Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Ronaldo Santos da Silva"'
Autor:
Eduardo Antonelli, Ronaldo Santos da Silva, Maria Inês Basso Bernardi, Antonio Carlos Hernandes
Publikováno v:
Materials Research, Vol 16, Iss 6, Pp 1344-1349 (2013)
The present study reports the results of thick films (20-130 µm) produced through electrophoretic deposition of BaTi0.85Zr0.15O3 (BTZ) nanometric powders synthesized by the Pechini's method. The BTZ powderscalcined at 600°C/2h presented a single cr
Externí odkaz:
https://doaj.org/article/0bf7b26eaf64407a8841d75b3611e831
Publikováno v:
Materials Research, Vol 15, Iss 4, Pp 522-529 (2012)
Ba0.77Ca0.23TiO3 ceramics were produced in this work starting from nanopowders synthesized via a polymeric precursor method. By adjusting the pH values of the precursor solutions above 7, it was possible to prepare powders weakly aggregated and with
Externí odkaz:
https://doaj.org/article/9ccbb6b06e2f451b91e1d225c90cb060
Autor:
Ronaldo Santos da Silva, Jean-Claude M'Peko, Lilian da Costa Fontes, Antonio Carlos Hernandes
Publikováno v:
Materials Research, Vol 12, Iss 3, Pp 287-290 (2009)
Development of the positive temperature coefficient of resistivity (PTCR) in Er3+ and Ca2+ co-doped ferroelectric BaTiO3 was studied in this work, with Er3+ being used to act as a donor doping. Irrespective of all the materials showing high densities
Externí odkaz:
https://doaj.org/article/fb2787e1c94444829a362fa7c27a2b86
Autor:
Ronaldo Santos da Silva
Publikováno v:
Biblioteca Digital de Teses e Dissertações da USPUniversidade de São PauloUSP.
Pós nanocristalinos de Ba1-xCaxTiO3(0≤ x ≤ 0.30) foram sintetizados pela primeira vez por meio do método dos precursores poliméricos modificados, em temperaturas relativamente baixas (500°C). Para a densificação dos corpos cerâmicos duas t
Autor:
Francisco Enilton Alves Nogueira, Tallison Oliveira Abreu, Vitor Carvalho Martins, Roterdan Fernandes Abreu, Felipe Felix do Carmo, João Paulo Costa do Nascimento, Anupama Ghosh, Antonio Jefferson Mangueira Sales, Marcelo Antonio Santos da Silva, Ronaldo Santos da Silva, Antonio Sérgio Bezerra Sombra
Publikováno v:
Journal of Electronic Materials. 52:2843-2851
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f42a2252fd5c4ee0c14c1182db771cfe
https://doi.org/10.1007/s11664-023-10248-6
https://doi.org/10.1007/s11664-023-10248-6
Autor:
Ronaldo Santos da Silva, Renato Boschilia Junior, André Luis Bonaventura, Eduardo Antonelli, Rangel Graudiston Aredes
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 146:2411-2415
Lead-free piezoelectric ceramics with perovskite structure can demonstrate excellent properties when their compositions are projected with sequences of specific phase transitions and/or coexistence of phases. The main problem, however, is that the us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78760bb22a9fbf38a6679b1a89eb035c
https://doi.org/10.1007/s10973-020-10543-y
https://doi.org/10.1007/s10973-020-10543-y
Autor:
Marilia Moura de Salles Pupo, Aline Resende Dória, Géssica de Oliveira Santiago Santos, Katlin I.B. Eguiluz, Caio V.S. Almeida, Giancarlo R. Salazar-Banda, Ronaldo Santos da Silva
Publikováno v:
Materials Advances, 2(12)
SnO2-Based materials have attracted much attention in the electrochemical oxidation field due to their high electrocatalytic activity. However, efforts are still required to improve their physical and electrochemical properties. Here we employed a CO
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3520eac5e7877d570d1544f3680c2304
https://doi.org/10.1039/d1ma00004g
https://doi.org/10.1039/d1ma00004g
Autor:
Géssica de Oliveira Santiago Santos, D.C. Silva, Aline Resende Dória, Mariane Martins Silva Pelegrinelli, Giancarlo R. Salazar-Banda, Katlin I.B. Eguiluz, Eliane Bezerra Cavalcanti, Ronaldo Santos da Silva, Danielle Barbosa de Matos
Publikováno v:
Environmental Science and Pollution Research. 28:23634-23646
In this study, binary and ternary mixed metal oxide anodes of Ti/RuO2–Sb2O4 and Ti/RuO2–Sb2O4–TiO2 were prepared using two different heating methods: conventional furnace and alternative CO2 laser heating. The produced anodes were physically an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f5de60d016faae4ff1050783bfb418a
https://doi.org/10.1007/s11356-020-10451-6
https://doi.org/10.1007/s11356-020-10451-6
Autor:
Lílian M. Jesus, Bola Yoon, Rishi Raj, Sanjit Ghose, Ronaldo Santos da Silva, Viviana Avila, Rubens Roberto Ingraci Neto
Publikováno v:
Scripta Materialia. 176:78-82
We report the transformation of an amorphous mixture of Li0.5La0.5TiO3 (LLTO) directly into a single phase dense polycrystal, all within a few seconds at about 800 °C by the flash method. The starting material is a chemically-prepared precursor powd
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc0ee95b4a8888cca887d65c3c7ced28
https://doi.org/10.1016/j.scriptamat.2019.09.037
https://doi.org/10.1016/j.scriptamat.2019.09.037
Autor:
J. C. A. Santos, Ronaldo Santos da Silva, Géssica de Oliveira Santiago Santos, Lucas Gonçalves Magalhães, Giancarlo R. Salazar-Banda, Katlin I.B. Eguiluz, Paulo S. Pizani, D.V. Sampaio, Franciele de Oliveira Freitas Bergamaski
Publikováno v:
Journal of Nanoscience and Nanotechnology. 20:1033-1038
Electrochemical synthesis has been presented as a powerful technique to produce nanoparticles. However, it has been especially focused on noble metal particles, while few studies have been done on oxides production. On the other hand, when partially
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b331fd1bc55c68bd66617b4b1fe6fad
https://doi.org/10.1166/jnn.2020.16920
https://doi.org/10.1166/jnn.2020.16920