Published 2006 | Version v1
Miscellaneous Open

The influence of precursor powders on the microstructure and properties of B-2212 blocks

Creators

  • 1. Centro de Pesquisas de Energia Eletrica (CEPEL), Rio de Janeiro, RJ (Brazil)
  • 2. Pontificia Universidade Catolica (PUC-Rio), Rio de Janeiro, RJ (Brazil). Dept. de Ciencia dos Materiais e Metalurgia

Description

The Bi-2212 is one of the main HTSC's for applications development. The present work reports our investigations on the partial melt processing of bulk-2212. The precursors were uniaxially pressed into silver molds, which were partially melted, slow cooled and subsequently annealed. Precursor powders with different nominal compositions, with and without silver powder addition were employed. Samples were analyzed by XRD, SEM/EDS and DTA. The DC critical current (lc) was measured by the four-points method (77 K). Although the partial melt processing has been intensively studied, there is still a lack of knowledge on the influence on the final properties of bulk Bi-2212. (author)

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Additional details

Additional titles

Original title (Portuguese)
A influencia do po precursor na microestrutura e nas propriedades do supercondutor Bi-2212 na forma de bulk

Publishing Information

Imprint Pagination
12 p.
Report number
INIS-BR--6446

Conference

Title
Brazilian congress on engineering and materials science
Original Conference Title
17. CBECIMAT: Congresso brasileiro de engenharia e ciencia dos materiais
Acronym
17. CBECIMAT
Dates
15-19 Nov 2006
Place
Foz do Iguacu, PR (Brazil)

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
41019102
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ANNEALING; COOLING; CRYSTALLOGRAPHY; DIFFERENTIAL THERMAL ANALYSIS; HIGH-TC SUPERCONDUCTORS; HUBBARD MODEL; MELTING; PRESSES; PRESSING; SCANNING ELECTRON MICROSCOPY; STRUCTURAL CHEMICAL ANALYSIS; SUPERCONDUCTIVITY; TRANSITION HEAT; X RADIATION; X-RAY DIFFRACTION
Descriptors DEC
COHERENT SCATTERING; CRYSTAL MODELS; DIFFRACTION; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELECTROMAGNETIC RADIATION; ELECTRON MICROSCOPY; ENTHALPY; FABRICATION; HEAT TREATMENTS; IONIZING RADIATIONS; MATERIALS WORKING; MATHEMATICAL MODELS; MICROSCOPY; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; RADIATIONS; SCATTERING; SUPERCONDUCTORS; THERMAL ANALYSIS; THERMODYNAMIC PROPERTIES; TYPE-II SUPERCONDUCTORS

Optional Information

Notes
8 refs., 6 figs. Code: 105-011.pdf