Piezoceramic multilayer actuator with stress relief sections and insulation layers in sections without relief zones

US8106565B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Harald Kastl · Wolfsberg, AT
• Christian Reichinger · Alsdorf, DE
• Carsten Schuh · Baldham, DE

Key dates

• Filing date: Dec 19, 2007
• Grant date: Jan 31, 2012
• Expiry date: Jan 30, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/42

Abstract

In a piezoelectric multilayer actuator (1) having micromechanical relief zones (30) and an insulation layer (40) as well as in a method for producing said actuator, as a result of the micromechanical relief zones (30), poling cracks are concentrated in these relief regions (30). This makes it possible to provide the sections I, II, III of the multilayer actuator (1) with an insulation layer (40) which only has an extension behavior similar to the multilayer actuator (1) without poling cracks.