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A Comparative Study of Thermal Conductivity in ZnO‐ and SnO 2 ‐Based Varistor Systems
Author(s) -
Bueno P. R.,
Varela J. A.,
Barrado C. M.,
Longo E.,
Leite E. R.
Publication year - 2005
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2005.00469.x
Subject(s) - varistor , materials science , dopant , microstructure , conductivity , thermal conductivity , zinc , composite material , metallurgy , doping , optoelectronics , chemistry , electrical engineering , voltage , engineering
We performed a comparative study of electrical and thermal properties of ZnO‐ and SnO 2 ‐based varistor. The electrical properties of commercial ZnO‐based varistor are equivalent to that found in SnO 2 ‐based varistor system. In spite of this, the SnO 2 showed a thermal conductivity higher than commercial samples of ZnO‐based varistor, which allied with its simpler microstructure and lower dopant concentration is a remarkable result that point out to the use of this system to compete commercially with ZnO‐based varistor devices.