High‐Throughput Metal 3D Printing Pen Enabled by a Continuous Molten Droplet Transfer

Kim, Chan Kyu; Cho, Dae‐Won; Kim, Seok; Song, Sang Woo; Seo, Kang Myung; Cho, Young Tae

doi:10.1002/advs.202205085

Cited by 10 publications

(3 citation statements)

References 90 publications

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“…1 [16]. During the short-circuit metal transfer various forces affects the liquid metal droplet [17]. These forces are shown in Fig.…”

Section: Analysis Of the Main Physical Phenomena Affecting The Weld C...mentioning

confidence: 99%

Modelling the Weld Cladding Process to Predict Weld Clad Position and Shape Error

Votruba,

Fornůsek,

Havlan

et al. 2024

Preprint

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Wire Arc Additive Manufacturing (WAAM) is one of the most productive metal additive manufacturing methods. One of its most promising applications holds in manufacturing of difficult-to-cut materials where production costs can be reduced with minimizing the time of machining and total tool costs. To develop a correct WAAM technological process for manufacturing complex shaped components welding torch path corrections and welding power corrections have to be made especially in critical sections such as corners and sharp edges. A predictive mathematical model of the material cladding during WAAM process has been developed for the purposes of generating an optimal toolpath of the WAAM clads. This predictive mathematical model is simplified to reflect the important physical phenomena in the weld pool but also to optimize computing time. In this paper the principle of the mathematical model is described and its functionality is verified by the welding experiments with five different welding power settings. 3D scans of welded samples are used for the verification.

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“…1 [16]. During the short-circuit metal transfer various forces affects the liquid metal droplet [17]. These forces are shown in Fig.…”

Section: Analysis Of the Main Physical Phenomena Affecting The Weld C...mentioning

confidence: 99%

Modelling the Weld Cladding Process to Predict Weld Clad Position and Shape Error

Votruba,

Fornůsek,

Havlan

et al. 2024

Preprint

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show abstract

“…It is imperative to underscore that direct-writing and selective laser sintering technologies have emerged as predominant methodologies for the fabrication of gradient films with controlled component and performance attributes, leveraging the merits of hybrid nanoparticles and high-throughput manufacturing [21,22].…”

Section: Introductionmentioning

confidence: 99%

SiOC matrix nanocomposite films with self-gradient properties fabricated by laser sintering of hybrid nanoparticles

Chen,

Qiu,

Zhang

et al. 2024

Preprint

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The reinforced ceramics, known as ceramic matrix composites (CMCs), is playing an important role in modern advanced industrial applications. However, the fabrication of CMCs with both high toughness and high stiffness, which are normally considered mutually exclusive, is still challenging. Here, we develop a gradient property SiOC composite film reinforced with nanoscale tungsten-based particles using a novel avenue of the integration of hybrid nanoparticles inkjet printing and selective laser sintering. Mechanical results of SiOC-WOx films exhibit the stiffness-toughness co-enhancement, including a twofold improvement in hardness and modulus, and an over 3.8-fold better fracture toughness performance than its matrix. Moreover, owing to the metal-to-ceramic gradient properties, the films exhibit interfacial bonding strengths up to 86.6 MPa and operate stably even at 1050 ℃. Characterization results show that the excellent mechanical and interfacial performance is attributed to the significant gradient composition and uniformly dispersed self-assembled nanoscale reinforcing particles. The success of SiOC-WOx CMC films demonstrates the potential to accelerate the discovery of revolutionary nanocomposites using hybrid nanoparticles and bottom-up additive manufacturing processes.

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“…Upon the fabrication of a ceramic layer with gradient properties, it serves the dual purpose of a protective layer and a transition layer, effectively addressing the interfacial bonding issues arising from mismatches in the coefficient of thermal expansion (CTE) 20 . Hence, the development of gradient ceramic films with meticulously controlled compositions and properties, leveraging the high throughput capabilities of directly written hybrid nanoparticles, holds significant promise for advancement in reinforced ceramic film 21,22 .…”

mentioning

confidence: 99%

Nanoparticle-reinforced SiOC ceramic matrix composite films with structure gradient fabricated by inkjet printing and laser sintering

Chen,

Qiu,

Zhang

et al. 2024

Commun Mater

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Ceramic matrix composites (CMCs) play an important role in various load-bearing applications. However, fabricating CMCs with both high toughness and stiffness, which are normally mutually exclusive properties, is challenging. Here, we develop an SiOC composite film reinforced with nanoscale tungsten-based particles with a structure and property gradient by integrating hybrid nanoparticle inkjet printing and selective laser sintering. Mechanical results of the resulting SiOC-WOx films exhibit a stiffness-toughness co-enhancement, including a 2-fold improvement in hardness and modulus, and a 3.8-fold better fracture toughness than the matrix material. Moreover, the films exhibit interfacial bonding strengths of up to 86.6 MPa and operate stably at 1050 °C. This performance is attributed to a gradient in the metal-to-ceramic composition and uniformly dispersed self-assembled nanoscale reinforcing particles. This nanoparticle laser sintering method could be used to prepare other materials with structure and property gradients.

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High‐Throughput Metal 3D Printing Pen Enabled by a Continuous Molten Droplet Transfer

Cited by 10 publications

References 90 publications

Modelling the Weld Cladding Process to Predict Weld Clad Position and Shape Error

Modelling the Weld Cladding Process to Predict Weld Clad Position and Shape Error

SiOC matrix nanocomposite films with self-gradient properties fabricated by laser sintering of hybrid nanoparticles

Nanoparticle-reinforced SiOC ceramic matrix composite films with structure gradient fabricated by inkjet printing and laser sintering

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