First Cold Spraying of Carbonated Biomimetic Nanocrystalline Apatite on Ti6Al4V: Physical–Chemical, Microstructural, and Preliminary Mechanical Characterizations

Kergourlay, Emmanuelle; Grossin, David; Cinca, N.; Josse, Claudie; Dosta, S.; Bertrand, Ghislaine; Garcia, Irene Teresinha Santos; Guilemany, J.M.; Rey, Christian

doi:10.1002/adem.201500409

Cited by 14 publications

(8 citation statements)

References 53 publications

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“…Some attempts have been performed with ceramic powders on soft substrates such as PEEK and magnesium . The first particles impact and embed into the soft substrates; further impinging particles collide on the previous deposited particles and help them to be deeper embedded, mostly resulting in thin layers with posterior coating build‐up being hardly likely to occur . On the other hand, it is thought on harder substrates that the optimal particle state for a successful substrate attachment is that in which the Hugoniot Elastic Limit (HEL) of the ceramic is reached …”

Section: Introductionmentioning

confidence: 99%

“…Those studies evaluated the deposition of porous sintered microcrystalline HA powders, showing mechanisms proceeding through pore collapse, fragmentation, and densification as well as grain refinement. However, the fragmentation of crystal grains which proceed by cracking and crushing, do not lead to the build‐up of a coating . On the other hand, the deposition mechanisms of agglomerated nanocrystalline HA powders has been understood by the compaction of nanocrystalline grains within the particle leading to successful build‐up of a coating up to 350 μm …”

Section: Introductionmentioning

confidence: 99%

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Feasibility of using low pressure cold gas spray for the spraying of thick ceramic hydroxyapatite coatings

Vilardell

Cinca

Dosta

et al. 2018

Int J Applied Ceramic Tech

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This article deals with the production of thick ceramic hydroxyapatite coatings obtained by Low Pressure Cold Gas Spray (LPCGS) system. Several factors such as powder microstructure, surface roughness and cold gas spray system are here discussed in the build‐up process. The use of nanocrystalline powder composed by fine agglomerates and needle‐like shape microstructure allows the realignment and compaction of individual crystallites to form thick deposits. In addition, the activation of the substrate surface results convenient for the first impinging particles anchored properly. Then, layer by layer, particles can remain attached leading to coating build‐up. Additionally, the use of low shock pressure as well as constant feeding system provided by LPCGS system lead to homogeneous coatings in comparison with High Pressure Cold Gas Spray (HPCGS) system. The successful coating build‐up has been achieved not only by the use of an agglomerated feedstock powder, but also by previous surface treatment and the use of the low pressure system. The obtaining of HA components by LPCGS is promising within biomedical field. An improvement of component strength is also suggested by means of thermomechanical analysis of the powder. The performance of a post heat‐treatment leads to an increase in HA strength, as well as crystal size.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Feasibility of using low pressure cold gas spray for the spraying of thick ceramic hydroxyapatite coatings

Vilardell

Cinca

Dosta

et al. 2018

Int J Applied Ceramic Tech

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“…For brittle ceramics, such "cold" deposition process is still questionable, but it was found that rather thick and adhesive coatings could be obtained with specific ceramic powders deposited on metallic, ceramic, or polymeric substrates: e.g., hydroxyapatite (HA) [5]- [7], TiO2 [8]- [10] Y203 [11] or SiC [12]. Dense ceramic powder is not relevant because the breaking of the particles leads to blocky fragments embedded like grit residues in a sand blasted surface.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Agglomerated Ceramic Powders Under Impact by Cold Spraying

Celeste¹,

Guipont²,

Missoum-Benziane³

et al. 2022

International Thermal Spray Conference

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Most of ductile metals can be deposited by cold spray (CS). For brittle ceramic, such solid-state deposition process is still questionable, but some recent work on Ti02 or hydroxyapatite powders have shown that micrometric ceramic powder could be deposited by CS. In this work, it is claimed that the nature and the porous architecture of a ceramic powder with agglomerated ultra-fine grains play an important role on the impact behaviour. The aim of this work is to investigate the deformation behaviour of ceramic agglomerated powders under high velocity impact. Two different powders, respectively 3YSZ and Y2O3, were selected in order to study their architectures (particle size, porosity, density, crystallite size, etc.). Cold spray “splats” experiments, with various spraying distances to vary the particles velocities upon impact, were carried out to observe the deformation and fragmentation. In case of Y2O3, cold spray with dynamic vacuum surrounding atmosphere up to 3kPa were also prepared to evaluate the role of the atmosphere on the resulting impact. In parallel, in situ SEM micro-compression tests at 10−2 s−1 on cross-sectioned 3YSZ particles involving flat-punch nano-indentation and micropillar compression were performed. By modelling the compression tests, the aim is to identify a Drücker-Prager behaviour law suitable for an agglomerated ceramic powder under quasi-static compression. Such deformation behaviour could help to better understand the compaction behaviour of agglomerated powders.

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“…Commonly, cold spray materials are metal materials with high plasticity, such as copper (Yin et al , 2013), aluminum (Huang et al , 2017, 2018a, 2018b), zinc (Chavan et al , 2013), nickel (Bae et al , 2012), titanium (Vidaller et al , 2015) and Fe-based alloys (Spencer and Zhang, 2011). Nowadays, cold spray technology has been widely used in the manufacture of anticorrosive coatings (Huang et al , 2017, 2018a, 2018b; Chavan et al , 2013), functional coatings/material (Hasniyati et al , 2016; Kergourlay et al ,2015; Dardona et al , 2016), additive manufacturing (Astarita et al , 2016).…”

Section: Introductionmentioning

confidence: 99%

Cold spray micro-defects and post-treatment technologies: a review

Wang

Han

Huang

et al. 2021

RPJ

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Purpose The deposition of particles onto a substrate during the cold spraying (CS) process relies on severe plastic deformation, so there are various micro-defects induced by insufficient deformation and severe crushing. To solve the problems, many post-treat techniques have been used to improving the quality by eliminating the micro-defects. This paper aims to help scholars and engineers in this field a better and systematic understand of CS technology by summarizing the post-treatment technologies that have been investigated recently years. Design/methodology/approach This review summarizes the types of micro-defects and introduces the effect of micro-defects on the properties of CS coating/additive manufactured, illustrates the post-treatment technologies and its effect on the microstructure and performances, and finally outlooks the future development trends of post-treatments for CS. Findings There are significant discoveries in post-treatment technology to change the performance of cold spray deposits. There are also many limitations for post-treatment methods, including improved performance and limitations of use. Thus, there is still a strong requirement for further improvement. Hybrid post-treatment may be a more ideal method, as it can eliminate more defects than a single method. The proposed ultrasonic impact treatment could be an alternative method, as it can densify and flatten the CS deposits. Originality/value It is the first time to reveal the influence factors on the performances of CS deposits from the perspective of microdefects, and proposed corresponding well targeted post-treatment methods, which is more instructive for improving the performances of CS deposits.

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First Cold Spraying of Carbonated Biomimetic Nanocrystalline Apatite on Ti6Al4V: Physical–Chemical, Microstructural, and Preliminary Mechanical Characterizations

Cited by 14 publications

References 53 publications

Feasibility of using low pressure cold gas spray for the spraying of thick ceramic hydroxyapatite coatings

Feasibility of using low pressure cold gas spray for the spraying of thick ceramic hydroxyapatite coatings

Assessment of Agglomerated Ceramic Powders Under Impact by Cold Spraying

Cold spray micro-defects and post-treatment technologies: a review

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