Lead-free piezoelectric materials with enhanced fatigue resistance

US8734670B2 · kind B2 · utility

Assignee

• HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. · US

Inventors

• Yu Hong Jeon · Corvallis, US
• David Cann · Leatherhead, GB
• Eric Andrew Patterson · Corvallis, US
• Parkpoom Jarupoom · Corvallis, US
• Brady Gibbons · Corvallis, US
• Peter Mardilovich · Corvallis, US

Key dates

• Filing date: Sep 30, 2010
• Grant date: May 27, 2014
• Expiry date: Sep 30, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/768
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A lead-free piezoelectric ceramic material has the general chemical formula xBi(A0.5Ti0.5)O3-y(Bi0.5K0.5)TiO3-z(Bi0.5Na0.5)TiO3, wherein x+y+z=1, x≠0, and A=Ni or Mg.