Results 1 to 10 of about 1,444,650 (267)

Use of cobalt ferrite and activated carbon in supercapacitors [PDF]

Processing and Application of Ceramics, 2023
Supercapacitors are energy storage devices that can cleanly and efficiently meet the growing energy demand. The presentwork describes the synthesis of nanoparticles of cobalt ferrite (CoFe2O4) by the combustion method and their use with activated carbon (
Isidorio Daysianne Kessy Mendes, Santos Érick A., Filho Arquimedes Lopes Nunes, da Silveira Pedro Henrique Poubel Mendonça, Eltom Amal Elzubair, de Biasi Ronaldo Sergio   +5 more
doaj   +1 more source

Fabrication of Al2O3-Nb2O5-LiF-ZrO2 FGMs by SPS method: Microstructural evaluation, dynamic and sintering behaviour [PDF]

Processing and Application of Ceramics, 2022
For the first time, alumina functionally graded materials (FGMs) with additions of niobium oxide, lithium fluoride and zirconia were produced by spark plasma sintering (SPS) and their sintering behaviour and dynamic properties were studied aiming to ...
de Jesus Paulo Roberto Rodrigues, da Silveira Pedro Henrique Poubel Mendonça, Ribeiro Matheus Pereira, da Silva Thuane Teixeira, Arantes Vera Lúcia, Gomes Alaelson Vieira   +5 more
doaj   +1 more source

Optimized Crystallographic Graph Generation for Material Science

Proceedings of the Thirty-Second International Joint Conference on Artificial Intelligence, 2023
Graph neural networks are widely used in machine learning applied to chemistry, and in particular for material science discovery. For crystalline materials, however, generating graph-based representation from geometrical information for neural networks is not a trivial task. The periodicity of crystalline needs efficient implementations to be processed
Astrid Klipfel, Yaël Frégier, Adlane Sayede, Zied Bouraoui   +3 more
openaire   +2 more sources

Solid Solution Strengthening of Mo, Re, Ta and W in Ni during High-Temperature Creep

Metals, 2021
Solid solution strengthening of the unordered γ matrix phase by alloying elements is of great importance during creep of Ni-based superalloys, particularly at high temperatures above 1000 °C.
Lukas Haußmann, Hamad ur Rehman, Dorothea Matschkal, Mathias Göken, Steffen Neumeier   +4 more
doaj   +1 more source

Cracking during High-Temperature Deformation of a High-Strength Polycrystalline CoNi-Base Superalloy

Metals, 2022
The crack susceptibility during processing has a crucial influence on the workability of wrought alloys. In particular, the processing of high-strength alloys that are prone to cracking is challenging and various process parameters have to be optimized ...
Daniel Hausmann, Lisa Patricia Freund, Cecilia Solís, Sven Giese, Mathias Göken, Ralph Gilles, Steffen Neumeier   +6 more
doaj   +1 more source

Anomalous Work Hardening Behavior of a Single Crystalline Co-Base Superalloy

Alloys, 2022
The defect evolution associated with an anomalous work hardening behavior of a single crystalline quaternary Co-Al-W-Ta superalloy at 950 °C was investigated by transmission electron microscopy.
Andreas Bezold, Nicklas Volz, Fei Xue, Mathias Göken, Steffen Neumeier   +4 more
doaj   +1 more source

Influence of Nb, Ta and Zr on the Interdiffusion Coefficients and Solid Solution Strengthening of γ-TiAl Single Phase Alloys

Metals, 2022
The alloying elements Nb, Ta and Zr improve the creep properties of fully lamellar γ/α2 titanium aluminides significantly. Since high temperature deformation mainly occurs in the γ-phase of γ/α2 titanium aluminides, the diffusivity and the solid solution
Lukas Haußmann, Steffen Neumeier, Johannes Bresler, Simon Keim, Florian Pyczak, Mathias Göken   +5 more
doaj   +1 more source

Promoting RAPID Vaccine Science Education at the Onset of the COVID-19 Pandemic

Journal of Microbiology & Biology Education, 2023
At the onset of the 2019 coronavirus disease (COVID-19) pandemic, it was clear that we needed to support public education on the science of vaccines. This project was born of that need and led to the development of comprehensive educational materials ...
Davida S. Smyth, Trace Jordan, Robert Seiser, Meghan Moran, Ulla Hasager, Sheryl Sorby, Nathan Kahl, Amy Shachter, Karen Oates   +8 more
doaj   +1 more source

In-situ observation of the initiation of plasticity by nucleation of prismatic dislocation loops

Nature Communications, 2020
Prismatic dislocation loops (PDLs) form during the elastic-to-plastic transition of a dislocation-free volume under nanoindentation. Here the authors observe the initial plasticity and burst-like emission of PDLs in Au nanowires by in-situ transmission ...
Subin Lee, Aviral Vaid, Jiseong Im, Bongsoo Kim, Arun Prakash, Julien Guénolé, Daniel Kiener, Erik Bitzek, Sang Ho Oh   +8 more
doaj   +1 more source

Development and Applications of 3D Printing-Processed Auxetic Structures for High-Velocity Impact Protection: A Review

Eng, 2023
Auxetic structures (AXSs) are a novel class of materials with unique mechanical deformation behavior associated with negative Poisson ratio. The combination of AXS configurations with various types of materials has unveiled a wide field of applications ...
Raí Felipe Pereira Junio, Pedro Henrique Poubel Mendonça da Silveira, Lucas de Mendonça Neuba, Sergio Neves Monteiro, Lucio Fabio Cassiano Nascimento   +4 more
doaj   +1 more source