Results 1 to 10 of about 11,549 (140)

Mechanochemical Transformation From Zigzag-Type Layered/Phenakite to Disordered Rocksalt in Mn-Rich Cathodes for Li-Ion Batteries. [PDF]

Small
Mechanochemical activation drives the transformation of a Mo/F‐modified layered/phenakite precursor into a Mn‐rich disordered rocksalt phase. The resulting disordered rocksalt structure improves cation mobility and structural reversibility during cycling, enabling higher reversible capacity and enhanced electrochemical performance.
Wu YC, Ahn Y, Chen TY, Hu X, Ding Y, Oh Y, Wang W, Liu M.   +7 more
europepmc   +2 more sources

Dynamic recrystallization and microstructural evolution in 40CrNi2MoV steel during forging [PDF]

iScience
Summary: Reactor pressure vessel (RPV) studs require uniform microstructures for reliability. A strain-compensated Arrhenius constitutive model and dynamic recrystallization (DRX) model for 40CrNi2MoV steel were established via isothermal compression ...
Wei Zhu, Xiaohe Wang, Luoxing Li, Peng Cheng, Chenxi Shao, Decheng Wang, Feng Feng, Peng Zhou   +7 more
doaj   +2 more sources

Nuclear and non-nuclear analytical techniques applied to pre-colonial archaeological ceramics from the upper Madeira River/Brazil (940 to 760 B.P)

Brazilian Journal of Radiation Sciences, 2023
This article presents the results of applying three archaeometric techniques in archaeological ceramics from the upper river Madeira region in Amazonia.
Angislaine Freitas Costa, Denise Maria Cavalcante Gomes, Casimiro S Munita, Rogério Bária, Michelle Mayumi Tizuka, Renato Kipnis, Shigueo Watanabe, José Fernando Diniz Chubaci   +7 more
doaj   +1 more source

Distribución y consumo de cuentas de fluorita y translúcidas en la península ibérica del VI al II milenios ANE

Trabajos de Prehistoria, 2020
Los minerales translúcidos fueron apreciados por las sociedades prehistóricas por su rareza, y fueron utilizados como elementos altamente simbólicos.
José Ángel Garrido-Cordero, Carlos P. Odriozola, Ana C. Sousa, Victor S. Gonçalves, João Luís Cardoso   +4 more
doaj   +1 more source

Proceso de molturación mecánica en medio seco, húmedo y criogénico de polvo de hierro dúctil nanoestructurado

Revista de Metalurgia, 2011
El principal objetivo de este estudio, es obtener una efectiva reducción del tamaño de partícula y de grano de un polvo de hierro nanoestructurado mediante la molturación mecánica en diferentes medios de molienda.
N. Cinca, E. Hurtado, I. G. Cano, J. M. Guilemany   +3 more
doaj   +1 more source

Análisis de perfiles de difracción de una aleación Cu –2 % en peso Cr –6 % en peso Mo, aleada mecánicamente

Revista de Metalurgia, 2008
A través del análisis de perfiles de difracción de rayos X es posible obtener información válida de la estructura y propiedades de los materiales. Es una poderosa herramienta para caracterización de microestructuras de materiales nanoestructurados. En el
C. Aguilar, V. Martínez, S. Ordóñez, O. Pávez, L. Valderrama   +4 more
doaj   +1 more source

On the modified kinetics model describing the dynamic recrystallization behavior during hot deformation of Incoloy 925

Journal of Materials Research and Technology, 2023
The isothermally hot compression tests of Incoloy 925 were conducted over a temperature range of 900–1150 °C and strain rate of 0.01–10 s−1 to investigate the dynamic recrystallization (DRX) kinetics behavior and its effect on the microstructure ...
Yulong Zhu, Yu Cao, Fei Yuan, Junhao Ma, Qubo He, Rui Luo, Xuhong Jia, Quanyi Liu, Jun Xiao   +8 more
doaj   +1 more source

Variscita y ámbar en el Neolítico gallego. Análisis arqueométrico del collar del túmulo 1 de Chousa Nova, Silleda (Pontevedra, España)

Trabajos de Prehistoria, 2011
La excavación del túmulo 1 de Chousa Nova, Silleda (Pontevedra), proporcionó unos resultados sorprendentes. Aunque muy deteriorado, por diferentes factores, conservaba evidencias de una gran complejidad constructiva.
Salvador Domínguez-Bella, María José Bóveda   +1 more
doaj   +1 more source

ANÁLISE DE AGRUPAMENTOS ASSOCIADA A DIFRATOMETRIA DE RAIOS-X: UMA CLASSIFICAÇÃO MINERALÓGICA PRÁTICA DE BAUXITAS E SEUS PRODUTOS DE DIGESTÃO BAYER

Holos, 2017
Este trabalho teve como objetivo principal utilizar a ferramenta de análise de agrupamentos associada a difratometria de raios-X para classificar mineralogicamente horizontes bauxíticos e seus sólidos residuais da digestão Bayer.
Caio César Amorim Melo, Kelly Silva Oliveira, Rômulo Simões Angélica, Simone Patricia Aranha da Paz   +3 more
doaj   +1 more source

Characteristics of dynamic softening during high temperature deformation of CoCrFeMnNi high-entropy alloy and its correlation with the evolving microstructure and micro-texture

Journal of Materials Research and Technology, 2021
The characteristics of dynamic recrystallization (DRX) of a CoCrFeMnNi high–entropy alloy (HEA) was investigated via hot compression testing in the temperature range 950–1100 °C and at true strain rates of 10−2 and 10−1 s−1.
Sumit Ghosh, Madan Patnamsetty, Mahesh C. Somani, Pasi Peura   +3 more
doaj   +1 more source