IngentaConnect Discharge, microstructural and mechanical properties of ZrO2 addi...

Authors: Jufriadi¹; Sutjipto, A.G.E.²; Othman, R.³; Muhida, R.⁴

Source: Materials Research Innovations, Volume 13, Number 3, September 2009 , pp. 149-152(4)

Abstract:

One of the major parts in the plasma display panel is its protecting layer. MgO thin film has been widely used as a protective layer for dielectric materials. Adding another material to the MgO base material is an alternative method for improving its property as protective layer. A study on reducing the surface discharge potential of a single pure MgO protecting layer by the addition of ZrO₂ with several compositions is presented in this paper. The microstructural and mechanical properties are also described. The discharge properties were measured utilising the flashover treeing for material characterisation, produced by a scanning electron microscope. The mechanical properties were measured using the pure bending moment. The MgO and ZrO₂ powders with 99·95 and 99% purity were used for powder mixtures of various desired compositions. In this work, investigation was carried out for sintered samples at 1250°C for 24 h. From observation, ZrO₂ addition into high purity MgO has influenced the properties of MgO. Since secondary electron emission coefficient contributes in increasing the electrical field of the surface, it could be found that 5 wt-%ZrO₂ added MgO has the highest secondary electron emission coefficient because the charging and discharging process happened within a shorter time.

Keywords: SECONDARY ELECTRON EMISSION; MGO; ZRO2; PROTECTING LAYER; DISCHARGE PROPERTIES

Document Type: Research article

DOI: 10.1179/143307509X437473

Affiliations: 1: Department of Manufacturing and Materials Engineering, International Islamic University Malaysia, Jalan Gombak, 53100 Kuala Lumpur, Malaysia 2: Department of Manufacturing and Materials Engineering, International Islamic University Malaysia, Jalan Gombak, 53100 Kuala Lumpur, Malaysia;, Email: agus@iiu.edu.my 3: Department of Science in Engineering, International Islamic University Malaysia, Jalan Gombak, 53100 Kuala Lumpur, Malaysia 4: Department of Mechatronics Engineering, International Islamic University Malaysia, Jalan Gombak, 53100 Kuala Lumpur, Malaysia

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Discharge, microstructural and mechanical properties of ZrO2 addition on MgO for plasma display panel materials

Discharge, microstructural and mechanical properties of ZrO₂ addition on MgO for plasma display panel materials