Grain boundary and its related properties of boron added Y-doped BaTiO3 ceramics
✍ Scribed by Joon-Hyung Lee; Young-Woo Heo; Jung-A Lee; Young-Dae Ryoo; Jeong-Joo Kim; Sang-Hee Cho
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 417 KB
- Volume
- 101-103
- Category
- Article
- ISSN
- 0167-2738
No coin nor oath required. For personal study only.
✦ Synopsis
As a sintering aid for Y-doped BaTiO, ceramics, BN and BaB,O, compounds were chosen, and then sintering behavior and PTCR properties of specimens were investigated with the addition of each boron source. Of the various boron source compounds, BaB,O, greatly lowered the densification starting temperature by the formation of liquid phase around 9OO"C, lowered room temperature resistivity and improved PTCR effect of specimens. When boron components were added to BaTiO, ceramics, the mixture of amorphous and crystallized BaB,O, particles were located at triple junction of solid grains. On the other hand, there existed an amorphous thin film of 3 nm thickness at the two grain junction region.