Developing of quartz-based porcelain for high-voltage electric insulators

Authors

  • Alan Neves Bonetti UFSC, SC
  • Jony C Tomelin UFSC, SC
  • Orestes Estevam Alarcon UFSC, SC
  • Antônio Pedro Novaes de Oliveira UFSC, SC
  • Dachamir Hotza UFSC, SC

DOI:

https://doi.org/10.5585/exacta.v7i2.1625

Keywords:

Isoladores elétricos de alta tensão. Massas cerâmicas. Porcelana.

Abstract

The fabrication technology of high-voltage ceramic insulators was traditionally developed by using quartz-based porcelain compositions. The objective of this work was to develop an IEC 672 C–110 quartz-based ceramic body for high-voltage insulators according to IEC 672 C–120. Thus, a reference industrial formulation was compared with two other alternative formulations, which show higher alumina and lower free quartz contents. The milling step was also optimized related to time and residue. The raw materials were characterized by XRF and XRD. Ceramic bodies were characterized by laser diffraction and, after firing process, by XRD and SEM. The sintered samples show mechanical strength of about 70 MPa for the standard ceramic body and 100-110 MPa for the alternative ones. The quartz-based ceramic bodies (IEC 672 C–110) developed are in good agreement with the IEC 672 C–120 international standard.

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Author Biographies

Alan Neves Bonetti, UFSC, SC

1 Programa de Pós-Graduação em Ciência e Engenharia de Materiais (PGMAT) - Universidade Federal de Santa Catarina (UFSC)

Jony C Tomelin, UFSC, SC

2 Departamento de Engenharia Mecânica (EMC) - Universidade Federal de Santa Catarina (UFSC)

Orestes Estevam Alarcon, UFSC, SC

1 Programa de Pós-Graduação em Ciência e Engenharia de Materiais (PGMAT) 2 Departamento de Engenharia Mecânica (EMC) Universidade Federal de Santa Catarina (UFSC)

Antônio Pedro Novaes de Oliveira, UFSC, SC

1Programa de Pós-Graduação em Ciência e Engenharia de Materiais (PGMAT) 2 Departamento de Engenharia Mecânica (EMC) - Universidade Federal de Santa Catarina (UFSC)

Dachamir Hotza, UFSC, SC

Doutorado (Pós-Doutorado) Engenharias. 1Programa de Pós-Graduação em Ciência e Engenharia de Materiais (PGMAT) 3Departamento de Engenharia Química (EQA) na Universidade Federal de Santa Catarina (UFSC) dhotza@gmail.com.br (48) 3721 9448

Published

2010-02-07

How to Cite

Bonetti, A. N., Tomelin, J. C., Alarcon, O. E., Oliveira, A. P. N. de, & Hotza, D. (2010). Developing of quartz-based porcelain for high-voltage electric insulators. Exacta, 7(2), 187–194. https://doi.org/10.5585/exacta.v7i2.1625