An Efficient Approach for the Direct Synthesis of KNbO3 Powders

被引：9

作者：

Wang, Fen ^{[1
]}

Yang, Haibo ^{[1
]}

Lin, Ying ^{[1
]}

Zhu, Jianfeng ^{[1
]}

机构：

[1] Shaanxi Univ Sci & Technol, Minist Educ, Key Lab Auxiliary Chem & Technol Light Chem Ind, Xian 710021, Peoples R China

来源：

MATERIALS AND MANUFACTURING PROCESSES | 2010年 / 25卷 / 09期

关键词：

Combustion; Direct synthesis; KNbO3; Lead-free piezoelectric ceramics; CHEMICAL-SYNTHESIS;

D O I：

10.1080/15394450902996544

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Pure potassium niobate (KNbO3) powders were prepared at low temperatures by an efficient method using K2CO3 and Nb2O5 as raw materials and urea as fuel. The crystal structure and morphology of the powders were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results reveal that cubic phase KNbO3 powders can be obtained at 550 degrees C by the low-temperature combustion method and with the temperature increasing to 700 degrees C they change to orthorhombic phase KNbO3. The synthesis parameters are studied to reveal the optimized synthesis conditions for preparing pure KNbO3 powders.

引用

页码：994 / 997

页数：4

共 11 条

[1] Preparation and characterization of KNbO3 ceramics [J].

Birol, H ;

Damjanovic, D ;

Setter, N .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2005, 88 (07) :1754-1759

[2] Hydrothermal synthesis of KNbO3 and NaNbO3 powders [J].

Goh, GKL ;

Lange, FF ;

Haile, SM ;

Levi, CG .

JOURNAL OF MATERIALS RESEARCH, 2003, 18 (02) :338-345

[3] Preparation of KNbO3 by hydrothermal reaction [J].

Kumada, N. ;

Kyoda, T. ;

Yonesaki, Y. ;

Takei, T. ;

Kinomura, N. .

MATERIALS RESEARCH BULLETIN, 2007, 42 (10) :1856-1862

[4] Low-Temperature Synthesis of Nanocrystalline KNbO3 [J].

Lin, Ying ;

Yang, Haibo ;

Zhu, Jianfeng ;

Wang, Fen ;

Luo, Hongjie .

MATERIALS AND MANUFACTURING PROCESSES, 2008, 23 (08) :796-799

[5] Synthesis and characterization of nanocrystalline niobates [J].

Liu, JF ;

Li, XL ;

Li, YD .

JOURNAL OF CRYSTAL GROWTH, 2003, 247 (3-4) :419-424

[6] An efficient approach for the direct synthesis of lithium niobate powders [J].

Liu, MN ;

Xue, DF .

SOLID STATE IONICS, 2006, 177 (3-4) :275-280

[7] Chemical synthesis of stoichiometric lithium niobate powders [J].

Liu, MN ;

Xue, DF ;

Zhang, SC ;

Zhu, HY ;

Wang, JY ;

Kitamura, K .

MATERIALS LETTERS, 2005, 59 (8-9) :1095-1097

[8] Novel hydroxide precursors to prepare NaNbO3 and KNbO3 [J].

Muthurajan, H. ;

Kumar, H. H. ;

Samuel, V. ;

Gupta, U. N. ;

Ravi, V. .

CERAMICS INTERNATIONAL, 2008, 34 (03) :671-673

[9] Chemical synthesis of KNbO3 and KNbO3-BaTiO3 ceramics [J].

Pribosic, I ;

Makovec, D ;

Drofenik, M .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2005, 25 (12) :2713-2717

[10] Formation of nanoneedles and nanoplatelets of KNbO3 perovskite during templated crystallization of the precursor gel [J].

Pribosic, I ;

Makovec, D ;

Drofenik, M .

CHEMISTRY OF MATERIALS, 2005, 17 (11) :2953-2958

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