METAL PASTE FOR GAS SENSOR ELECTRODE FORMATION

Title:

METAL PASTE FOR GAS SENSOR ELECTRODE FORMATION

Document Type and Number:

WIPO Patent Application WO/2014/115867

Kind Code:

A1

Abstract:

The present invention provides a metal paste that can be used to manufacture an electrode having high electrode activity as a sensor electrode for various types of gas sensors. The present invention is a metal paste for gas sensor electrode formation, wherein the metal paste is formed by dispersing the following in a solvent: conductive particles comprising Pt or a Pt alloy; and a ceramic powder comprising zirconia or stabilized zirconia, or a combination of either of said zirconia and one or more oxides of La, Ce, Pr, Nd, Sm and Hf. The metal paste further comprises inorganic oxide particles comprising alumina and insoluble particles that are insoluble in the solvent. The inorganic oxide particles are dispersed at a proportion of 0.5%-3.0% by mass and the insoluble particles are dispersed at a proportion of 1.0%-5.0% by mass, on a mass basis relative to the solid content comprising the conductive particles, the ceramic powder, the inorganic oxide particles, and the insoluble particles.

Inventors:

OKAMOTO NOBUHISA (JP)
HOSOI TAKUYA (JP)
AKIYAMA NOBUYUKI (JP)
NAKAI AKIHIRO (JP)
ONOZUMI SHIGEKAZU (JP)

Application Number:

PCT/JP2014/051629

Publication Date:

July 31, 2014

Filing Date:

January 27, 2014

Export Citation:

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Assignee:

TANAKA PRECIOUS METAL IND (JP)

International Classes:

G01N27/409; G01N27/41; G01N27/416

Foreign References:

JP2005283240A	2005-10-13
JP2005133114A	2005-05-26
JP2009289679A	2009-12-10
JP2008164411A	2008-07-17
JP2010256129A	2010-11-11
JP4834170B1	2011-12-14
JP4834170B1	2011-12-14

Other References: