Electrical Properties of Various Composition of Yttrium Doped-Zirconia Prepared from Local Zircon Sand
Doping yttrium ions, Y3+ into ZrO2 produced Yttria-Stabilized Zirconia, YSZ. Various amount of yttrium ions could provide different ionic conductivity. This research investigated electrical conductivity of various YSZ composition, i.e., 4.5; 8.0 and 10% mol yttrium in ZrO2. The ZrO2 powder used...
Main Authors: | , , , |
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Format: | Article |
Language: | English |
Published: |
Universitas Indonesia
2017-10-01
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Series: | International Journal of Technology |
Subjects: | |
Online Access: | http://ijtech.eng.ui.ac.id/article/view/876 |
Summary: | Doping
yttrium ions, Y3+ into ZrO2 produced Yttria-Stabilized
Zirconia, YSZ. Various amount of yttrium ions could provide different ionic conductivity. This research investigated
electrical conductivity of various YSZ composition, i.e., 4.5; 8.0 and 10% mol yttrium in ZrO2. The ZrO2
powder used was synthesized from zircon sand, a side product of tin mining
plant, Bangka Island, Indonesia. Structural investigation on the prepared YSZ
found that yttrium ion doping has changed the crystal structure of ZrO2
from monoclinic to cubic, even though the
monoclinic and tetragonal are also still exist.
The Y3+ doping changed the cell parameter of ZrO2
crystal. It indicates that the Y3+ entered into the ZrO2
structure and produced vacancy sites. The highest ionic conductivity is
provided by 8% mol Yttrium doping or
8YSZ, i.e., 2.74×10-4 S.cm-1
at 700oC with an activation energy
of 0.741 eV. |
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ISSN: | 2086-9614 2087-2100 |