Diffusion of calcium in yttria stabilized zirconia ceramics |
| |
Affiliation: | 1. Department of Materials Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea;2. High-Temperature Energy Materials Research Center, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea |
| |
Abstract: | Bulk and grain boundary diffusion of calcium in yttria fully stabilized zirconia was studied in air in the temperature range from 1100 to 1400°C. Secondary ion mass spectrometry (SIMS) was used to determine the diffusion profiles as average concentration vs. depth in the B-type kinetic region. The obtained results allowed the calculation of the temperature dependence of the bulk diffusion coefficient D and the grain boundary diffusion parameter D′δs. Activation energies of these processes amount to 333 and 367 kJ mol−1, respectively. Diffusion data of calcium were compared to those of titanium obtained previously using the same zirconia material. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|