Dielectric and piezoelectric properties of PZT-silica fume cement composites

• Main Author: Chaipanich A.
• Format: Article
• Language: English
• Published: 2014
• Online Access: http://www.scopus.com/inward/record.url?eid=2-s2.0-34247107971&partnerID=40&md5=4a015d48d2a0e1a0125c5c705461f8f5; http://cmuir.cmu.ac.th/handle/6653943832/5229
• Institution: Chiang Mai University

PZT-silica fume cement (PZT-SFC) composites were produced using PZT (at 50% and 60% by volume) and silica fume cement (cement containing silica fume of 5% and 10% by weight). PZT-Portland cement with no silica fume was also produced to allow comparison of the results. Dielectric constants of PZT-SFC composites are found to be higher than that of PZT-PC composite where εr value was found to increase with increasing SF content (εr values of composite with SF at 0%, 5% and 10% are 117, 125 and 178, respectively). PZT-SFC composites were successfully poled and d33 results of PZT-SFC composites (d33 = 18 pC/N) were found to be marginally higher than that of PZT-PC composite (d33 = 17 pC/N). SEM micrograph also shows a dense matrix of SFC hydration product surrounding the PZT particles. From the results, these PZT-SFC composites are therefore promising materials for use in structural applications and should be ideal for high strength structures where SFC is used in the host structure. © 2006 Elsevier B.V. All rights reserved.