Manufacture of piezoelectric ceramics

Abstract

PURPOSE: To obtain piezoelectric ceramics having high conversion efficiency with higher permittivity by mixing magnesium niobate containing specific particle size as material sources for niobium and magnesium with niobium compound and magnesium compound to be used. CONSTITUTION: In a method of manufacturing PbTiO 3 .PbZrO 3 .Pb(Mg 1 / 3 Nb 2 / 3 )O 3 piezoelectric ceramics for mixing, temporarily baking, baking and polarizing niobium compound, magnesium compound, lead compound, titanium compound and zirconium compound, magnesium niobate (Mg 1 / 3 Nb 2 / 3 O 2 ) containing 2μm or less of mean particle size as material sources for niobium and magnesium are mixed with the niobium compound and the magnesium compound. The mixing ratio is desirably ranged so that the total sum (M+N) of the magnesium niobate (MN) of the niobium compound (N) and the magnesium compound (M) is MN:(M+N)=80:20-60:40 (by weight %). COPYRIGHT: (C)1992,JPO&Japio

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (0)

    Publication numberPublication dateAssigneeTitle

NO-Patent Citations (0)

    Title

Cited By (2)

    Publication numberPublication dateAssigneeTitle
    EP-0561616-A3April 19, 1995Ngk Insulators Ltd
    EP-0715361-A1June 05, 1996Murata Manufacturing Co., Ltd.Piezoelektrische keramische Zusammensetzung