Results 81 to 90 of about 5,882 (208)

Influence of cobalt addition and calcination temperature on the physical properties of BaFe12O19 hexaferrites nanoparticles

Materials Research Express, 2020
Nano-scale particles of pure Barium hexaferrite ‘BaFe _12 O _19 ’ and Cobalt added Barium hexaferrite ‘Co _x BaFe _12 O _19 ’, with x = 0.04, 0.06 and 0.1 wt%, were successfully synthesized by the chemical co-precipitation method.
M Rekaby, H Shehabi, R Awad
doaj   +1 more source

A new hardness formula incorporating the effect of source density on indentation response: a discrete dislocation plasticity analysis [PDF]

, 2019
Planar discrete dislocation plasticity (DDP) calculations that simulate thin single crystal films bonded to a rigid substrate indented by a rigid wedge are performed for different values of film thickness and dislocation source density.
Balint, D, Dini, D, Xu, Y
core   +1 more source

Thermal and mechanical properties of Mg–Al–Si–O–N glasses with up to 6.2 at.% nitrogen

Journal of the American Ceramic Society, Volume 108, Issue 7, July 2025.
Abstract This study investigates the structural, thermal, and mechanical properties of Mg–Al–Si–O–N glasses. Six compositions with increasing nitrogen content from 1.7 to 6.2 at.% were synthesized by melting mixtures of high‐purity oxide and nitride precursors, followed by quenching and annealing.
Theany To, Chouaib Mhamdia, Sharafat Ali, Patrick Houizot, Karolina Milewska, Franck Tessier, Alain Moreac, Tanguy Rouxel   +7 more
wiley   +1 more source

Review of indentation size effect in crystalline materials: Progress, challenges and opportunities

Journal of Materials Research and Technology
Nanoindentation has been widely utilized for measuring mechanical properties at small scales over the past three decades. Indentation size effect (ISE) is a crucial phenomenon in nanoindentation testing of crystalline materials, which is usually ...
Ziyi Shen, Yutai Su, Zhiyuan Liang, Xu Long   +3 more
doaj   +1 more source

Updated consumer risk assessment of fluoride in food and drinking water including the contribution from other sources of oral exposure

EFSA Journal, Volume 23, Issue 7, July 2025.
Abstract This updated risk assessment evaluated evidence on potential adverse health effects of fluoride related to all sources of oral exposure as mandated by the European Commission. Fluoride benefit assessment was not included. Effects on the central nervous system, thyroid and bone were prioritised.
EFSA Scientific Committee, Susanne Hougaard Bennekou, Ana Allende, Angela Bearth, Josep Casacuberta, Laurence Castle, Tamara Coja, Amélie Crépet, Ron Hoogenboom, Helle Knutsen, Claude Lambré, Søren Saxmose Nielsen, Dominique Turck, Antonio Vicent Civera, Roberto Villa, Holger Zorn, Jacqueline Castenmiller, Karlien Cheyns, Keyvin Darney, Mary Gilbert, Jean‐Charles Leblanc, Haakon Meyer, Evangelia Ntzani, Martin Paparella, Marco Vinceti, Heather Wallace, Maria Anastassiadou, Maria Bastaki, Irene Cattaneo, Luna Greco, Anna Lanzoni, Francesca Riolo, Olaf Mosbach‐Schulz, Andrea Terron, Thorhallur Halldorsson   +34 more
wiley   +1 more source

Effective In Situ TOPCon Gettering of Epitaxially Grown Silicon Wafers during Bottom Solar Cell Fabrication

Solar RRL, Volume 9, Issue 8, April 2025.
We demonstrate that epitaxially grown silicon EpiWafers with a low carbon footprint are well suited for bottom solar cells in perovskite‐silicon tandem devices. Fabricating bottom solar cells with TOPCon layers incorporates an in situ gettering step from which the EpiWafers benefit in the same way as from a commercially used phosphorus pre‐gettering ...
Clara Rittmann, Pascal Messmer, Florian Schindler, Jana‐Isabelle Polzin, Armin Richter, Charlotte Weiss, Martin C. Schubert, Stefan Janz, Marion Drießen   +8 more
wiley   +1 more source

Bipolar HiPIMS kick‐pulse for high hardness in high‐entropy boride thin films

Journal of the American Ceramic Society, Volume 108, Issue 3, March 2025.
Abstract We report a microhardness indentation study for multicomponent refractory metal boride thin films that belong to the family of high‐entropy ceramics exhibiting superior hardness and high temperature properties. We focus on the nominally equimolar composition (Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)B2, which we refer to as HEB3, on c‐plane sapphire ...
Nathaniel S. McIlwaine, Nestor O. Marquez Rios, Eva Zurek, Donald W. Brenner, William G. Fahrenholtz, Stefano Curtarolo, Douglas E. Wolfe, Jon‐Paul Maria   +7 more
wiley   +1 more source

Indentation Size Effect on the Hardness of Silicon Carbide Ceramics [PDF]

Kemija u Industriji, 2010
The Vickers hardness of CVD SiC ceramics is determined as a function of the indentation load. Vickers hardness pyramid-shaped sharp diamond indenter with angle between opposite faces at an angle of 136° was used to apply five indentation loads of 4.91; 9.
.Grilec, K:, Rede, V., Ćurković, L.
doaj  

Growth, Structural and Micro hardness studies of KSbF4 and K2SbF5 crystals [PDF]

, 2015
Interest in Potassium Fluoro Antimonate crystals has been increased for the last four decades due its superionic conduction and its unusual electro-optic properties. Potassium tetra fluoro antimonate (KSbF4) and Potassium penta fluoro antimonite (K2SbF5)
Job, C. B. (C), Paulraj, S. (S), Shabu, R. (R)   +2 more
core  

Coastal fisheries adaptations to increasing climate change exposure in Japan

People and Nature, Volume 6, Issue 6, Page 2339-2356, December 2024.
Abstract Climate change‐driven ocean warming is altering the geographic ranges of species, leading to a poleward shift of tropical species into temperate regions (tropicalisation). This threatens the native marine community assemblages by changing the availability of traditional marine resources, thus impacting the livelihood and well‐being of coastal ...
Xochitl Édua Elías Ilosvay, Naoki H. Kumagai, Jorge García Molinos, Elena Ojea   +3 more
wiley   +1 more source