Preparation of sol-bonded lead zirconate titanate ceramics via sol-gel and mixed-oxide methods

• Main Authors: Sangsubun C., Watcharapasorn A., Naksata M., Tunkasiri T., Jiansirisomboon S.
• Format: Conference or Workshop Item
• Language: English
• Published: 2014
• Online Access: http://www.scopus.com/inward/record.url?eid=2-s2.0-75449114441&partnerID=40&md5=84f7fd02c9f9b8993bc051a48c2ea382; http://cmuir.cmu.ac.th/handle/6653943832/5150
• Institution: Chiang Mai University

PZT ceramics were prepared from a mixture of a mixed-oxide powder with the particles as large as 1 m, and a sol from a triol sol-gel method. The latter provided small particles of ∼20-100 nm after being calcined at 600°C. This mixture thus so called 'sol-bonded PZT powder'. The powder was sintered at the temperature between 950-1200°C. X-ray diffraction results suggested that phases were changed from predominant rhombohedral to tetragonal with increasing the sintering temperature. The maximum room temperature dielectric constant of 1471 at 1 kHz could be achieved in the ceramic sintered at 1100°C, where the densification was optimized.