Net Shape Fins for Compact Heat Exchanger Produced by Cold Spray

Cormier, Yannick; Dupuis, Philippe; Jodoin, B.; Corbeil, Antoine

doi:10.1007/s11666-013-9968-x

Cited by 53 publications

(39 citation statements)

References 8 publications

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“…Over two decades of fundamental studies (Ref [11][12][13][14][15][16][17][18][19] have elucidated the theoretical principles of the process, which has led to the development of commercial equipment and applications . While the CGDS process has become established in recent years, particularly for repairs , it is still in its infancy as an AM process (Ref [28][29][30][31][32][33][34][35][36] (Ref 13) proposed that the critical velocity for titanium is above 700 m/s for adiabatic sheer instability to occur. This may limit the possibility of using this process as fabrication tool due to high cost of equipment and operation.…”

Section: Introductionmentioning

confidence: 99%

Cold Spraying of Armstrong Process Titanium Powder for Additive Manufacturing

et al. 2016

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Titanium parts are ideally suited for aerospace applications due to their unique combination of high specific strength and excellent corrosion resistance. However, titanium as bulk material is expensive and challenging/costly to machine. Production of complex titanium parts through additive manufacturing looks promising, but there are still many barriers to overcome before reaching mainstream commercialization. The cold gas dynamic spraying process offers the potential for additive manufacturing of large titanium parts due to its reduced reactive environment, its simplicity to operate, and the high deposition rates it offers. A few challenges are to be addressed before the additive manufacturing potential of titanium by cold gas dynamic spraying can be reached. In particular, it is known that titanium is easy to deposit by cold gas dynamic spraying, but the deposits produced are usually porous when nitrogen is used as the carrier gas. In this work, a method to manufacture low-porosity titanium components at high deposition efficiencies is revealed. The components are produced by combining low-pressure cold spray using nitrogen as the carrier gas with low-cost titanium powder produced using the Armstrong process. The microstructure and mechanical properties of additive manufactured titanium components are investigated.

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Section: Introductionmentioning

confidence: 99%

Cold Spraying of Armstrong Process Titanium Powder for Additive Manufacturing

et al. 2016

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“…A significant amount of work has been performed on WMHE as well as the production of pyramidal pin fins produced by additive manufacturing cold spray process [7][8][9], [23], [25], [60][61][62]. The thermal performance enhancement of heat exchanger surfaces by additive manufacturing of fins using the cold spray technique (as illustrated in Figure 2.17) is an innovative idea for which limited investigation work has been done.…”

Section: Figure 217 Wire Mesh Heat Exchanger With Fins Produced By Cmentioning

confidence: 99%

“…Cormier et al [9] investigated the process feasibility and manufacturability of aluminum and stainless steel pyramidal pin fin arrays using the cold spray method. The fins were …”

Section: Figure 218 Cold Spray Apparatus Set-up Using Wire Mesh Masksmentioning

confidence: 99%

“…In the past few years, at the University of Ottawa, a novel method for applying pyramidal pin fins on new WMHE using the cold spray method was developed, where pyramidal fins were fabricated and tested with different feedstock powders [9], but never aluminum-alumina powders. Using aluminum-alumina powder mixtures increases deposition efficiency and contributes to preventing nozzle clogging.…”

Section: Experimental Work Objectivesmentioning

confidence: 99%

“…This can be achieved by the addition of fins to the outer walls where the heat of the CHE's core will be conducted to the outer layers. These fins can be manufactured with the aid of cold spray [7][8][9]. For the various applications of CHEs, different types of feedstock powder materials can be deposited.…”

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confidence: 99%

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Influence of Alumina Addition to Aluminum Fins for Compact Heat Exchangers Produced by Cold Spray Additive Manufacturing

et al. 2015

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Aluminum and aluminum-alumina powder mixtures were used to produce pyramidal fin arrays on aluminum substrates using cold spray as an additive manufacturing process. Using aluminum-alumina mixtures instead of pure aluminum powder could be seen as a costeffective measure, preventing nozzle clogging. The fin geometries that were produced were observed using a 3D digital microscope to determine the flow passages width and fins geometric details. Heat transfer and pressure tests were carried out using different ranges of appropriate Reynolds numbers for the sought commercial application to compare each fin array and determine the effect of alumina content. It was found that the presence of alumina reduces the fins' performance when compared to pure aluminum but that they still outperform traditional fins. Numerical simulations were performed and were used to explain

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Supersonic Cold Spraying for Energy and Environmental Applications: One‐Step Scalable Coating Technology for Advanced Micro‐ and Nanotextured Materials

Joshi

Yarin

et al. 2019

Advanced Materials

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Supersonic cold spraying is an emerging technique for rapid deposition of films of materials including micron-size and submicron metal particles, nanoscale ceramic particles, clays, polymers, hybrid materials comprised of polymers and particulates, reduced graphene oxide (rGO), and metal-organic frameworks. In this method, particles are accelerated to a high velocity and then impact a substrate at near ambient temperature, where dissipation of their kinetic energy produces strong adhesion. This manuscript reviews the recent progress in fundamentals and applications of cold spraying. High velocity impact with the substrate results in significant deformation, which not only produces adhesion, but can change the particles' internal structure. Cold-sprayed coatings can also exhibit micro-and nanotextured morphologies not achievable by other means. Suspending micro-or nanoparticles in a liquid and cold-spraying the suspension produces fine atomization and even deposition of materials that could not otherwise be processed. The scalability and low-cost of this method and its This article is protected by copyright. All rights reserved. 3 compatibility with roll-to-roll processing make it promising for many applications, including ultra-thin flexible materials, solar cells, touch-screen panels, nanotextured surfaces for enhanced heat transfer, thermal and electrical insulation films, transparent conductive films, materials for energy storage (e.g. Li-ion battery electrodes), heaters, sensors, photoelectrodes for water splitting, water purification membranes, and self-cleaning films.

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Net Shape Fins for Compact Heat Exchanger Produced by Cold Spray

Cited by 53 publications

References 8 publications

Cold Spraying of Armstrong Process Titanium Powder for Additive Manufacturing

Cold Spraying of Armstrong Process Titanium Powder for Additive Manufacturing

Influence of Alumina Addition to Aluminum Fins for Compact Heat Exchangers Produced by Cold Spray Additive Manufacturing

Supersonic Cold Spraying for Energy and Environmental Applications: One‐Step Scalable Coating Technology for Advanced Micro‐ and Nanotextured Materials

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