Performance of zinc oxide varistor discs sintered by alternative orientations

Processing of ZnO varistor discs undergoes several steps. Sintering is a major step for which electric kilns with a set temperature profile are commonly used. Cylindrical green compacts are placed vertically upon some ceramic tray called sagger. To prevent the contamination from the direct contact o...

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Main Authors:	Karim, A.N. Mustafizul, Hashmi, M. S. J.
Format:	Conference or Workshop Item
Language:	English
Published:	2005
Subjects:	T Technology (General) T58.7 Production capacity. Manufacturing capacity
Online Access:	http://irep.iium.edu.my/26869/ http://irep.iium.edu.my/26869/1/Alt_Confg_ZnO_%2313.pdf

id	iium-26869
recordtype	eprints
spelling	iium-268692013-08-26T03:41:09Z http://irep.iium.edu.my/26869/ Performance of zinc oxide varistor discs sintered by alternative orientations Karim, A.N. Mustafizul Hashmi, M. S. J. T Technology (General) T58.7 Production capacity. Manufacturing capacity Processing of ZnO varistor discs undergoes several steps. Sintering is a major step for which electric kilns with a set temperature profile are commonly used. Cylindrical green compacts are placed vertically upon some ceramic tray called sagger. To prevent the contamination from the direct contact of the sagger, a liner material (made of ZnO) is used. The liner material is changed after a few cycles as it gets contaminated due to the exposure of high temperature reactions. Despite this change, the adverse effects arising out of the contact face of the disc cannot be avoided completely. Four orientations including the control were investigated to assess the extent of the undesirable effects. Apart from the control, the other three alternative orientations were Vee-groove support, thin sintered discs and green discs. Similar to the control, in the last two orientations the varistor discs were kept in vertical condition. Performance parameters such as energy absorption capability and high current behavior of the varistor discs were evaluated. Adverse effects due to the contact with liner materials were found to vary depending on the type of orientation. Some of these orientations have demonstrated superior performance of the varistor discs compared to the control. 2005 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/26869/1/Alt_Confg_ZnO_%2313.pdf Karim, A.N. Mustafizul and Hashmi, M. S. J. (2005) Performance of zinc oxide varistor discs sintered by alternative orientations. In: ATCi2005, Conference on Advanced Materials, 6 - 8 Dec. 2005, Putrajaya, Malaysia.
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	T Technology (General) T58.7 Production capacity. Manufacturing capacity
spellingShingle	T Technology (General) T58.7 Production capacity. Manufacturing capacity Karim, A.N. Mustafizul Hashmi, M. S. J. Performance of zinc oxide varistor discs sintered by alternative orientations
description	Processing of ZnO varistor discs undergoes several steps. Sintering is a major step for which electric kilns with a set temperature profile are commonly used. Cylindrical green compacts are placed vertically upon some ceramic tray called sagger. To prevent the contamination from the direct contact of the sagger, a liner material (made of ZnO) is used. The liner material is changed after a few cycles as it gets contaminated due to the exposure of high temperature reactions. Despite this change, the adverse effects arising out of the contact face of the disc cannot be avoided completely. Four orientations including the control were investigated to assess the extent of the undesirable effects. Apart from the control, the other three alternative orientations were Vee-groove support, thin sintered discs and green discs. Similar to the control, in the last two orientations the varistor discs were kept in vertical condition. Performance parameters such as energy absorption capability and high current behavior of the varistor discs were evaluated. Adverse effects due to the contact with liner materials were found to vary depending on the type of orientation. Some of these orientations have demonstrated superior performance of the varistor discs compared to the control.
format	Conference or Workshop Item
author	Karim, A.N. Mustafizul Hashmi, M. S. J.
author_facet	Karim, A.N. Mustafizul Hashmi, M. S. J.
author_sort	Karim, A.N. Mustafizul
title	Performance of zinc oxide varistor discs sintered by alternative orientations
title_short	Performance of zinc oxide varistor discs sintered by alternative orientations
title_full	Performance of zinc oxide varistor discs sintered by alternative orientations
title_fullStr	Performance of zinc oxide varistor discs sintered by alternative orientations
title_full_unstemmed	Performance of zinc oxide varistor discs sintered by alternative orientations
title_sort	performance of zinc oxide varistor discs sintered by alternative orientations
publishDate	2005
url	http://irep.iium.edu.my/26869/ http://irep.iium.edu.my/26869/1/Alt_Confg_ZnO_%2313.pdf
first_indexed	2023-09-18T20:39:58Z
last_indexed	2023-09-18T20:39:58Z
_version_	1777409299452002304

Performance of zinc oxide varistor discs sintered by alternative orientations

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