Microstructure of Al–Mg-Sc-Zr alloy cold spray deposits after heat treatment and hot isostatic pressing

Хомутов, М. Г.; Chereshneva, A. A.; Petrovskiy, P.; Daubarayte, D. K.; Чеверикин, В. В.; Sova, A.; Travyanov, A. Ya.; Smurov, I.

doi:10.1016/j.jallcom.2020.157644

Cited by 15 publications

(9 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Non connected porosity (in grey), is homogenous and well distributed, and shows some locally connected cluster, although not percolating along the Z axis. This visualization supports that the measured porosity rate of the images is very close to the porosity threshold, and that it is likely that the percolation level is poorly estimated, leading to the differences shown on the permeability values in Figure (17).…”

Section: Comparison Between Experimental and Computed Permeabilitysupporting

confidence: 67%

See 1 more Smart Citation

Influence of Porosity on Ultra-High Vacuum Gas-Tightness in Cold-Sprayed Aluminum Coatings

et al. 2022

View full text Add to dashboard Cite

Vacuum chambers used in high-energy particle accelerator experiments are conventionally made of bulk beryllium, which shows significant drawbacks due to cost and toxicity. An alternative solution could be to develop chambers made of polymerbased composites. Since these materials exhibit high outgassing not compatible with an ultra-high vacuum environment, a suitable gas tight coating is required. Cold spray deposition of aluminum can be a solution, provided that the coating behaves as a perfect vacuum barrier. Porosity, especially percolating porous networks, is key to coating gas tightness issues. This work addresses the relationship between porosity and gas-tightness in cold spray coatings. To do so, coatings with different porosity were achieved playing with powder morphology, composition and process parameters. Their gas tightness was evaluated by helium leak tests. Classical microscopy, being essentially a 2D analysis, is strongly limited when dealing with 3D properties as porosity percolation. For this reason, 3D X-ray microtomography images of coatings were obtained and treated by image analysis methods: pores were compared in term of size and shape. Overall porosity properties, including percolation and a homogeneity criterion, were also investigated. Percolating porosity was highlighted for several samples which showed poor gas-tightness properties. The permeability of percolating pore structures was then numerically computed by a fast Fourier transform based method, to quantify the mass flow through the coating. Results of those computations were finally compared to experimental coating leak rate measurements, in an effort to elucidate the link between gas tightness and morphology of the pore space.

show abstract

Section: Comparison Between Experimental and Computed Permeabilitysupporting

confidence: 67%

“…Moreover, it has been used a feed-stock material since the early days of the cold spray process and can be considered today as a well known case. It has been sprayed in its pure form [10] [14] [5] [19], as classical alloys [12] [25] or exotic ones [17], as well as mixed with other powders [20].…”

Section: Introductionmentioning

confidence: 99%

Influence of Porosity on Ultra-High Vacuum Gas-Tightness in Cold-Sprayed Aluminum Coatings

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The particles no longer break along the dendrite network. The primary tensile region of the coating is the strength of joints between particles and the strength of the particles themselves [24].…”

Section: Resultsmentioning

confidence: 99%

Effect of heat treatment on the microstructure and mechanical properties of 7075 aluminum alloy cold-spray coatings

Zhang

Liu

Wang

2023

Mater. Res. Express

View full text Add to dashboard Cite

Cold Spray (CS) exhibit unique features due to the low temperatures involved. However, the CS coating are harder than the corresponding powders and bulk alloys, which results in a low toughness and then greatly limits the application of CS. To overcome this shortage, preheat treatment of powder and post-heat treatment of CS coating are applied to improve the performance of cold-sprayed 7075 aluminum alloy coatings in this work. With increasing temperatures of post-heat treatment, the tensile strength of the coatings increased from 228 MPa to 309 MPa with elongation of 2.46%. Microstructure analysis of the heat-treated coatings revealed that the improvement in mechanical properties was primarily due to an increase in the secondary phase. Accordingly, 7075 aluminum alloy powder was preheat treated at 200°C and then used for cold spraying, which resulted in improved mechanical properties in the resultant coatings exhibiting a tensile strength of 302 MPa and an elongation of 3.87%. These findings provide valuable insights into the practical application of cold-spraying technology in the aviation field.

show abstract

“…In latent heat deposit, energy is reciprocated when the material changes through metal matrix structures or metallic filters [ 136 ]. Phase change materials (PCMs) have three types, based on different combinations of materials, as follows: solid–solid, solid–liquid and liquid–gas.…”

Section: Electrical Energy Storage Classificationmentioning

confidence: 99%

Review on Comparison of Different Energy Storage Technologies Used in Micro-Energy Harvesting, WSNs, Low-Cost Microelectronic Devices: Challenges and Recommendations

Riaz

Sarker

Saad

et al. 2021

Sensors

132

View full text Add to dashboard Cite

This paper reviews energy storage systems, in general, and for specific applications in low-cost micro-energy harvesting (MEH) systems, low-cost microelectronic devices, and wireless sensor networks (WSNs). With the development of electronic gadgets, low-cost microelectronic devices and WSNs, the need for an efficient, light and reliable energy storage device is increased. The current energy storage systems (ESS) have the disadvantages of self-discharging, energy density, life cycles, and cost. The ambient energy resources are the best option as an energy source, but the main challenge in harvesting energy from ambient sources is the instability of the source of energy. Due to the explosion of lithium batteries in many cases, and the pros associated with them, the design of an efficient device, which is more reliable and efficient than conventional batteries, is important. This review paper focused on the issues of the reliability and performance of electrical ESS, and, especially, discussed the technical challenges and suggested solutions for ESS (batteries, supercapacitors, and for a hybrid combination of supercapacitors and batteries) in detail. Nowadays, the main market of batteries is WSNs, but in the last decade, the world’s attention has turned toward supercapacitors as a good alternative of batteries. The main advantages of supercapacitors are their light weight, volume, greater life cycle, turbo charging/discharging, high energy density and power density, low cost, easy maintenance, and no pollution. This study reviews supercapacitors as a better alternative of batteries in low-cost electronic devices, WSNs, and MEH systems.

show abstract

Microstructure of Al–Mg-Sc-Zr alloy cold spray deposits after heat treatment and hot isostatic pressing

Cited by 15 publications

References 42 publications

Influence of Porosity on Ultra-High Vacuum Gas-Tightness in Cold-Sprayed Aluminum Coatings

Influence of Porosity on Ultra-High Vacuum Gas-Tightness in Cold-Sprayed Aluminum Coatings

Effect of heat treatment on the microstructure and mechanical properties of 7075 aluminum alloy cold-spray coatings

Review on Comparison of Different Energy Storage Technologies Used in Micro-Energy Harvesting, WSNs, Low-Cost Microelectronic Devices: Challenges and Recommendations

Contact Info

Product

Resources

About