Direct Write Assembly of 3-Dimensional Structures with Aqueous-Based Piezoelectric Inks
A kind of aqueous based suspensions of lead lanthanum zirconnate titanate (PLZT) was developed for direct ink writing (DIW) assembly.Piezoelectric ceramic woodpile structures with diameter of 315-470μm were fabricated from these inks by using DIW.The preparation of aqueous based piezoelectric inks,the principle of DIW and the sintering process were systematically discussed.The ink with solids volume fraction over 70% by 1 day aging reveals shear-thinning behavior and proper viscoelastic properties,which ensures a feasible extrusion in the whole shaping process.The PLZT samples sintered at varying temperatures between 1150 ℃ and 1250 ℃ for 2h or 4 h in either air or a lead-rich atmosphere yielded various microstructures observed by scanning electron microscopy (SEM).Choosing the optimum sintering condition,the sintered products were densified with relative density exceed 98%.The test of X-ray diffraction (XRD) analysis reveals that the main phase of sintered samples is rhombohedral Pb0.93La0.07(Zr0.65Ti0.35)0.9825O3.The direct ink writing technique has advantages of good design ability and rapid forming capability,which opens up a potential route for the design and fabrication of piezoelectric devices.
PLZT aqueous-based inks rheological properties piezoelectric devices
Yayun Li Bo Li Jingbo Sun Kunpeng Cai Ji Zhou Longtu Li
Graduate School at Shenzhen,Tsinghua University,Shenzhen 518055,China;State Key Lab of New Ceramics Graduate School at Shenzhen,Tsinghua University,Shenzhen 518055,China State Key Lab of New Ceramics and Fine Processing,Department of Materials Science and Engineering,Ts
国际会议
The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))
厦门
英文
390-394
2011-11-04（万方平台首次上网日期，不代表论文的发表时间）