Synthesis and Dispersity of YBCO Powder Produced by Oxalic Acid Precipitation Method-Reference-Cited by-同舟云学术

Synthesis and Dispersity of YBCO Powder Produced by Oxalic Acid Precipitation Method

Published:2015-05 Issue: Volume:645-646 Page:145-150
ISSN:1662-9795
Container-title:Key Engineering Materials
language:
Short-container-title:KEM

Author:

Wang Ai Qin¹,Han Hui Hui¹,Li Min¹,Xie Jing Pei¹,Wu Qing Jie²,Ma Dou Qin²

Affiliation:

1. Henan University of Science and Technology

2. Zhengzhou University

Abstract

The YBCO powder was prepared by oxalic acid precipitation method and consequent annealing. The correlation between pH values of oxalic acid solution and the precipitation percentage of precursors were analysed based on thermodynamics analysis. The differential scanning calorimetryanalysis (DSC) was used to confirm the synthetic technological parameter. The phases of powder in each process were investigated by XRD. The microstructures of each powder were tested by SEM and TEM. The mean grain size was calculated by the scherrer’s equation. The test results indicated that the YBCO powder with high purity, less impurities, smaller particle, but severe agglomeration, was Y123 when annealing at 900°C. However, adding dispersants could effectively solve the severe agglomeration. The size of YBCO particles was nanosized and coincided with the calculation.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

Link

https://www.scientific.net/KEM.645-646.145.pdf

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