Low temperature degradation and defect relationship in YSZ ceramic

Ubenthiran, S. and Ramesh, S. and Purbolaksono, J. and Tan, C.Y. and Teng, W.D. and Amiriyan, M. (2013) Low temperature degradation and defect relationship in YSZ ceramic. In: 1st International Conference on the Science & Engineering of Materials , 13-14 November 2013, Sunway Putra Hotel, Kuala Lumpur, Malaysia.

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In this work, the relationship between tetragonal to monoclinic phase transformation and Photoluminescence (PL) spectrum were studied for 3 mol% YSZ samples sintered in air and argon atmosphere at 1500°C. Low temperature degradation study was c?nducted under autoclave condition containing superheated steam at 180°C and 10 bar vapour pressure for penods up to 12 hours. Photoluminescence (PL) studies was conducted by using a PL spectroscope with He-Cd laser at a wavelength of 325 nm as the excitation Source and the phase content in the zirconia samples was measured using X-ray diffractometer (XRD). The studies concluded that argon gas sintered samples hav~ higher st:uc~ural vacancy than air sintered sample, argon gas sintered sample showed rapid phase transformation than arr smtered sample, and that the defect associated with oxygen vacancies in the zirconia lattice increases with increasing ageing time

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Degradation, oxygen, x-ray, atmosphere, zirconia lattice, spectrum
Subjects: Q Science > Q Science (General)
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Mr. Mohd Safri
Date Deposited: 24 Feb 2016 01:05
Last Modified: 24 Feb 2016 01:05
URI: http://eprints.um.edu.my/id/eprint/15613

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