Quasicrystal-Polymer Composites for Additive Manufacturing Technology

Kenzari, Samuel; Bonina, David; Degiovanni, A.; Dubois, Jean‐Marie; Fournée, V.

doi:10.12693/aphyspola.126.449

Cited by 6 publications

(4 citation statements)

References 6 publications

(6 reference statements)

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“…As a result, the absorption of IR light is far higher in a quasicrystal in comparison to pure aluminium, its alloys, or other metals like steel, for which it comes close to R = 1, instead of R = 0.6 for a quasicrystal. A straightforward computation shows then that the elevation of temperature in a quasicrystal grain is around 30–40 K, which ensures good melting of the surrounding polymer [59]. The consequences are manifold: the resulting parts are leak tight, and therefore do not need any supplementary treatment for usage under pressure, the toughness of the material is improved, and as we show in this section, tribological performance and wear resistance are significantly higher in comparison to the state of the art results using conventional filling particles.…”

Section: Assessment Of the Practical Usefulness Of Cmas For Tribologimentioning

confidence: 99%

Friction and solid-solid adhesion on complex metallic alloys

Dubois

Belin-Ferré

2014

Science and Technology of Advanced Materials

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The discovery in 1987 of stable quasicrystals in the Al–Cu–Fe system was soon exploited to patent specific coatings that showed reduced friction in ambient air against hard antagonists. Henceforth, it was possible to develop a number of applications, potential or commercially exploited to date, that will be alluded to in this topical review. A deeper understanding of the characteristics of complex metallic alloys (CMAs) may explain why material made of metals like Al, Cu and Fe offers reduced friction; low solid–solid adhesion came later. It is linked to the surface energy being significantly lower on those materials, in which translational symmetry has become a weak property, that is determined by the depth of the pseudo-gap at the Fermi energy. As a result, friction is anisotropic in CMAs that builds up according to the translation symmetry along one direction, but is aperiodic along the other two directions. A review is given in this article of the most salient data found along these lines during the past two decades or so.

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Section: Assessment Of the Practical Usefulness Of Cmas For Tribologimentioning

confidence: 99%

Friction and solid-solid adhesion on complex metallic alloys

Dubois

Belin-Ferré

2014

Science and Technology of Advanced Materials

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“…The nonconvex equiaxed particles were made by additive manufacturing. An innovative material based on quasicrystal-polymer composites [40] was used to achieve a target density and to avoid open porosities that could lead to fluid absorption and consequently to particle density variation. The resulting bulk density of the composite material was ρ s = 1484 ± 17 kg/m 3 , measured by means of a pycnometer according to the protocol in [41].…”

Section: B Particles and Fluidsmentioning

confidence: 99%

Packing of sedimenting equiaxed dendrites

et al. 2018

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The packing of free-floating crystal grains during solidification has a strong impact on the phase-change process as well as on the structure and the defects in the solidified material. The packing fraction is affected by the particular dendritic morphology of the grains and by their low inertia resulting from the small density difference between solid and liquid. Understanding the grain packing phenomenon during metal alloy solidification is not experimentally possible since packing is coupled to many other phenomena. We therefore investigate the packing of equiaxed dendrites on a model system, consisting of fixed-shape nonconvex model particles sedimenting in conditions hydrodynamically similar to those encountered in solidifying metals. We perform numerical simulations by a discrete-element model and experiments with transparent liquids in a sedimentation column. The combination of experiments and simulations enables us to determine the packing fraction as a function of (i) the grain morphology, expressed by a shape parameter, and (ii) the hydrodynamic conditions, expressed by the particle Stokes number.

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“…The responses measured for this comparative study were porosity, hardness, wear resistance and friction coefficient. Generally, quasicrystalline polymer composites offered definite advantage which leads this type of material to have an effective participation in the automotive industry [45].…”

Section: Polymer Matrix Compositesmentioning

confidence: 99%

Design for additive manufacturing of composite materials and potential alloys: a review

Hegab

2016

Manufacturing Rev.

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-As a first step of applying additive manufacturing (AM) technology, plastic prototypes have been produced using various AM Process such as Fusion Deposition Modeling (FDM), Stereolithography (SLA) and other processes. After more research and development, AM has become capable of producing complex net shaped in materials which can be used in applicable parts. These materials include metals, ceramics, and composites. Polymers and metals are considered as commercially available materials for AM processes; however, ceramics and composites are still considered under research and development. In this study, a literature review on design for AM of composite materials and potential alloys is discussed. It is investigated that polymer matrix, ceramic matrix, metal matrix, and fiber reinforced are most common composites through AM. Furthermore, Functionally Graded Materials (FGM) is considered as an effective application of AM because AM offers the ability to control the composition and optimize the properties of the built part. An example of FGM through using AM technology is the missile nose cone which includes an ultra-high temperature ceramic graded to a refractory metal from outside to inside and it used for sustaining extreme external temperatures. During this work, different applications of AM on different classifications of composite materials are shown through studying of industrial objective, the importance of application, processing, results and future challenges.

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Quasicrystal-Polymer Composites for Additive Manufacturing Technology

Cited by 6 publications

References 6 publications

Friction and solid-solid adhesion on complex metallic alloys

Friction and solid-solid adhesion on complex metallic alloys

Packing of sedimenting equiaxed dendrites

Design for additive manufacturing of composite materials and potential alloys: a review

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