Physical Properties And Microstructures Of Alumina-Based Ceramics

Zakaria, Zulziliana (2016) Physical Properties And Microstructures Of Alumina-Based Ceramics. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text (24 Pages) Physical Properties And Microstructures Of Alumina-Based Ceramics.pdf - Submitted Version Download (1MB)

Abstract

The modem machining industries are widely used in manufacturing fields. The main focuses of the modem machining industries to increase the productivity are the capability of cutting tool to be used in the machining process. The cutting tools should provide a good surface finish, high production rate and minimum wear to produce the high quality of products. Therefore, this project presents the experimental investigation for physical properties and microstructure of alumina based ceramics. The cutting insert was fabricated via the solid state processing route in dry condition. The materials used in the experiment were Ab03, Cr20 3 and YSZ. The value of bulk density, relative density, apparent porosity and percent of shrinkage were observed for variable parameters. The parameters used were 0.6 wt% PEG (1600°C), 0.6 wt% PEG (1700°C), 0.0 wt% PEG (1600°C) and 1.5 wt% PEG (1600°C) with different sintering profile. The values of bulk density of sample were 4.10734, 4.07937, 4.01494 and 3.27250 g/cm3. These value were determined by using Archimedes principle. The length (a and b) and thickness of samples before and after sintered were measured in order to calculate the percent of shrinkage. Meanwhile, a scanning electron microscopy tester has been used to determine the microstructure of the sample. The pore area produced were observed for additional data and discussion of this study. From the analysis, the result showed that the sintered temperature and amount of PEG binder were influence the physical properties and microstructure. The results also showed that porosity occurred on the green body with different parameters. This study, will help to understand the physical properties and microstructure of alumina based ceramics in dry condition and identify the optimum parameters based on the characterization study.

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