The changes on microstructure and electrical properties of Bi:2223/Ag composite as a function of the granulation and the content of the added silver powder
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Data
2005-12-01
Autores
Santos, Dayse Iara dos [UNESP]
Zanata, L. A. G. [UNESP]
Saeki, Margarida Juri [UNESP]
Nunes, Claudia C. [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Trans Tech Publications Ltd
Resumo
The Bi-Sr-Ca-Cu-O system has been one of the most studied superconducting ceramic materials for industry applications. The most of the studies with this aim are on silver/ceramic composites, due to the benefits and great compatibility of this metal with the oxide. In this paper we describe a systematic and comparative study on Ag/BSCCO composite, made by the citrate route, in which the ceramic pellets are sintered in the presence of silver powder using several proportions and having several granulations. It was observed that the introduction of fine (0.5 and 2 μm) silver powder in the proportions of 5 wt. % always implies in a better critical current density compared to the no silver pellet. According to the results, the silver powder in excess of 5 wt.% may not promote best electrical properties, depending on the size of the silver particles.
Descrição
Palavras-chave
Ag/BSCCO composites, Superconducting composites, Ceramic composites, Silver powder, Superconducting ceramic materials, Bismuth, Ceramic materials, Granulation, Microstructure, Powders, Silver, Superconducting materials, Composite materials
Como citar
Materials Science Forum, v. 498-499, p. 388-393.