Ceramic material and electroceramic component comprising the ceramic material

US8147990B2 · kind B2 · utility

Assignee

• EPCOS AG · DE

Inventors

• Claus Cernoch · Klagenfurt, AT
• Adalbert Feltz · Jena, DE

Key dates

• Filing date: Sep 9, 2009
• Grant date: Apr 3, 2012
• Expiry date: Jan 10, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31533
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A ceramic material with a negative temperature coefficient of specific resistance has the general formula [{(SE1III,SE2III)1−x(M1II,M2II)x}(Cr1−y−zMny(Me1III,Me2III)z)O3]. In this formula, SE1III and SE2III are different rare-earth metal cations, M1II and M2II are selected from CaII, SrII, and Me1III and Me2III are redox-stable, trivalent metal cations, wherein the following applies with respect to the parameters: 0<x<1; 0<z<1; 0<y<1−z.