Piezoelectric materials for high temperature sensors

Shujun Zhang, Fapeng Yu

Research output: Contribution to journalArticle

357 Citations (Scopus)

Abstract

Piezoelectric materials that can function at high temperatures without failure are desired for structural health monitoring and/or nondestructive evaluation of the next generation turbines, more efficient jet engines, steam, and nuclear/electrical power plants. The operational temperature range of smart transducers is limited by the sensing capability of the piezoelectric material at elevated temperatures, increased conductivity and mechanical attenuation, variation of the piezoelectric properties with temperature. This article discusses properties relevant to sensor applications, including piezoelectric materials that are commercially available and those that are under development. Compared to ferroelectric polycrystalline materials, piezoelectric single crystals avoid domain-related aging behavior, while possessing high electrical resistivities and low losses, with excellent thermal property stability. Of particular interest is oxyborate [ReCa4O (BO3) 3] single crystals for ultrahigh temperature applications (>1000°C). These crystals offer piezoelectric coefficients d eff, and electromechanical coupling factors keff, on the order of 3-16 pC/N and 6%-31%, respectively, significantly higher than those values of α-quartz piezocrystals (∼2 pC/N and 8%). Furthermore, the absence of phase transitions prior to their melting points ∼1500°C, together with ultrahigh electrical resistivities (>106 ωcm at 1000°C) and thermal stability of piezoelectric properties (< 20% variations in the range of room temperature ∼1000°C), allow potential operation at extreme temperature and harsh environments.

Original languageEnglish (US)
Pages (from-to)3153-3170
Number of pages18
JournalJournal of the American Ceramic Society
Volume94
Issue number10
DOIs
StatePublished - Oct 1 2011

Fingerprint

Piezoelectric materials
Temperature sensors
sensor
temperature
crystal
Temperature
electrical resistivity
health monitoring
Single crystals
electrical power
nuclear power
Polycrystalline materials
Jet engines
Quartz
transducer
Electromechanical coupling
phase transition
Structural health monitoring
Steam
turbine

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Zhang, Shujun ; Yu, Fapeng. / Piezoelectric materials for high temperature sensors. In: Journal of the American Ceramic Society. 2011 ; Vol. 94, No. 10. pp. 3153-3170.
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Piezoelectric materials for high temperature sensors. / Zhang, Shujun; Yu, Fapeng.

In: Journal of the American Ceramic Society, Vol. 94, No. 10, 01.10.2011, p. 3153-3170.

Research output: Contribution to journalArticle

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