Mechanical behavior, properties and reliability of tin-modified lead zirconate titanate.

Watson, Chad Samuel

Sandia National Laboratories

关键词: Flexural Strength;    36 Materials Science;    Pzt;    Bending;    Tin Additions;   

DOI  :  10.2172/918347
RP-ID  :  SAND2003-2422
RP-ID  :  AC04-94AL85000
RP-ID  :  918347

美国|英语

来源: UNT Digital Library

【 摘 要 】

The influences of temperature and processing conditions (unpoled or poled-depoled) on strength, fracture toughness and the stress-strain behavior of tin-modified lead zirconate titanate (PSZT) were evaluated in four-point bending. PSZT exhibits temperature-dependent non-linear and non-symmetric stress-strain behavior. A consequence of temperature dependent non-linearity is an apparent reduction in the flexural strength of PSZT as temperature increases. At room temperature the average stress in the outer-fiber of bend bars was 84 MPa, whereas, for specimens tested at 120 C the average failure stress was only 64 MPa. The load-carrying capacity, however, does not change with temperature, but the degree of deformation tolerated by PSZT prior to failure increased with temperature.