Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Daniel Rodrigo Leiva"'
Autor:
Verona Biancardi Oliveira, Cesar Augusto Gonçalves Beatrice, Ricardo Mendes Leal Neto, Wágner Batista Silva, Luiz Antonio Pessan, Walter José Botta, Daniel Rodrigo Leiva
Publikováno v:
Materials Research, Vol 24, Iss 6 (2021)
Abstract The (de)hydrogenation properties of a TiFe intermetallic compound (IMC) alloy activated by cold rolling inside a glovebox at ambient temperature were investigated by kinetic measurements, x-ray powder diffraction (XRD), and transmission elec
Externí odkaz:
https://doaj.org/article/fb5b2406901748bcb16e25ec4bafba80
Autor:
Braulio Salumão de Oliveira, Douglas Henrique Milanez, Daniel Rodrigo Leiva, Leandro Innocentini Lopes de Faria, Walter José Botta, Claudio Shyinti Kiminami
Publikováno v:
Materials Research, Vol 20, Iss suppl 1, Pp 89-95 (2017)
Thermal spraying processes allows high cooling rates and can favor the formation of amorphous microstructures. Amorphous metallic coatings can result in superior mechanical and functional properties. To follow new technological development and innova
Externí odkaz:
https://doaj.org/article/592d7d77c5354998921d695b6cc89c4c
Severe Plastic Deformation and Additive Distribution in Mg-Fe to Improve Hydrogen Storage Properties
Autor:
Flavio José Antiqueira, Daniel Rodrigo Leiva, Tomaz Toshimi Ishikawa, Alberto Moreira Jorge Junior, Walter José Botta
Publikováno v:
Materials Research, Vol 20, Iss suppl 1, Pp 61-70 (2017)
Magnesium (Mg) is a light metal with relatively low cost. Its hydride (MgH2) is interesting for the safe hydrogen storage in solid state and has a high gravimetric capacity of 7.6%. Practical application of Mg is still hampered by high reaction tempe
Externí odkaz:
https://doaj.org/article/d3fb7c35ef9046d2a20d6e9e5355d6b1
Publikováno v:
Energies, Vol 14, Iss 11, p 3068 (2021)
In this paper, we report an investigation of adding a non-hydride forming element in the multicomponent Ti-V-Nb-M system. By the Calculation of Phase Diagrams approach (CALPHAD), the thermodynamic phase stability of the TiVNbT (T = Cr, Mn, Fe, Co, an
Externí odkaz:
https://doaj.org/article/5dd0c61afe1e4d23b46acf8b0bcd3d3d
Autor:
José Erivaldo Bezerra de Freitas, Selma Elaine Mazzetto, Roniberto Morato do Amaral, Leandro Innocentini Lopes de Faria, Daniel Rodrigo Leiva, Douglas Henrique Milanez
Publikováno v:
Em Questão, Vol 23, Iss 3, Pp 228-249 (2017)
A Biotecnologia consolida-se como um tema recorrentemente tratado como estratégico para o desenvolvimento do Brasil. Neste contexto, há necessidade de se investigar o impacto das políticas públicas de ciência e tecnologia, como os Planos Plurian
Externí odkaz:
https://doaj.org/article/851cd270e3194a5d9cf27ffea854d2b3
Autor:
Roniberto Morato do Amaral, Luc Quoniam, Leandro Innocentini Lopes de Faria, Daniel Rodrigo Leiva, Douglas Henrique Milanez, Joyce Fioroni
Publikováno v:
Em Questão, Vol 23, Iss 1, Pp 228-253 (2017)
O objetivo geral deste estudo compreendeu a elaboração e análise de indicadores baseados em dados do Sistema Nacional de Pós-Graduação (SNPG), disponíveis através dos Cadernos de Indicadores da Capes. O método utilizado foi o estudo de caso
Externí odkaz:
https://doaj.org/article/7643b4201c5b41268baa77618c2f9fa2
Autor:
Ricardo Floriano, Daniel Rodrigo Leiva, João Guilherme Dessi, Alexandre Augusto Cesário Asselli, Alberto Moreira Jorge Junior, Walter José Botta
Publikováno v:
Materials Research, Vol 19, Iss suppl 1, Pp 80-85 (2016)
In this study, we have investigated the synthesis, microstructure and hydrogen storage properties of Mg-based nanocomposites containing different concentrations of TiCrV and TiCr1.2V0.8 alloys. The Mg-based nanocomposites of Mg containing Ti-Cr-V add
Externí odkaz:
https://doaj.org/article/155c784ca8464bcda4b0c14a2b1bc272
Autor:
Celise Villa dos Santos, Daniel Rodrigo Leiva, Fábio Rodrigues Costa, José Angelo Rodrigues Gregolin
Publikováno v:
Materials Research, Vol 19, Iss 2, Pp 339-352 (2016)
This study proposes a methodological guide to explore and select materials for executive aircraft interiors, contributing toward a perspective of materials requirements, indicators and strategies to design more environmentally sustainable products. T
Externí odkaz:
https://doaj.org/article/95c1937e76b04b5ea8594e65740351fd
Autor:
Ricardo Floriano, Daniel Rodrigo Leiva, Stefano Deledda, Bjørn Christian Hauback, Walter José Botta
Publikováno v:
Materials Research, Vol 16, Iss 1, Pp 158-163 (2013)
MgH2 was processed by short time high-energy ball milling (BM) and cold rolling (CR). A new alternative processing route (CR + BM) using the combination of CR followed by short time BM step was also applied. The effects on the final morphology, cryst
Externí odkaz:
https://doaj.org/article/ac0140b2c65b4c2995163c68b6c8fe52
Autor:
Daniel Rodrigo Leiva, Hevlin Cristina de Almeida Costa, Jacques Huot, Tiago Santos Pinheiro, Alberto Moreira Jorge Junior, Tomaz Toshimi Ishikawa, Walter José Botta Filho
Publikováno v:
Materials Research, Vol 15, Iss 5, Pp 813-817 (2012)
Severe plastic deformation routes (SPD) have been shown to be attractive for short time preparation of magnesium alloys for hydrogen storage, generating refined microstructures and interesting hydrogen storage properties when compared to the same mat
Externí odkaz:
https://doaj.org/article/6940ff3b69af4351959e6e8ba4496d73