Solid State Science and Technology, Vol. 12, No 1 (2004) 13-20

 

THE EFFECTS OF CULLET LEVEL IN THE FORMATION OF P2O5 - CaO BASED GLASS.

 

1Mazlina Mat Darus, 2Mohd.Mustamam Abd. Karim, 3Md. Rahim Sahar

1,2Physics Department, Faculty of Science And Technology, Universiti Pendidikan Sultan Idris,

35900, Tg. Malim, Perak, Malaysia,

3Material Science Panel, Physics Department, Faculty of Science, Universiti Teknologi Malaysia,

81310, Skudai, J. Bahru, Johor, Malaysia.

 

 

ABSTRACT

 

Factors in determining the right composition of the starting material for cullet-P2O5-CaO glass  system  were  studied.  The  formation  of  the  glass  is  very  much  compositional dependence and the best sets for the glass formation was found to be in the range between 60 wt% P2O5 + (40 – x) wt% cullet + x wt% CaO where 1 ≤ x ≤ 5. The samples are less hygroscopic as the composition of CaO  which is acting as a modifier increases. The suitable temperature for glass melting was 1450oC and the time needed was 5 hours for the mixture to

melt completely before it can be quenched. The microstructure of the glass samples were examined by Scanning Electron Microscopy (SEM) and X -Ray Diffraction (XRD). The actual composition of the samples were determined by The Energy Dispersive Analysis by X- ray (EDAX).

 

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