Study on synthesis and evolution of sodium potassium niobate ceramic powders by an oxalic acid-based sol-gel method

De Qing Zhang; Zi Cheng Qin; Xiu Ying Yang; Hou Bin Zhu; Mao Sheng Cao

doi:10.1007/s10971-010-2320-8

Study on synthesis and evolution of sodium potassium niobate ceramic powders by an oxalic acid-based sol-gel method

De Qing Zhang^*
, Zi Cheng Qin
, Xiu Ying Yang
, Hou Bin Zhu
, Mao Sheng Cao

^*Corresponding author for this work

School of Material Science and Engineering

Qiqihar University
Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

44 Citations (Scopus)

Abstract

Potassium sodium niobate (KNN) ceramic powders by a variation of sol-gel method is synthesized. The metal precursors used for the KNN synthesis are potassium carbonate, sodium carbonate and niobium hydroxide, ethylene glycol are used as chelating and esterification agent, respectively. The effects of amount of oxalic acid (OA) and ethylene glycol (EG), pH value on the stability of the precursor sol were investigated. The evolution of (K_0.5Na _0.5)NbO₃ crystal phase was also investigated by XRD, IR, SEM and TG-DTA. The results showed that stable precursor sol was formed when n_(OA):n_(Mn+) = 3:1, n_(OA):n_(EG) = 1:2 and pH value was in the range of 2.5-3.5. Xerogel was sintered in the range of 500-650 °C to prepare K₆Nb_10.88O₃₀ and Na₂Nb₄O₁₁ powder. Then the compound was sintered at 750 °C to produce perovskite (K_0.5Na _0.5)NbO₃ ceramic powders. The grain size is about 100-200 nm.

Original language	English
Pages (from-to)	31-35
Number of pages	5
Journal	Journal of Sol-Gel Science and Technology
Volume	57
Issue number	1
DOIs	https://doi.org/10.1007/s10971-010-2320-8
Publication status	Published - Jan 2011

Keywords

(KNa)NbO
Oxalic acid
Sol-gel

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10.1007/s10971-010-2320-8

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title = "Study on synthesis and evolution of sodium potassium niobate ceramic powders by an oxalic acid-based sol-gel method",

abstract = "Potassium sodium niobate (KNN) ceramic powders by a variation of sol-gel method is synthesized. The metal precursors used for the KNN synthesis are potassium carbonate, sodium carbonate and niobium hydroxide, ethylene glycol are used as chelating and esterification agent, respectively. The effects of amount of oxalic acid (OA) and ethylene glycol (EG), pH value on the stability of the precursor sol were investigated. The evolution of (K0.5Na 0.5)NbO3 crystal phase was also investigated by XRD, IR, SEM and TG-DTA. The results showed that stable precursor sol was formed when n(OA):n(Mn+) = 3:1, n(OA):n(EG) = 1:2 and pH value was in the range of 2.5-3.5. Xerogel was sintered in the range of 500-650 °C to prepare K6Nb10.88O30 and Na2Nb4O11 powder. Then the compound was sintered at 750 °C to produce perovskite (K0.5Na 0.5)NbO3 ceramic powders. The grain size is about 100-200 nm.",

keywords = "(KNa)NbO, Oxalic acid, Sol-gel",

author = "Zhang, \{De Qing\} and Qin, \{Zi Cheng\} and Yang, \{Xiu Ying\} and Zhu, \{Hou Bin\} and Cao, \{Mao Sheng\}",

year = "2011",

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doi = "10.1007/s10971-010-2320-8",

language = "English",

volume = "57",

pages = "31--35",

journal = "Journal of Sol-Gel Science and Technology",

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TY - JOUR

T1 - Study on synthesis and evolution of sodium potassium niobate ceramic powders by an oxalic acid-based sol-gel method

AU - Zhang, De Qing

AU - Qin, Zi Cheng

AU - Yang, Xiu Ying

AU - Zhu, Hou Bin

AU - Cao, Mao Sheng

PY - 2011/1

Y1 - 2011/1

N2 - Potassium sodium niobate (KNN) ceramic powders by a variation of sol-gel method is synthesized. The metal precursors used for the KNN synthesis are potassium carbonate, sodium carbonate and niobium hydroxide, ethylene glycol are used as chelating and esterification agent, respectively. The effects of amount of oxalic acid (OA) and ethylene glycol (EG), pH value on the stability of the precursor sol were investigated. The evolution of (K0.5Na 0.5)NbO3 crystal phase was also investigated by XRD, IR, SEM and TG-DTA. The results showed that stable precursor sol was formed when n(OA):n(Mn+) = 3:1, n(OA):n(EG) = 1:2 and pH value was in the range of 2.5-3.5. Xerogel was sintered in the range of 500-650 °C to prepare K6Nb10.88O30 and Na2Nb4O11 powder. Then the compound was sintered at 750 °C to produce perovskite (K0.5Na 0.5)NbO3 ceramic powders. The grain size is about 100-200 nm.

AB - Potassium sodium niobate (KNN) ceramic powders by a variation of sol-gel method is synthesized. The metal precursors used for the KNN synthesis are potassium carbonate, sodium carbonate and niobium hydroxide, ethylene glycol are used as chelating and esterification agent, respectively. The effects of amount of oxalic acid (OA) and ethylene glycol (EG), pH value on the stability of the precursor sol were investigated. The evolution of (K0.5Na 0.5)NbO3 crystal phase was also investigated by XRD, IR, SEM and TG-DTA. The results showed that stable precursor sol was formed when n(OA):n(Mn+) = 3:1, n(OA):n(EG) = 1:2 and pH value was in the range of 2.5-3.5. Xerogel was sintered in the range of 500-650 °C to prepare K6Nb10.88O30 and Na2Nb4O11 powder. Then the compound was sintered at 750 °C to produce perovskite (K0.5Na 0.5)NbO3 ceramic powders. The grain size is about 100-200 nm.

KW - (KNa)NbO

KW - Oxalic acid

KW - Sol-gel

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DO - 10.1007/s10971-010-2320-8

M3 - Article

AN - SCOPUS:79751538300

SN - 0928-0707

VL - 57

SP - 31

EP - 35

JO - Journal of Sol-Gel Science and Technology

JF - Journal of Sol-Gel Science and Technology

IS - 1

ER -

Study on synthesis and evolution of sodium potassium niobate ceramic powders by an oxalic acid-based sol-gel method

Abstract

Keywords

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