Zobrazeno 1 - 10
of 60
pro vyhledávání: '"E.T. Serra"'
Publikováno v:
ECS Transactions. 42:143-148
This work investigates the electrothermal performance of a fuel cell cogeneration system based on a Proton Exchange Membrane Fuel Cell (PEMFC) unit. A simple way to analyze the performance of a PEMFC at different operating conditions, developed in a
Publikováno v:
Tecnologia em Metalurgia e Materiais. 6:179-184
Varistors are very complex polycrystalline ceramic systems containing several dopants and their electrical properties are directly dependent on the chemical composition and on microstructural characteristics, such as grain size, porosity, twins and p
Publikováno v:
IEEE Transactions on Applied Superconductivity. 19:1823-1826
A shunted bulk Bi-2212 bifilar coil was cooled with liquid nitrogen (77 K) and subjected to controlled fault current tests. Prospective currents achieving 11 kA were limited to about 5 kA (first peak) and to 3 kA (following peaks), under 200-300 V. T
Autor:
E.T. Serra, Marcio Antonio Sens, Carla Vital de Sena, A. Polasek, Fernando Cosme Rizzo Assunção
Publikováno v:
Tecnologia em Metalurgia e Materiais. 4:32-36
Publikováno v:
Tecnologia em Metalurgia e Materiais. 4:1-6
The energy absorption capacity is one of the most important characteristics of a varistor ceramic, since it determines the varistor performance and its useful life. This work has for objective to determine the energy absorption capacity of selected v
Autor:
H.A. Borges, Glória Suzana Gomes de Oliveira, A. Polasek, E.T. Serra, Bojan A. Marinkovic, Luiz Antonio Saléh, Eduardo Novaes Hering, Fernando Cosme Rizzo Assunção
Publikováno v:
Materials Research, Vol 8, Iss 4, Pp 391-394 (2005)
Materials Research v.8 n.4 2005
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research, Volume: 8, Issue: 4, Pages: 391-394, Published: DEC 2005
Materials Research v.8 n.4 2005
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research, Volume: 8, Issue: 4, Pages: 391-394, Published: DEC 2005
The Bi2Sr2Ca2Cu3 O10+x (Bi-2223) is one of the main high temperature superconductors for applications. One of these applications is the Superconductor Fault Current Limiter (SCFCL), which is a very promising high temperature superconducting device. S
Publikováno v:
Materials Chemistry and Physics. 91:301-312
Partial-melting was studied as an alternative to the melt-cast process for the production of Bi-2212 blocks designed for the construction of fault-current limiters. Peritectic melting and solidification of Bi-2212:Ag precursor powder were investigate
Autor:
H.A. Borges, E. Hering, J.H.G. Lima, A. Polasek, Luiz Antonio Saléh, E.T. Serra, G.S. de Oliveira, F. Rizzo
Publikováno v:
IEEE Transactions on Applied Superconductivity. 15:3141-3144
The Bi-2223 performance could be significantly improved by melt processing. However, it is a very difficult task, partly due to the volatility of Pb, its main dopant. On the other hand, it is also a hard task to obtain high Pb-free 2223 amounts, even
Autor:
Bojan A. Marinkovic, Luiz Antonio Saléh, Marcio Antonio Sens, Sike Xia, E.T. Serra, Roberto R. de Avillez, Fernando Cosme Rizzo Assunção
Publikováno v:
Materials Research, Volume: 5, Issue: 2, Pages: 179-186, Published: JUN 2002
Materials Research, Vol 5, Iss 2, Pp 179-186 (2002)
Materials Research v.5 n.2 2002
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research, Vol 5, Iss 2, Pp 179-186 (2002)
Materials Research v.5 n.2 2002
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
The production of bulk Bi2+xSr3-yCa yCu 2O8+delta (Bi-2212) superconductors for fault current limiter application was developed via a partial-melting route. Aiming high Ic (critical current), which is the essential superconducting characteristic for
Publikováno v:
Physica C: Superconductivity. 361:175-180
In this work, Bi-2223/Ag tapes were prepared by the continuous cooling sintering (CCS) method. The results indicate that this method can dramatically extend the optimized sintering temperature window as much as 40°C. Moreover, the total sintering ti