| KNbO_3粉体的低温合成研究 |
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| 引用本文： | 杨海波,林营.KNbO_3粉体的低温合成研究[J].中国陶瓷工业,2010,17(5):27-30. |
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| 作者姓名： | 杨海波 林营 |
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| 作者单位： | 陕西科技大学材料科学与工程学院,西安 710021 |
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| 基金项目： | 陕西科技大学自然科学基金项目 |
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| 摘 要： | 以尿素为燃烧剂,采用低温燃烧法在较低的温度下合成了纯相的KNbO3粉体。采用XRD、SEM和TG-DSC研究了KN晶相的形成过程。结果表明,采用该法可在550℃下合成纯相的KN粉体,当煅烧温度升高至700℃时,立方相的KN粉体转变成了正交相的KN粉体。本研究还就工艺参数对粉体物相的影响进行了讨论。
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| 关 键 词： | 无铅压电陶瓷 KNbO3 低温燃烧 粉体 |
PREPARATION OF KNbO3 POWDERS AT LOW TEMPERATURES |
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| Yang Haibo,Lin Ying.PREPARATION OF KNbO3 POWDERS AT LOW TEMPERATURES[J].China Ceramic Industry,2010,17(5):27-30. |
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| Authors: | Yang Haibo Lin Ying |
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| Affiliation: | Yang Haibo Lin Ying(Shaanxi University of Science and Technology,Xi＇an 710021) |
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| Abstract: | Pure KNbO3 powder was prepared at low temperature by a combustion method using K2CO3 and Nb2O5 as raw materials and urea as fuel.The crystal structure and morphology of the powder were characterized by X-ray diffraction and scanning electron microscope.The results reveal that cubic phase KNbO3 powders can be obtained at 550℃ by the method and with the temperature increasing to 700℃ they change into the orthorhombic phase.The synthesis parameters are studied to reveal the optimized synthesis conditions for preparing pure KNbO3 powders. |
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| Keywords: | lead-free piezoelectric ceramics KNbO3 low-temperature combustion powders |
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