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Article dans une revue

Development of calcium phosphate suspensions suitable for the stereolithography process

Chloé Goutagny, Stéphane Hocquet, Dominique Hautcoeur, Marie Lasgorceix, Nicolas Somers, Anne Leriche

With the median age of the population steadily rising, the rate of bone disorders increases as well, making the need of bone implants more and more urgent in our society. However, manufacturing of synthetic bioimplants requires high flexibility of the process and materials with sufficient…

Open Ceramics, 2021, 7, 11 p. ⟨10.1016/j.oceram.2021.100167⟩. ⟨hal-03889971⟩

Article dans une revue

Influence of a macroporous β-TCP structure on human mesenchymal stem cell proliferation and differentiation in vitro

Shaan Chamary, Liliana Grenho, Maria Helena Fernandes, Franck Bouchart, Fernando Jorge Monteiro, Jean-Christophe Hornez

This work aims at studying the links between a porous scaffold in β-TCP and its impact on cell differentiation and proliferation in vitro. β-TCP was synthesized by aqueous precipitation. The shaping methods were chosen for their ability to generate original structures with the potential to…

Open Ceramics, 2021, 7, 13 p. ⟨10.1016/j.oceram.2021.100141⟩. ⟨hal-04279666⟩

Article dans une revue

Influence of dopants on thermal stability and densification of β-tricalcium phosphate powders

Nicolas Somers, Florian Jean, Marie Lasgorceix, Hugo Curto, Giovanni Urruth, Anthony Thuault, Fabrice Petit, Anne Leriche

In this work, β-tricalcium phosphate (β-TCP) is doped with Mg2+ and Sr2+ in order to postpone the problematic β-TCP → α-TCP transition occurring from 1125 °C. Indeed, this phase transition occurs with a large lattice expansion during sintering causing microcracks and a reduced shrinkage leading to…

Open Ceramics, 2021, 7, pp.100168. ⟨10.1016/j.oceram.2021.100168⟩. ⟨hal-03796471⟩

Article dans une revue

Fabrication and characterization of PU/NKLNT/CFs based lead-free piezoelectric composite for energy harvesting application

Zakia Chelli, Hakim Hachour, Malika Saidi, Mourad Laghrouche, Ahcène Chaouchi, Mohamed Rguiti, Yannick Lorgouilloux, Christian Courtois

For vibration energy harvesting applications, a flexible composite material based on a polyurethane (PU) polymer matrix filled with polycrystalline particles (Na0.535K0.48)0.966 Li0.058 Nb0.9Ta0.1O3 (NKLNT) and crushed carbon fibers (CFs) has been developed by tape-casting method. NKLNT was…

Polymer-Plastics Technology and Materials, 2021, 60 (12), pp.1344-1356. ⟨10.1080/25740881.2021.1888995⟩. ⟨hal-03480434⟩

Article dans une revue

Effect of Bi substitution on nanostructural, morphologic, and electrical behavior of nanocrystalline La1-xBixNi0.5Ti0.5O3 (x = 0 and x = 0.2) for the electrical devices

S. Gharbi, R. Dhahri, M. Rasheed, E. Dhahri, R. Barille, Mohamed Rguiti, A. Tozri, Mohamed Berber

Bi-substituted Ti–Ni perovskite of different compositions La1-xBixNi0.5Ti0.5O3 were elaborated utilizing the sol–gel method. TGA thermogravimetric and DSC calorimetric analysis was used to obtain the optimal sample formation temperature. XRD Results showing that samples have crystallized in the…

Materials Science and Engineering: B, 2021, 270, pp.115191. ⟨10.1016/j.mseb.2021.115191⟩. ⟨hal-04280938⟩

Article dans une revue

The complete discretization of the dual mixed method for the heat diffusion equation in a polygonal domain

Luc Paquet, Réda Korikache

The purpose of this paper is to prove a priori error estimates for the completely discretized problem of the dual mixed method for the non-stationary heat diffusion equation in a polygonal domain of R2. Due to the geometric singularities of the domain, the exact solution is not regular in the…

Mathematics and Computers in Simulation, 2021, 186, pp.145-160. ⟨10.1016/j.matcom.2020.09.023⟩. ⟨hal-03722154⟩

Article dans une revue

Improvement of wear and corrosion protection of PEO on AA2024 via sol-gel sealing

Luciane Sopchenski, Julien Robert, Matthieu Touzin, Arnaud Tricoteaux, Marie-Georges Olivier

Plasma electrolytic oxidation (PEO) is a versatile and cost-effective technique to obtain protective oxide coatings in light metals, although its intrinsic porosity is a drawback for long-term corrosion resistance. Sol-gel layers are pointed as a useful tool to seal PEO porosity and increase its…

Surface and Coatings Technology, 2021, Surface and Coatings Technology, 417, 11 p. ⟨10.1016/j.surfcoat.2021.127195⟩. ⟨hal-03219885⟩

Article dans une revue

MULTIPLE BOUNDED VARIATION SOLUTIONS FOR A PRESCRIBED MEAN CURVATURE EQUATION WITH NEUMANN BOUNDARY CONDITIONS

Alberto Boscaggin, Francesca Colasuonno, Colette De Coster

We prove the existence of multiple positive BV-solutions of the Neumann problem - (u'/\sqrt{1+{u'}^2})' = a(x)f (u) in (0, 1), u (0) = u (1) = 0, where a(x) > 0 and f belongs to a class of nonlinear functions whose prototype example is given by f (u) = −λu + u^p, for λ &gt…

Journal of Differential Equations, 2021, 285, pp.607-639. ⟨10.1016/j.jde.2021.03.021⟩. ⟨hal-03721320⟩

Article dans une revue

Effect of spray drying treatment on the optical properties of Mg–Al spinel ceramics

Robin Stocky, Judith Boehmler, Sébastien Lemonnier, Pierre Gibot, Yannick Lorgouilloux, Anne Leriche

In recent years, Mg–Al spinel ceramic has been in the spotlight due to its large transparency range and goodmechanical properties. The aim here, was to control the state of agglomeration of powder to improve densifi-cation behaviour and consequently optical and mechanical properties of the ceramics…

Open Ceramics, 2021, 6, pp.100102. ⟨10.1016/j.oceram.2021.100102⟩. ⟨hal-03365216⟩

Article dans une revue

Guaranteed Quantity of Interest Error Estimate Based on Equilibrated Flux Reconstruction

Zuqi Tang, Suyang Lou, Abdelkader Benabou, Emmanuel Creusé, Serge Nicaise, Julien Korecki, Jean-Claude Mipo

The quality of a local physical quantity obtained by the numerical method, such as the finite element method (FEM), attracts more and more attention in computational electromagnetism. Inspired by the idea of goal-oriented error estimate given for the Laplace problem, this work is devoted to a…

IEEE Transactions on Magnetics, 2021, 57 (6), pp.7402104. ⟨10.1109/TMAG.2021.3071641⟩. ⟨hal-03195757⟩