the impact velocity for different working parameters of the gas streams by using computational fluid dynamics modeling. The shape factor (φ) was used to quantify the degree of sphericity of the non-spherical particle [73].…”

Section: Powder Characteristicsmentioning

confidence: 99%

Current Research Status on Cold Sprayed Amorphous Alloy Coatings: A Review

et al. 2021

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Compared with traditional crystalline materials, amorphous alloys have excellent corrosion and wear resistance and high elastic modulus, due to their unique short-range ordered and long-range disordered atomic arrangement as well as absence of defects, such as grain boundaries and dislocations. Owing to the limitation of the bulk size of amorphous alloys as structural materials, the application as functional coatings can widely extend their use in various engineering fields. This review first briefly introduces the problems involved during high temperature preparation processes of amorphous coatings, including laser cladding and thermal spraying. Cold spray (CS) is characterized by a low-temperature solid-state deposition, and thus the oxidation and crystallization related with a high temperature environment can be avoided during the formation of coatings. Therefore, CS has unique advantages in the preparation of fully amorphous alloy coatings. The research status of Fe-, Al-, Ni-, and Zr-based amorphous alloy coatings and amorphous composite coatings are reviewed. The influence of CS process parameters, and powders and substrate conditions on the microstructure, hardness, as well as wear and corrosion resistance of amorphous coatings is analyzed. Meanwhile, the deposition mechanism of amorphous alloy coatings is discussed by simulation and experiment. Finally, the key issues involved in the preparation of amorphous alloy coatings via CS technology are summarized, and the future development is also being prospected.

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Section: Powder Characteristicsmentioning

confidence: 99%

Current Research Status on Cold Sprayed Amorphous Alloy Coatings: A Review

et al. 2021

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“…Song et al [43] built the computational fluid mechanics model to analysis the influence of shape factor on CS dynamic characteristics. The simulation results indicated that the speed of particles with smaller shape factor were more easily to reach the propellant gas velocity due to the relatively larger specific surface area.…”

Section: Particle Shapementioning

confidence: 99%

Review of cold spraying and its use for metallic glass coatings

Kang

Yue

et al. 2019

Materials Science and Technology

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Cold spraying (CS), a solid-state spraying technology, is expected to become an appropriate supplementary for traditional spraying methods owing to its plenty of merits such as high deposition efficiency, low temperature and little influence on the particles/substrate. The most reported researches are bulk alloys fabricated by CS. However, the systematic introduction and cold-sprayed metallic glass coatings have not been summarised. Therefore, in this paper, the international research status of CS including equipment structure, spraying process and parameters, advantages and disadvantages, deposit features and bonding mechanism were introduced. By using this technology, the successful researches about Fe-, Al-, Ni-, Cu- and Zr- based amorphous alloy coatings are reported. To overcome the limitations, further development and solutions were proposed.

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Microstructure, Mechanical Properties and Dry Sliding Wear Behavior of Cu-Al2O3-Graphite Solid-Lubricating Coatings Deposited by Low-Pressure Cold Spraying

Chen

Cheng

et al. 2018

J Therm Spray Tech

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Effect of the Shape Factor on the Cold-Spraying Dynamic Characteristics of Sprayed Particles

Cited by 7 publications

References 20 publications

Current Research Status on Cold Sprayed Amorphous Alloy Coatings: A Review

Current Research Status on Cold Sprayed Amorphous Alloy Coatings: A Review

Review of cold spraying and its use for metallic glass coatings

Microstructure, Mechanical Properties and Dry Sliding Wear Behavior of Cu-Al2O3-Graphite Solid-Lubricating Coatings Deposited by Low-Pressure Cold Spraying

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