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Sains Malaysiana 43(9)(2014): 1429–1432
Effect of Metal Chloride Pre-Cursor on the Structure of Yb-Doped Ba(Ce, Zr)O3 Ceramics Electrolyte: A Comparative Study with Different Metal Salts (Kesan
Bahan Pelopor Logam Klorida ke atas Struktur Yb Terdop Ba(Ce, Zr)O3 Elektrolit
Seramik: Suatu Kajian Perbandingan antara Garam Logam yang Berbeza)
N. OSMAN1*, M.H. YAAKOB1 & I.A. TALIB2
1Faculty of
Applied Sciences, Universiti Teknologi MARA, 02600 Arau, Perlis, Malaysia
2Faculty of
Science & Technology, Universiti Kebangsaan Malaysia
43600
Bangi, Selangor, Malaysia
Received:
10 February 2012/Accepted: 17 December 2013
ABSTRACT
This paper discusses
the effect of a metal chloride pre-cursor on the phase formation of Yb-doped
Ba(Ce, Zr)O3 solid electrolyte derived
from a sol-gel method via acetate and chloride salts. The use of metal chloride
as a pre-cursor showed the increased in thermal decomposition temperature (Ttd≈1360oC) compared to the
metal nitrate pre-cursor (Ttd≈1280oC)
and (b) leading to the formation of impurity phases. At calcination temperature
of 1500oC, the sample
prepared from metal chloride did not form a single-phase of Ba(Ce, Zr)O3. Impurity phases
of BaCl2, BaCO3 and (Ce, Zr)O2 were detected in the
sample as proven by XRD result.
A high purity compound at relatively lower temperature (T=1400oC) was only
obtained for the sample that prepared from metal nitrate compared to acetate
and chloride (T>1500oC)
and carbonate and oxide (T=1500oC)
pre-cursors.
Keywords: Ceramics;
perovskites; thermal properties; X-ray technique
ABSTRAK
Kertas ini
membincangkan kesan bahan pelopor logam klorida ke atas fasa pembentukan Yb
terdop Ba(Ce, Zr)O3 elektrolit pepejal yang
disediakan secara kaedah sol-gel menggunakan garam berasaskan asetat dan
klorida. Penggunaan logam klorida sebagai bahan pelopor menunjukkan peningkatan
suhu penguraian terma (Ttd≈1360 oC)
berbanding dengan logam nitrat sebagai bahan pelopor (Ttd≈1280oC)
dan menjana ke arah pembentukan fasa bendasing. Pada suhu pengkalsinan 1500oC, sampel yang
disediakan daripada logam klorida tidak membentuk fasa tunggal Ba(Ce, Zr)O3. Fasa bendasing
seperti BaCl2, BaCO3 dan (Ce, Zr)O2 telah dikesan di
dalam sampel seperti disahkan oleh keputusan sinar-X. Sebatian yang
berketulenan tinggi diperoleh pada suhu pengkalsinan yang secara relatifnya
rendah (T=1400oC)
adalah sampel yang disediakan daripada bahan pelopor berasaskan logam nitrat
dibandingkan dengan bahan pelopor berasaskan asetat dan klorida (T>1500oC) dan karbonat dan
oksida (T=1500oC).
Kata kunci: Ciri terma; perovskite; seramik; teknik pembelauan
sinar-X
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*Corresponding author; email: fisha@perlis.uitm.edu.my
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