The Precipitation of the Pb-compounds from Pb-substituted Bi-2201 Phase-Comparison of Precipitation Behavior in the 2201 and the 2223 Phases-

Toshinobu Niinae; Yoshihiro Kusano; Jun Takada

doi:10.2497/jjspm.41.392

The Precipitation of the Pb-compounds from Pb-substituted Bi-2201 Phase-Comparison of Precipitation Behavior in the 2201 and the 2223 Phases-

Toshinobu Niinae, Yoshihiro Kusano, Jun Takada

Faculty of Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Theimal behavior of the Pb-substituted Bi-2201 with various compositions was examined by XRD and SEM. Bulk samples were annealed in the temperature range from 600°C to 800°C and subsequently reheated at 750°C to 830°C in air. Various Pb-compounds precipitate by annealing in the temperature range from 600°C to 800°C and dissolution of the precipitates by subsequent reheating in the temperature range from 750°C to 830°C. The kind of the Pb-compounds and the temperature range in which these reactions occur depend upon the composition of the “2201” phase. The precipitation and dissolution of the Pb-compounds were confirmed with morphological observations with a SEM of a fixed portion of a sample before and after heat treatments. Remarkable grain-growth of the “2201” phase was observed in Bi_1.7Pb_0.8Sr_1.5CuO_z reheated at 750°C, indicating the formation of liquid.

Original language	English
Pages (from-to)	392-395
Number of pages	4
Journal	Journal of the Japan Society of Powder and Powder Metallurgy
Volume	41
Issue number	4
DOIs	https://doi.org/10.2497/jjspm.41.392
Publication status	Published - Feb 1 1994

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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abstract = "Theimal behavior of the Pb-substituted Bi-2201 with various compositions was examined by XRD and SEM. Bulk samples were annealed in the temperature range from 600°C to 800°C and subsequently reheated at 750°C to 830°C in air. Various Pb-compounds precipitate by annealing in the temperature range from 600°C to 800°C and dissolution of the precipitates by subsequent reheating in the temperature range from 750°C to 830°C. The kind of the Pb-compounds and the temperature range in which these reactions occur depend upon the composition of the “2201” phase. The precipitation and dissolution of the Pb-compounds were confirmed with morphological observations with a SEM of a fixed portion of a sample before and after heat treatments. Remarkable grain-growth of the “2201” phase was observed in Bi1.7Pb0.8Sr1.5CuOz reheated at 750°C, indicating the formation of liquid.",

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N2 - Theimal behavior of the Pb-substituted Bi-2201 with various compositions was examined by XRD and SEM. Bulk samples were annealed in the temperature range from 600°C to 800°C and subsequently reheated at 750°C to 830°C in air. Various Pb-compounds precipitate by annealing in the temperature range from 600°C to 800°C and dissolution of the precipitates by subsequent reheating in the temperature range from 750°C to 830°C. The kind of the Pb-compounds and the temperature range in which these reactions occur depend upon the composition of the “2201” phase. The precipitation and dissolution of the Pb-compounds were confirmed with morphological observations with a SEM of a fixed portion of a sample before and after heat treatments. Remarkable grain-growth of the “2201” phase was observed in Bi1.7Pb0.8Sr1.5CuOz reheated at 750°C, indicating the formation of liquid.

AB - Theimal behavior of the Pb-substituted Bi-2201 with various compositions was examined by XRD and SEM. Bulk samples were annealed in the temperature range from 600°C to 800°C and subsequently reheated at 750°C to 830°C in air. Various Pb-compounds precipitate by annealing in the temperature range from 600°C to 800°C and dissolution of the precipitates by subsequent reheating in the temperature range from 750°C to 830°C. The kind of the Pb-compounds and the temperature range in which these reactions occur depend upon the composition of the “2201” phase. The precipitation and dissolution of the Pb-compounds were confirmed with morphological observations with a SEM of a fixed portion of a sample before and after heat treatments. Remarkable grain-growth of the “2201” phase was observed in Bi1.7Pb0.8Sr1.5CuOz reheated at 750°C, indicating the formation of liquid.

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The Precipitation of the Pb-compounds from Pb-substituted Bi-2201 Phase-Comparison of Precipitation Behavior in the 2201 and the 2223 Phases-

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