Results 21 to 30 of about 7,829 (169)

Sodium Niobate with a Large Interlayer Spacing: A Fast‐Charging, Long‐Life, and Low‐Temperature Friendly Lithium‐Storage Material

Advanced Science, Volume 10, Issue 20, July 18, 2023., 2023
NaNb13O33 micron‐sized particles are explored as a practical Li+‐storage anode material with comprehensively good electrochemical properties and broad temperature adaptability. This new niobate owns the largest interlayer spacing among the known shear ReO3‐type niobates.
Jiazhe Gao, Liting Yang, Cihui Huang, Guisheng Liang, Yi Lei, Songjie Li, Wenze Wang, Yinjun Ou, Shangfu Gao, Xuehua Liu, Yifeng Cheng, Jincang Zhang, Zhongzhu Liu, Aiming Guo, Robson Monteiro, Luanna Parreira, Rogerio Ribas, Chunfu Lin, Limin Wu, Renchao Che   +19 more
wiley   +1 more source

Metalurgia calcolítica en Carmona (Sevilla) [PDF]

SPAL. Revista de Prehistoria y Arqueología de la Universidad de Sevilla, 1998
This paper faces the scientific study of Chalcolithic minerals, slags and copper objects recovered few years ago, in two excavations, in the city of Carmona. The study of slags is of particular interest owed to the scarcity of this kind of pyrometallurgical material belonging toso early archaeological contexts.
Rovira, Salvador, Gómez Ramos, Pablo
openaire   +2 more sources

Metalurgia atacameña

Boletín Museo Nacional de Historia Natural, 1936
Por todo el Norte de Chile, desde el Choapa hasta Tacna y desde la costa del Pacifico hasta las provincias del noroeste argentino, se encuentran en las sepulturas de las últimas dos épocas preincaicas, numerosos objetos de metal, principalmente de cobre o de bronce, pero también de plata y más raramente de oro.
openaire   +1 more source

Capítulo XXXII. Metalurgia

, 2005
Le seul objet en métal recueilli à Tamtok est un petit GRELOT en « bronze » à l’arsenic. Ce grelot qui fut trouvé dans des déblais, avait sans doute été fondu sur place, à la cire perdue, car il contenait encore la partie interne de son moule, fait d’argile et de graphite.
Guy Stresser-Péan, Claude Stresser-Péan   +1 more
openaire   +1 more source

Influence of Heat Treatment Temperature on Crevice and Pitting Corrosion of UNS S32205 Duplex Stainless Steel

steel research international, EarlyView.
Heat treatments that alter the proportions of austenite and ferrite phases or induce the precipitation of phases such as sigma in duplex stainless steel UNS S32205 make it more susceptible to pitting and crevice corrosion. However, the effects of these treatments are not always evident when analyzed using the cyclic polarization technique.
Alba Regina Turin, Jomar José Knaip Ribeiro, Alex Pizzatto, Oriana Palma Calabokis, Yamid E. Nuñez de la Rosa, Pedro Victorio Caetano Abrantes Quadros, Claudio Moreira de Alcantara, Tiago Cousseau, Paulo César Borges   +8 more
wiley   +1 more source

Effect of MnO2–TiO2 and Nb2O5 on the Fabrication and Properties of Alumina Ceramics Produced via Vat Photopolymerization

Journal of the American Ceramic Society, Volume 109, Issue 5, May 2026.
ABSTRACT Additive manufacturing of ceramics allows the production of complex, small‐batch parts. Among available methods, digital light processing (DLP) offers high‐resolution results with excellent surface finish. LCD‐based DLP printers are cost‐effective due to simpler optics, though they require suspensions with high solid content (> 40 vol%) and ...
J. R. Verza, I. L. Camargo, A. P. Luz
wiley   +1 more source

Competitive Ni/Mn Reduction and Microstrain‐Coupled Negative Thermal Expansion in Delithiated Li‐Rich Cathodes

Angewandte Chemie International Edition, Volume 65, Issue 9, 23 February 2026.
In situ high‐temperature X‐ray diffraction (XRD) and absorption spectroscopy (XAS) reveal state dependent thermal evolution of Li1.2Ni0.2Mn0.6O2. Pristine electrodes transform from layered‐to‐spinel, while cycled electrodes convert directly to Li‐containing rock‐salt. The onset temperature drops with delithiation and partly recovers after relithiation.
Jilu Zhang, Qin Wang, Xinyue Zhai, Guanjie Yan, Bo Wang, Zhongzhu Liu, Jiayong Chen, Luanna Silveira Parreira, Ruochen Xu, Robson S. Monteiro, Sylvio Indris, Xiaoping Ouyang, Weibo Hua   +12 more
wiley   +1 more source

Influência da microgeometria do gume e da classe de PCBN no corte ortogonal de aço rápido fabricado por metalurgia do pó [PDF]

, 2013
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-graduação em Engenharia Mecânica, Florianópolis, 2013.Materiais fabricados pela metalurgia do pó utilizados em componentes automotivos, especificamente em ...
Souza, Dilson José Aguiar de
core  

Synergistic Effects of Entropy Tuning in Niobium‐Based Oxide Anode for Fast‐Charging Lithium‐Ion Batteries

Advanced Functional Materials, Volume 36, Issue 5, 15 January 2026.
An entropy‐tuned niobium‐based oxide (ETNO) anode for fast‐charging lithium‐ion batteries are presented, engineered via multi‐cation doping. The synergistic effects of entropy tuning result in excellent rate capability and long‐term durability under ultrafast charging conditions.
Yoojin Ahn, Xueyu Hu, Yong Ding, Chanho Kim, Yi‐Chen Wu, Taewoo Kim, Meilin Liu   +6 more
wiley   +1 more source

Metalurgia talayótica reciente: nuevas aportaciones

Trabajos de Prehistoria, 1991
El estudio de la tecnología metalúrgica en las Baleares señala influencias y talleres diferentes cuando se compara con las culturas mediterráneas contemporáneas como la Púnica, Etrusca o Nurágica. Se presentan nuevos análisis cuantitativos de yacimientos del Talayótico Tardío. La mayoría de esos análisis son aleaciones de base cobre (Cu-Sn y Cu-Sn-Pb),
Rovira Llorens, Salvador, Montero Ruiz, Ignacio, Consuegra Rodríguez, Susana   +2 more
openaire   +5 more sources