The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 2012
Filed:
Dec. 09, 2009
Shinichiro Kawada, Hikone, JP;
Shinichiro Kawada, Hikone, JP;
Murata Manufacturing Co., Ltd., Nagaokakyo-Shi, Kyoto-fu, JP;
Abstract
A piezoelectric porcelain composition includes a main ingredient represented by a general formula ((1−x)(KNaLi) (NbTa)O−xM2M4O) (where M2 represents Ca, Ba or Sr, M4 represents Zr, Sn or Hf, and 0.005≦x≦0.1, 0≦a≦0.9, 0≦b≦0.1, 0≦a+b≦0.9, and 0≦c≦0.3), and Mn is contained in an amount ranging from 2 to 15 mol, relative to 100 mol of the main ingredient, and the M4 is contained in an amount ranging from 0.1 to 5.0 mol, relative to 100 mol of the main ingredient. Preferably, Ni is contained in an amount ranging from 0.1 to 5.0 mol, relative to 100 mol of the main ingredient, and also preferably Yb, In and the like specific rare earth elements is contained. A ceramic layer in a ceramic base is formed of this piezoelectric porcelain composition. As a result, the degree of sintering in a reductive atmosphere is improved, and a piezoelectric porcelain composition allowing co-sintering with Ni, and a piezoelectric ceramic electronic component using the same are realized.