Low temperature sintering of the alkali-niobate ceramics

Hwi Yeol Park; Sahn Nahm

doi:10.1007/978-1-4419-9598-8_4

Low temperature sintering of the alkali-niobate ceramics

Hwi Yeol Park, Sahn Nahm

Department of Materials Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Chapter

1 Citation (Scopus)

Abstract

(Na<inf>1-x</inf>K<inf>x</inf>)NbO<inf>3</inf> (NKN)-based lead-free ceramics have been extensively investigated for the replacement of Pb(Zr,Ti)O<inf>3</inf> (PZT)-based ceramics because of their high piezoelectric properties. However, the high sintering temperatures of NKN-based ceramics caused Na<inf>2</inf>O evaporation during sintering. Moreover, the Na<inf>2</inf>O evaporation reduced the polling efficiency and changed the microstructure and eventually degraded the piezoelectric properties of the NKN-based ceramics. Therefore, because the Na<inf>2</inf>O evaporation occurred at temperatures above 1,000°C, it is necessary to find a method to reduce the sintering temperature of the NKN-based ceramics to below 1,000°C in order to obtain reliable piezoelectric properties. In general, two methods have been used to reduce the sintering temperature of NKN-based ceramics (1) addition of sintering aids and (2) spark plasma sintering (SPS). In this chapter, detailed discussions about these two methods will be presented.

Original language	English
Title of host publication	Lead-Free Piezoelectrics
Publisher	Springer New York
Pages	121-137
Number of pages	17
ISBN (Print)	9781441995988, 1441995978, 9781441995971
DOIs	https://doi.org/10.1007/978-1-4419-9598-8_4
Publication status	Published - 2013 Nov 1

ASJC Scopus subject areas

General Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/978-1-4419-9598-8_4

Cite this

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title = "Low temperature sintering of the alkali-niobate ceramics",

abstract = "(Na1-xKx)NbO3 (NKN)-based lead-free ceramics have been extensively investigated for the replacement of Pb(Zr,Ti)O3 (PZT)-based ceramics because of their high piezoelectric properties. However, the high sintering temperatures of NKN-based ceramics caused Na2O evaporation during sintering. Moreover, the Na2O evaporation reduced the polling efficiency and changed the microstructure and eventually degraded the piezoelectric properties of the NKN-based ceramics. Therefore, because the Na2O evaporation occurred at temperatures above 1,000°C, it is necessary to find a method to reduce the sintering temperature of the NKN-based ceramics to below 1,000°C in order to obtain reliable piezoelectric properties. In general, two methods have been used to reduce the sintering temperature of NKN-based ceramics (1) addition of sintering aids and (2) spark plasma sintering (SPS). In this chapter, detailed discussions about these two methods will be presented.",

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AU - Park, Hwi Yeol

AU - Nahm, Sahn

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N2 - (Na1-xKx)NbO3 (NKN)-based lead-free ceramics have been extensively investigated for the replacement of Pb(Zr,Ti)O3 (PZT)-based ceramics because of their high piezoelectric properties. However, the high sintering temperatures of NKN-based ceramics caused Na2O evaporation during sintering. Moreover, the Na2O evaporation reduced the polling efficiency and changed the microstructure and eventually degraded the piezoelectric properties of the NKN-based ceramics. Therefore, because the Na2O evaporation occurred at temperatures above 1,000°C, it is necessary to find a method to reduce the sintering temperature of the NKN-based ceramics to below 1,000°C in order to obtain reliable piezoelectric properties. In general, two methods have been used to reduce the sintering temperature of NKN-based ceramics (1) addition of sintering aids and (2) spark plasma sintering (SPS). In this chapter, detailed discussions about these two methods will be presented.

AB - (Na1-xKx)NbO3 (NKN)-based lead-free ceramics have been extensively investigated for the replacement of Pb(Zr,Ti)O3 (PZT)-based ceramics because of their high piezoelectric properties. However, the high sintering temperatures of NKN-based ceramics caused Na2O evaporation during sintering. Moreover, the Na2O evaporation reduced the polling efficiency and changed the microstructure and eventually degraded the piezoelectric properties of the NKN-based ceramics. Therefore, because the Na2O evaporation occurred at temperatures above 1,000°C, it is necessary to find a method to reduce the sintering temperature of the NKN-based ceramics to below 1,000°C in order to obtain reliable piezoelectric properties. In general, two methods have been used to reduce the sintering temperature of NKN-based ceramics (1) addition of sintering aids and (2) spark plasma sintering (SPS). In this chapter, detailed discussions about these two methods will be presented.

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ER -

Low temperature sintering of the alkali-niobate ceramics

Abstract

ASJC Scopus subject areas

UN SDGs

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