Microstructure, Mechanical Properties, and Electrical Resistivities of Mica Glass-Ceramics with Flake Phlogopite and Waste Glass

Abstract:

Mica glass-ceramics can be applied in all kinds of electrical equipment, locomotive internal circuits in high-speed rail, ordinary electric locomotive and subway locomotive. In this study, mica glass-ceramics were prepared by sintering process using flake mica and waste glass as the main raw material with low cost. Different mica glass-ceramic samples were fabricated by changing the formula of raw materials, molding process and sintering temperature. X-ray diffraction, scanning electron microscopy, three-point bending test, and balanced-bridge technique were applied to investigate the phase, microstructure, mechanical and electrical resistivities of the samples, respectively. The results show that the optimum sintering temperature is 900 to 1000 °C holding for two hours, the desirable ratio is 70 wt% of mica powder while 30 wt% of glass powder. In that condition the sample could be less porosity, high flexural strength (63.3 MPa) and eligible electrical resistivity (0.4×1013 Ω·cm).

• Periodical: Key Engineering Materials (Volumes 602-603)
• Pages: 640-643
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.602-603.640
• Online since: March 2014
• Authors: Yu Fei Chen, Yan Gai Liu, Xiao Wen Wu*, Zhao Hui Huang, Ming Hao Fang
• Keywords: Electrical Resistivities, Mica Glass-Ceramic, Waste Glass

References

[1] P. Wang, L. Yu, H. Xiao, Y. Cheng, S. Lian, Influence of nucleation agents on crystallization and machinability of mica glass-ceramics, Ceramics International. 35 (2009) 2633–2638.

DOI: 10.1016/j.ceramint.2009.02.030

[2] Anuson Niyompan, Sarawut Phumas, Rungnapa Tipakontitikul, Tawee Tunkasiri, Phase formation, microstructure and electrical properties of mica glass-ceramics containing Cr2O3 produced by heat treatment, Ceramics International. 39 (2013) S427–S431.

DOI: 10.1016/j.ceramint.2012.10.107

[3] E. He, H. Chen, Investigation on the technical characteristics and application status of mica-ceramic composite insulator, Ekcttic Locomotives and Mass Transit Vehicles. 1672–1187 (2011) 03–0045–03.

[4] Hong Li, Changren Zhou, Junguo Ran, Properties of High Strength Machining Dental Glass Ceramic, Chinese Journal of Biomedical Engineering. 0258–8021 (2005) 06–0767–04.

[5] S. Wu, H. He, F. Huang, Lixin Gao, Feng Li, Wei Zhao, Comparison of f luor-mica glass-ceramics made by melt-casting and sintering methods, J Pract Stomatol. 1001–3733. 2009. 06. 14.

[6] S. Wu, Zhongyi Wang, Xiaogang Cao and Jiemo Tian, Fabricating fluorosilicic mica glass-ceramic by sintering, Chinese Journal Aesthetic Medicine. 11008–6455 (2003) 05–0458–0.