Ph. Djemia
University of Paris
61 Papers
246 Citations
Ph. Djemia is an academic researcher from University of Paris. The author has contributed to research in topics: Brillouin zone & Light scattering. The author has an hindex of 19, co-authored 50 publications. Previous affiliations of Ph. Djemia include Institut Galilée & Centre national de la recherche scientifique.
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Papers
Elastic and plastic properties of as-cast equimolar TiHfZrTaNb high-entropy alloy
Guy Dirras,Lola Lilensten,Ph. Djemia,Mathilde Laurent-Brocq,David Tingaud,Jean-Philippe Couzinié,Loïc Perrière,Thierry Chauveau,Ivan Guillot +8 more
TL;DR: In this article, the elastic properties of as-cast TiHfZrTaNb high entropy alloy were investigated by ultrasound measurements, yielding G=C44=28 GPa and C11=172 GPa effective isotropic elastic constants, allowing computation of the Young's modulus E, the bulk modulus B and Poisson ratio ν of about 78.5 GPa, 134.6GPa and 0.402.
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Structure, phase stability and elastic properties in the Ti1–xZrxN thin-film system: Experimental and computational studies
TL;DR: In this paper, the composition dependence of the structure and elastic properties of ternary Ti 1 − x Zr x N alloys is systematically investigated by combining thin film growth and ab initio calculations.
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Nondestructive evaluation of micrometric diamond films with an interferometric picosecond ultrasonics technique
TL;DR: In this paper, a series of diamond thin films of variable quality obtained by plasma-assisted chemical vapor deposition lying on titanium alloy substrates has been studied by femtosecond ultrasonics.
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Electronic structure and mechanical properties of ternary ZrTaN alloys studied by ab initio calculations and thin-film growth experiments
Gregory Abadias,Mohammed Benali Kanoun,Souraya Goumri-Said,L. E. Koutsokeras,L. E. Koutsokeras,Sergey Dub,Ph. Djemia +6 more
TL;DR: In this paper, the structure, phase stability, and mechanical properties of ternary alloys of the Zr-Ta-N system were investigated by combining thin-film growth and ab initio calculations.
53
Alloying effects on the structure and elastic properties of hard coatings based on ternary transition metal (M = Ti, Zr or Ta) nitrides
TL;DR: In this paper, the elastic properties of a series of ternary transition metal nitride coatings were elaborated by reactive magnetron co-sputtering, and the structural (texture and microstructure) and growth morphology evolution as a function of film thickness and chemical composition were investigated.
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