摘要
为制备具有高密度、单一正交铁电相及优异压电性能的大尺寸(直径D=25mm,厚度d=3mm)PbNb2O6基压电陶瓷,研究了900℃预烧获得的三方相粉体(PBNT/R)和1 250℃预烧获得的正交相粉体(PBNT/O)对陶瓷晶体结构、微观形貌、介电及压电性能的影响。结果表明:正交相预烧粉体制备的陶瓷,显微结构较致密,其平均晶粒尺寸更小(11.9μm),同时表现出了较高的压电性能(d33=82pC/N),适用于高温压电传感器。
To obtain large-size（diameter=25 mm,thickness=3 mm）PbNb2O6-based ceramics with high density,single orthorhombic phase and improved piezoelectric properties,effects of powders calcined at 900 ℃ with rhombohedral phase（PBNT/R）and the ones calcined at 1 250 ℃ with orthorhombic phase（PBNT/O）on crystallite structure,microstructure,dielectric and piezoelectric properties of the ceramics were studied.Results showed that the ceramics fabricated from the calcined powders with the orthorhombic phase demonstrated the excellent piezoelectric properties（d_（33）=82pC/N）and fine microstructure（average grain size=11.9μm）,it can be used as piezoelectric transducers operating at high temperature.
出处
《中国科技论文》
CAS
北大核心
2016年第11期1305-1309,共5页
China Sciencepaper
基金
高等学校博士学科点专项科研基金资助项目(20120202110004)
关键词
偏铌酸铅
压电性能
正交相
冷等静压
PbNb2O6
piezoelectric properties
orthorhombic phase
cool isostatic pressure
