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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Hydrogen storage properties of filings of the ZK60 alloy modified with 2.5 wt% mischmetal

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Autor(es):
Silva, E. P. [1] ; Leiva, D. R. [2] ; Floriano, R. [3] ; Oliveira, V. B. [4] ; Pinto, H. C. [5] ; Botta, W. J. [2]
Número total de Autores: 6
Afiliação do(s) autor(es):
[1] Fed Univ Vales Jequitinhonha & Mucuri UFVJM, Inst Engn Sci & Technol IECT, Januba, MG - Brazil
[2] Fed Univ Sao Carlos UFSCar, Dept Mat Engn, Sao Carlos, SP - Brazil
[3] Univ Estadual Campinas, UNICAMP, Sch Appl Sci, Limeira, SP - Brazil
[4] Univ Estado Rio De Janeiro, Polytech Inst, Dept Mat, Nova Friburgo, RJ - Brazil
[5] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Mat Engn, Sao Carlos, SP - Brazil
Número total de Afiliações: 5
Tipo de documento: Artigo Científico
Fonte: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; v. 45, n. 8, p. 5375-5383, FEB 14 2020.
Citações Web of Science: 0
Resumo

In this study, a commercial Mg-based ZK60 alloy was modified with 2.5 wt% mischmetal (ZK60-2.5 wt%Mm) and further processed by cold rolling followed by manual filing. The chips obtained by manual filing process were collected from the as cast (AC) and the cold rolled (CR) materials. The hydrogen storage properties were evaluated by kinetics measurements at 350 degrees C. A full microstructural characterization including optical, scanning and transmission electron microscopy (MO, MEV and TEM), X-ray diffraction (XRD) and differential scanning calorimetry (DSC) was performed in the samples. For the first absorption of both filed samples the H storage capacity showed a value around 6.0 wt% after 1 h while for the CR sample it was close to 1.25 wt% after the same time. The manual filing produced samples with higher hydrogenation kinetics compared with that of the CR sample. Besides, their hydrogen storage capacity was maintained close to the theoretical value (6.75 wt%). The breakage and pulverization of the intermetallic phases gave the chips from the CR alloy the faster hydrogenation kinetics, especially for H-desorption. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. (AU)

Processo FAPESP: 11/09324-8 - Junção por fricção e mistura mecânica em ligas tixofundidas de magnésio de alto desempenho
Beneficiário:Erenilton Pereira da Silva
Linha de fomento: Bolsas no Brasil - Doutorado Direto
Processo FAPESP: 16/13885-9 - Propriedades de armazenagem de hidrogênio de limalhas da liga ZK60 + 2,5% mm severamente deformada
Beneficiário:Erenilton Pereira da Silva
Linha de fomento: Bolsas no Brasil - Pós-Doutorado
Processo FAPESP: 13/05987-8 - Processamento e caracterização de ligas metálicas amorfas, metaestáveis e nano-estruturadas
Beneficiário:Claudio Shyinti Kiminami
Linha de fomento: Auxílio à Pesquisa - Temático