The durability of HoBa2Cu3O7-δ and HoBa2Cu3O7-δ (with elemental substitution- Sr at Ba site of the ceramics with the hot spot phenomena) / Mohd Farouk Afizal Ismail.

Ismail, Mohd Farouk Afizal (2007) The durability of HoBa2Cu3O7-δ and HoBa2Cu3O7-δ (with elemental substitution- Sr at Ba site of the ceramics with the hot spot phenomena) / Mohd Farouk Afizal Ismail. [Student Project] (Unpublished)

Abstract

A hot spot, which is local area glowing orange appear in HoBa2Cu3O7-δ ceramics the certain voltage is applied to the rod at room temperature. The durability of the rod during a sustained presence of the hot is improved upon substitution of Sr at Ba site. In this experiment, the HoBa2Cu3O7-δ ceramics were prepared using conventional solid-state reaction. The experiment was done using three different samples; HoBa2Cu3O7-δ without any substitution, HoBa2Cu3O7-δ with 0.3 mol% substitution and 0.5 mol% substitution of Sr at Ba site. The samples were cut into rod shape of dimension (0.65 x 0.65 x 12) mm. All the samples were tested for its current-voltage characteristics using the four-point-probe method. The voltages of hot spot appearance were determined. The durability of rod was determined by the time of appearance of hot spot. The results showed different durability for different samples. There are also some differences in power consumptions of the rod due to the Sr substitution content.

Metadata

Item Type: Student Project
Creators:
Creators
Email / ID Num.
Ismail, Mohd Farouk Afizal
UNSPECIFIED
Contributors:
Contribution
Name
Email / ID Num.
Thesis advisor
Mohd Idrus, Laila Hanim (Assoc. Prof)
UNSPECIFIED
Subjects: Q Science > QC Physics > Heat
Q Science > QC Physics > Electricity and magnetism
Divisions: Universiti Teknologi MARA, Shah Alam > Faculty of Applied Sciences
Programme: Bachelor of Science (Hons.) Physics
Keywords: Ceramics, Hot spot phenomena, Durability
Date: 2007
URI: https://ir.uitm.edu.my/id/eprint/45224
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