Effects Of Hot-Spot Temperature, Microstructure And BaA12O4 Addition On Oxygen Sensing Properties Of REBa2CU3O7-δ(RE=Er, Dy) Ceramic Rods / Misbah Hassan

Hassan, Misbah (2012) Effects Of Hot-Spot Temperature, Microstructure And BaA12O4 Addition On Oxygen Sensing Properties Of REBa2CU3O7-δ(RE=Er, Dy) Ceramic Rods / Misbah Hassan. In: The Doctoral Research Abstracts. IPSis Biannual Publication, 1 (1). Institute of Graduate Studies, UiTM, Shah Alam.

Abstract

Oxygen sensing properties of REBa2Cu3O7-d-based (RE123, RE = Er and Dy) ceramics utilizing the hot spot phenomenon have been investigated. Although shorter rods of around 12 mm are more practical for industrial use compared to previously reported rods longer than 30 mm, their oxygen sensing properties have not been previously reported. Bulk 123 materials were synthesized using the conventional solid-state method and fabricated into short rods of around 12-mm length with cross sectional area of 0.65 mm ´ 0.65 mm. In the first part of this study, influence of hot-spot temperature in the range of 160 °C to 810 °C on oxygen sensing behavior of Er123 rods was studied. Simultaneous measurements of hot-spot temperature and output current response in different oxygen partial pressures between 1 % and 100 % with hot-spots operating at temperatures as low as 660 °C in 1 % oxygen partial pressure produced good sensor current stability as well as repeatability. Response time for oxygen sensing was observed to decrease with increasing hot-spot temperature, with minimum value of 0.50 s recorded at 695 °C in 1 % oxygen partial pressure.

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Metadata

Item Type: Book Section
Creators:
CreatorsID Num.
Hassan, MisbahUNSPECIFIED
Subjects: L Education > LB Theory and practice of education > Higher Education > Dissertations, Academic. Preparation of theses > Malaysia
Divisions: Institut Pengajian Siswazah (IPSis) : Institute of Graduate Studies (IGS)
Series Name: IPSis Biannual Publication
Volume: 1
Number: 1
Item ID: 19082
Uncontrolled Keywords: Abstract; Abstract of thesis; Newsletter; Research information; Doctoral graduates; IPSis; IGS; UiTM
URI: http://ir.uitm.edu.my/id/eprint/19082

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