Water-induced degradation in lead zirconate titanate piezoelectric ceramics

Autor:	Helen L. W. Chan, F. C. H. Yiu, Kelvin Ming-Wai Ng, P.C.K. Liu, Wan Ping Chen
Rok vydání:	2002
Předmět:	Materials science Physics and Astronomy (miscellaneous) Electrolysis of water Hydrogen chemistry.chemical_element Lead zirconate titanate Redox Piezoelectricity chemistry.chemical_compound Chemical engineering chemistry Electrode Degradation (geology) Dielectric loss
Zdroj:	Applied Physics Letters. 80:3587-3589
ISSN:	1077-3118 0003-6951
Popis:	Water-induced degradation in lead zirconate titanate (PZT) piezoelectric ceramics was studied by a comparison experiment. In one treatment, PZT rings were immersed in a 0.01 M NaOH solution for long periods of time; in the other treatment, PZT rings were placed in a 0.01 M NaOH solution and hydrogen was evolved onto their silver electrodes by the electrolysis of water. No degradation occurred to samples immersed in the NaOH solution; but for the samples that were also treated by electrolysis of water, serious degradation occurred as their mechanical quality factor decreased dramatically and their dielectric loss increased considerably. I–V measurement showed that the resistance decreased greatly in the degraded samples, which could be explained by the formation of charge carriers due to the reduction reaction of atomic hydrogen from the electrolysis of water. It was proposed that the reduction reaction of atomic hydrogen at ambient temperature is an important origin for the degradation of piezoelectric ce...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b9efa37615c8f69821d6ddf8e2f4097a https://doi.org/10.1063/1.1479205 Zobrazit plný text záznamu