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	无铅压电陶瓷铌酸钾钠的常压烧结及其电学性能
	张利民 ; 张波萍 ; 李敬锋 ; 王轲 ; 张海龙 ; ZHANG Limin ; ZHANG Boping ; LI Jingfeng ; WANG Ke ; ZHANG Hailong
	2010-06-10 ; 2010-06-10
关键词	铌酸钾钠陶瓷 无铅压电陶瓷 常压烧结 potassium sodium niobate ceramics lead-free piezoceramics normal sintering TM282
其他题名	NORMAL SINTERING OF LEAD-FREE PIEZOCERAMIC POTASSIUM SODIUM NIOBATE AND ITS ELECTRICAL PROPERTIES
中文摘要	用常压烧结方法制备了Na0.5K0.5NbO3(NKN)无铅压电陶瓷。研究了烧结温度与NKN陶瓷的密度、结构以及电学性能的关系。结果表明:NKN陶瓷与KNbO3相似为正交结构,烧结温度超过1080℃时,出现无压电性第二相。在很小的温度范围内(1020～1100℃)烧结体密度有显著不同,当烧结温度为1080℃时,NKN陶瓷烧结密度达到最大值(4.22g/cm3,相对密度为92%)。经1060℃烧结的NKN陶瓷其压电常数最高,达到122pC/N;Curie温度为409℃;矫顽场为9kV/cm;剩余极化强度为15μC/cm2。; Potassium sodium niobate ceramic with a nominal composition of Na0.5K0.5NbO3 (NKN) was fabricated successfully by sintering at 1 020—1 100 ℃ and normal pressure. The effect of sintering temperature on the density, structure and the electric proper- ties of NKN ceramics were investigated. The results show that the crystal phase of the NKN ceramics is an orthorhombic structure similar to that of KNbO3 ceramics, a second phase formed when the sintering temperature is higher than 1 080 ℃. The density of the sintered NKN ceramics changed dramatically in a narrow temperature range of 1 020—1 100 ℃. The density of the ceramics sintered at 1 080 ℃ reached a maximum value of 4.22 g/cm3 (92% of the theoretical density). The ceramic sintered at 1 060 ℃ shows a maximum piezoelectric coefficient of about 122 pC/N and a maximum Curie temperature of 409 ℃, and the coercive field and rema- nent polarization are 9 kV/cm and 15 μC/cm2, respectively.; 国家自然科学基金(50325207,50572008; 清华-丰田汽车国际合作研究(0307J36)资助项目
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/61462]
专题	清华大学
推荐引用方式 GB/T 7714	张利民,张波萍,李敬锋,等. 无铅压电陶瓷铌酸钾钠的常压烧结及其电学性能[J],2010, 2010.
APA	张利民.,张波萍.,李敬锋.,王轲.,张海龙.,...&ZHANG Hailong.(2010).无铅压电陶瓷铌酸钾钠的常压烧结及其电学性能..
MLA	张利民,et al."无铅压电陶瓷铌酸钾钠的常压烧结及其电学性能".(2010).

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