Publication:
Fabrication and characterization of porcelain insulator added with different amount of zirconium oxide and firing temperature

Loading...
Thumbnail Image
Date
2024-08-01
Authors
Nor Akmalhanin Binti Aziz
Journal Title
Journal ISSN
Volume Title
Publisher
Research Projects
Organizational Units
Journal Issue
Abstract
Porcelain is one of the examples of ceramic materials for insulating applications. The objectives of this research are to determine the effect of adding zirconia and the firing temperature on the properties of porcelain insulator. It is importance to effectively control all the influencing processing parameters during the manufacturing process by an appropriate optimization method. The preliminary experiment is conducted by using Minitab Software integrated with L9 Taguchi orthogonal array then used to fabricate nine porcelain insulators. Three different compositions were prepared using kaolin, potash feldspar, silica, and zirconia as raw materials. The raw materials were first characterized to confirms its purity by using X-ray Diffraction (XRD), X-ray Fluorescence (XRD) and Field Emission Scanning Electron Microscopy (FESEM). Dry mixing and milling method were then applied on the raw material followed by pressing process using hydraulic machine to obtain rectangular shape of samples and drying for 24 hours. The dried samples were further conveyed to the furnace and fired at 1150˚C, 1200˚C and 1250˚C for 2 hours soaking time and 2˚C heating rate. From the results, the optimum composition for this research is composition C fired at 1250°C with apparent porosity of 0.18%, bulk density 2.85g/cm3, dielectric constant of 0.04 x10-¹², and flexural strength of 29.86N/mm2. Combination of highest firing temperature and zirconium as additive are the reason for this result.
Description
Keywords
Citation