Zainol I

Department of Chemistry, Faculty of Science and Mathematics, Laman Portal Rasmi Universiti Pendidikan Sultan Idris, 35900 Tanjong Malim, Perak, Malaysia

Publications

Research Article
Effects of Binders and Internal Lubricant Compositions on Mechanical Properties of Dry Pressed Sintered Alumina
Author(s): Jaafar CNA*, Zainol I and Yang WX

This project investigates the effect of polymeric binders and internal lubricant on mechanical properties and microstructure of sintered alumina. Three different formulations of alumina-binders were used which contained 3 wt% of Polyethylene Glycol (PEG) and various amount of polyvinyl alcohol (PVA) from 1 wt% to 3 wt%. About 3 wt% of stearic acid was used as an internal lubricant. Spray dry is the method that used to coat alumina powder with binders. Thermogravimetry analysis (TGA) was applied to determine the decomposition temperature of binders in the alumina-binder samples. Diametral compressive test was conducted to determine the tensile strength meanwhile the microstructure of fracture surface of sintered alumina was characterized by means of Scanning Electron Microscope (SEM). The TGA analysis results show the suitable temperature for debinding .. Read More»

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