CuO-based sintering aids for low temperature sintering of BaFe12O19 ceramics
Source abstract
Abstract
This paper describes the effect of addition of 2 wt% of CuO, 30 mol% BaO–70 mol% CuO and BaCuO2 liquid phase sintering aids on the densification, microstructure and magnetic properties of BaFe12O19 ceramics. Addition of the sintering aids enabled reduction of the sintering temperature from 1250 °C to 1100 °C. The sintering aids caused abnormal grain growth in ceramics sintered at 1100 °C, with CuO having the strongest effect. All samples sintered at 1250 °C showed abnormal grain growth. Addition of CuO and BaO–CuO caused the grain size distribution to shift to larger values compared to the sample without sintering aid. The effect of the sintering aids on grain growth behavior is explained using the interface-reaction control theory of grain growth. The increase in grain size caused a reduction in coercivity of the samples with sintering aid addition, particularly in the samples sintered at 1100 °C.
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Research context
OpenAlex topics: Magnetic Properties and Synthesis of Ferrites · Microwave Dielectric Ceramics Synthesis · Ferroelectric and Piezoelectric Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Materials Science and Engineering, Chonnam National University Gwangju 500-757Republic of Korea
LG Components R&D Center, LG Innotek Co. Ltd., Ansan-si Gyeonggi-do 426-791Republic of Korea
Dept. of Materials Science and Engineering, Korea Advanced Institute of Science and Technology Daejon 305-701Republic of Korea
Funding
Chonnam National University, 2012 · Chonnam National University LG Innotek Centre
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