Development of permanent magnet MnAlC/polymer composites and flexible filament for bonding and 3D-printing technologies

Palmero, Ester M.; Rial, J.; Vicente, Javier de; Camarero, Julio; Skårman, Björn; Vidarsson, Hilmar; Larsson, Per‐Olof; Bollero, A.

doi:10.1080/14686996.2018.1471321

Cited by 59 publications

(31 citation statements)

References 27 publications

(19 reference statements)

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“…Additive manufacturing (AM) is one of the fastest-growing nontraditional manufacturing technologies. Emerged in the 1980s and limited to prototyping, AM is now increasingly used in many industries such as medicine, aviation, or automotive industries [1][2][3]. All AM technologies allow the creation of 3D objects layer by layer and eliminate the waste generated during production almost completely.…”

Section: Introductionmentioning

confidence: 99%

Interlayer Adhesion Analysis of 3D-Printed Continuous Carbon Fibre-Reinforced Composites

Kuncius¹,

Rimašauskas²,

Rimašauskienė³

2021

Polymers

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Carbon fibre-reinforced materials are becoming more and more popular in various fields of industries because of their lightweight and perfect mechanical properties. Additive manufacturing technologies can be used for the production of complex parts from various materials including composites. Fused deposition modelling (FDM) is an excellent technology for the production of composite structures reinforced with short or continuous carbon fibre. In this study, modified FDM technology was used for the production of composites reinforced with continuous carbon fibre. The main aim of this study is to evaluate the shear strength of 3D-printed composite structures. The influence of printing layer height and line width on shear strength was analysed. Results showed that layer height has a significant influence on shear strength, while the influence of printing line width on shear strength is slightly smaller. Reduction of layer height from 0.4 mm to 0.3 mm allows increasing shear strength by about 40 percent. Moreover, the influence of the shear area and overlap length on shear force showed linear dependency, in which the shear area is increasing the shear force increasing proportionally. Finally, the results obtained can be used for the design and development of new 3D-printed composite structures.

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Section: Introductionmentioning

confidence: 99%

Interlayer Adhesion Analysis of 3D-Printed Continuous Carbon Fibre-Reinforced Composites

Kuncius¹,

Rimašauskas²,

Rimašauskienė³

2021

Polymers

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“…The abrupt increase of the rare earth elements price in 2011, along with the growing demand on permanent magnets, triggered the renewed interest in this material system in the past years [3,4]. This combination of circumstances has motivated many scientists to not only search for novel materials, but also to reinvestigate already know materialsystems like MnAl and work further on the development of new fabrication techniques, involving novel routes of powder metallurgy [5][6][7], hot deformation [8][9][10][11][12] and additive manufacturing [13][14][15][16] which can provide hard magnetic properties for these non-rare-earth relatively cheap permanent magnets [4].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and magnetic properties of Mn-Al-C permanent magnets produced by various techniques

et al. 2021

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Bulk Mn52Al46C2 in τ-phase was prepared by vacuum induction melting and used as precursor for the production bulk permanent magnets by suction casting and hot-extrusion. Part of the precursor alloy was mechanically milled into a τ-phase powder and used as precursor for production of samples by electron beam melting, hot-compaction and high pressure torsion processes. The microstructure and magnetic properties of all samples were investigated and correlated. It was found that the mechanical deformation enhances coercivity, up to 0.58 T, while the absence of this strain is beneficial for magnetization. Among the observed techniques, hot extrusion and high pressure torsion have shown promising possibilities to further develop Mn-Al-C as permanent magnets. However, it should be taken into account the challenges related to design a proper processing window for hot extrusion and the limitation of HPT regarding the absence of texture.

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“…Direct ink writing (DIW) and fused filament fabrication (FFF) have been used to fabricate fast responding actuators, inks containing high loads of magnetic fillers and 2D planar structures that exploit folding and unfolding processes . Additionally, 3D printed permanent magnets were developed …”

Section: Introductionmentioning

confidence: 99%

3D Printing of Magnetoresponsive Polymeric Materials with Tunable Mechanical and Magnetic Properties by Digital Light Processing

Lantean

Barrera

Pirri

et al. 2019

Adv Materials Technologies

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nanocomposites [12][13][14][15] -have been investigated for a broad variety of applications, from micro-and soft-robotics [10,[16][17][18] to biomedicine. [19][20][21][22][23][24] Among the different strategies, an accessible pathway to fabricate stimuli-responsive (4D) printed objects consists in magnetizing a soft-polymer by loading the polymeric matrix with magnetic fillers, such as particles of magnetite (Fe 3 O 4 ) or neodymium-iron-boron (NdFeB). [25][26][27][28][29][30][31] Direct ink writing (DIW) and fused filament fabrication (FFF) have been used to fabricate fast responding actuators, [32][33][34][35][36][37][38][39][40] inks containing high loads of magnetic fillers [41] and 2D planar structures that exploit folding and unfolding processes. [42] Additionally, 3D printed permanent magnets were developed. [43][44][45][46][47][48] However, both DIW and FFF present some drawbacks: first in terms of resolution; second in terms of the dispersion of the fillers, that may lead to nonhomogeneous magnetic response; and third in terms of temperature of processing, which could be not compatible with the fillers. [48,49] For the last one, the temperature can be decreased using some additives, however this approach may affect the mechanical performances of devices. [41] An alternative to DIW and FFF is digital light processing (DLP). This vat polymerization 3D printing technology involves the use of photosensitive (liquid) resins which are able to cure (i.e., to solidify) upon irradiation with a suitable light source. In DLP, a digital light projector (digital micromirror device) illuminates a photocurable resin with a 2D pixel pattern allowing the curing of single slices of the 3D object. [50][51][52] The aforementioned drawbacks associated to DIW and FFF can be overcome by the use of DLP. Indeed: (i) the printing resolution in DLP belongs to the pixel dimensions and it is generally higher than DIW and FFF, [53,54] (ii) in DLP the dispersion of the fillers is easier to control since liquid formulations are used; and (iii) the fabrication process generally occurs at room temperature. Nevertheless, two precautions must be taken into account: first, the increase of the content of nanoparticles may affect the photopolymerization process since they compete with the photoinitiator in absorbing the incident radiation; and second, the dispersion of the fillers must be stable for the whole printing procedure in order to print an object whose response is homogeneous to an external input. For the latter, macroscopic sedimentation, segregation, and spatial inhomogeneity must be avoided.Digital light processing is used for printing magnetoresponsive polymeric materials with tunable mechanical and magnetic properties. Mechanical properties are tailored, from stiff to soft, by combining urethane-acrylate resins with butyl acrylate as the reactive diluent. The magnetic response of the printed samples is tuned by changing the Fe 3 O 4 nanoparticle loading up to 6 wt%. Following this strategy, magnetoresponsive active components ar...

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Development of permanent magnet MnAlC/polymer composites and flexible filament for bonding and 3D-printing technologies

Cited by 59 publications

References 27 publications

Interlayer Adhesion Analysis of 3D-Printed Continuous Carbon Fibre-Reinforced Composites

Interlayer Adhesion Analysis of 3D-Printed Continuous Carbon Fibre-Reinforced Composites

Microstructure and magnetic properties of Mn-Al-C permanent magnets produced by various techniques

3D Printing of Magnetoresponsive Polymeric Materials with Tunable Mechanical and Magnetic Properties by Digital Light Processing

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