CHARACTERIZATION OF POLED SINGLE-LAYER PZT FOR PIEZO STACK IN FUEL INJECTION SYSTEM

Conference · Fri Jan 01 00:00:00 EST 2010

OSTI ID:991665

Wang, Hong ^[1]; Matsunaga, Tadashi ^[1]; Lin, Hua-Tay ^[1]

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1. ORNL

Poled single-layer PZT has been characterized in as-extracted and as-received states. PZT plate specimens in the former were extracted from a stack. Flexure strength of PZT was evaluated by using ball-on-ring and 4-point bend tests. Fractography showed that intergranular fractures dominated the fracture surface and that volume pores were the primary strength-limiting flaws. The electric field effect was investigated by testing the PZT in open circuit and coercive field levels. An asymmetrical response on the biaxial flexure strength with respect to the electric field direction was observed. These experimental results will assist reliability design of the piezo stack that is being considered in fuel injection system.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 991665
• Resource Relation: Conference: 34th International Conference on Advanced Ceramics and Composites (ICACC), Daytona Beach, FL, USA, 20100124, 20100129
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
CERAMICS
DEFECTS
DESIGN
ELECTRIC FIELDS
FRACTOGRAPHY
FRACTURES
FUEL INJECTION SYSTEMS
PLATES
RELIABILITY
TESTING