Surface breakdown property of SiO2 added MgO under electron bombardment in vacuum: a promising materials for spacecraft and space station

Sutjipto, Agus Geter Edy (2007) Surface breakdown property of SiO2 added MgO under electron bombardment in vacuum: a promising materials for spacecraft and space station. Canadian Journal of Pure and Applied Sciences, 1 (1). pp. 73-77. ISSN 1715-9997

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Abstract

A surface breakdown (flashover) might occur on the surface of an insulator when it was bombarded by electron beam until exceeding a critical value. The strength of SiO2 added MgO to withstand flashover treeing appearance was evaluated by bombarding the samples by 25 keV electron beam generated by a scanning electron microscope. There was a significant increase of bombardment-time to initiate surface breakdown when SiO2 addition was 6 wt%. This compound was about 5 times better in withstanding breakdown compared with materials commonly used in spacecraft such as teflon, kapton and milar materials. It could be considered that 6 wt% SiO2 added MgO became a promising material for spacecraft and space station where space radiation may damage spacecraft body or influence the communication system.

Item Type:	Article (Journal)
Additional Information:	4703/8677
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA401 Materials of engineering and construction
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Dr Agus Geter Edy Sutjipto
Date Deposited:	06 Apr 2012 15:29
Last Modified:	06 Apr 2012 15:29
URI:	http://irep.iium.edu.my/id/eprint/8677

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