Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Ricardo Alexandre Galdino da Silva"'
Autor:
Vanessa de Cassia Gomes Videira, Bruna Naemi Harada, Vitor Gonçalves Vital, Ricardo Alexandre Galdino da Silva, Suzan Pantaroto de Vasconcellos, Diogo Silva Pellosi
Publikováno v:
Next Materials, Vol 3, Iss , Pp 100071- (2024)
Silver nanoparticles (AgNP) have been used as an alternative to microbial resistance. Nevertheless, AgNP high cost and moderate toxicity to humans limit their use. Copper nanoparticles (CuNP) emerge as an alternative, but their fast oxidation hampers
Externí odkaz:
https://doaj.org/article/36c14c8070ac478697895130fcdb87ed
Novel CuxFeMnNiSnTi high entropy alloys: Microstructure, surface chemistry, and corrosion resistance
Autor:
Leandro Santos da Silva, Tiago Luiz Ferreira, Mara Cristina Lopes de Oliveira, Renato Altobelli Antunes, Ricardo Alexandre Galdino da Silva
Publikováno v:
Journal of Materials Research and Technology, Vol 26, Iss , Pp 5409-5424 (2023)
CuxFeMnNiSnTi alloys were prepared by electric arc melting. The microstructure was examined by scanning electron microscopy and the crystalline phases were assessed by X-ray diffractometry. The composition of the surface oxide film was analyzed by X-
Externí odkaz:
https://doaj.org/article/2a00afcbf8f64012a2b61a5b9f484ff5
Autor:
Juliana Sarango de Souza, Mara Cristina Lopes de Oliveira, Renato Altobelli Antunes, Ricardo Alexandre Galdino da Silva
Publikováno v:
Journal of Materials Research and Technology, Vol 16, Iss , Pp 1213-1230 (2022)
The correlation between the surface chemistry and the corrosion behavior of quaternary CuAlMnGd and CuAlMnSn alloys was studied in 3.5 wt.% NaCl solution. The alloys were produced by arc furnace melting. Sn addition promoted the formation of a homoge
Externí odkaz:
https://doaj.org/article/15843db03ffb4f7cb0ed89c0f0163b9a
Publikováno v:
Eclética Química, Vol 33, Iss 1, Pp 63-70 (2018)
Ag precipitation reaction in the Cu-8wt.%Al-6wt.%Ag alloys was studied using microhardness measurements with temperature and ageing time, X-ray diffraction patterns (DRX), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM)
Externí odkaz:
https://doaj.org/article/e1f6c50545d740af851732475a4ca0bc
Publikováno v:
Química Nova, Vol 34, Iss 10, Pp 1846-1851 (2011)
The goal of this study was to examine the means used by textbook authors to introduce, define, and explain the electronegativity concept in high school and introductory college chemistry textbooks. Results obtained showed that most textbooks lacked h
Externí odkaz:
https://doaj.org/article/ccaf07725e73419fa5b83e8f3b4fed2f
Autor:
Diogo Silva Pellosi, Vanessa de Gomes Cassia Videira, Bruna Naemi Harada, Vitor Gonçalves Vital, Ricardo Alexandre Galdino da Silva, Suzan Pantaroto de Vasconcellos
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6de489c9c9d924272dfd715a061cef0e
https://doi.org/10.2139/ssrn.4387483
https://doi.org/10.2139/ssrn.4387483
Autor:
J.G.S. Duque, A.C.B. Jesus, E.B. Peixoto, Cristiano T. Meneses, C.C.S. Barbosa, E. C. Mendonça, S.G. Mercena, Ricardo Alexandre Galdino da Silva
Publikováno v:
Journal of Alloys and Compounds. 731:1275-1279
The study of the crystallization process of an amorphous Fe40Ni40P14B6 ribbon which is grown by the melt-spinning is reported. Differential scanning calorimetry (DSC), thermogravimetry (TGA), X-ray diffraction and magnetization measurements are used
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b30860772937358903d3b1a2e2d2b02
https://doi.org/10.1016/j.jallcom.2017.10.062
https://doi.org/10.1016/j.jallcom.2017.10.062
Autor:
Ricardo Alexandre Galdino da Silva, Afonso Chimanski, Luis Antonio Ccopa Ybarra, Izabel Fernanda Machado, Humberto Naoyuki Yoshimura, Sergio Gama
Publikováno v:
Materials Science Forum. 881:307-312
Tungsten carbide (WC) based composites are usually produced with cobalt, but this binder has the inconvenience of shortage, unstable price and potential carcinogenicity. The objective of this study was to develop WC composite with intermetallic Fe3Al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b5a5687984342354bda82f8a161ddfb
https://doi.org/10.4028/www.scientific.net/msf.881.307
https://doi.org/10.4028/www.scientific.net/msf.881.307
Publikováno v:
Journal of Alloys and Compounds. 615:S156-S159
The influence of Mn and Ag additions on the isothermal kinetics of martensite decomposition in the Cu–9wt.%Al alloy was studied using X-ray diffractometry (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDXS) and microh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::704220ccfbb7f3a23c0371d636ce5acc
https://doi.org/10.1016/j.jallcom.2013.11.135
https://doi.org/10.1016/j.jallcom.2013.11.135
Autor:
A. T. Adorno, Ricardo Alexandre Galdino da Silva, Enéas Souza Machado, T.M. Carvalho, A. G. Magdalena
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 109:927-931
The completeness of β-phase decomposition reaction in the Cu–11wt%Al–xwt%Ag alloys (x = 0, 1, 2, and 3) was studied using differential scanning calorimetry (DSC), X-ray diffractometry (XRD), and optical microscopy (OM). The results indicated tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::280e5f0e18fa98d164f45108f26beb82
https://doi.org/10.1007/s10973-011-1815-z
https://doi.org/10.1007/s10973-011-1815-z