EP 0353196 A1 19900131 - Electroconductive cermet compositions for ignition and heating appliances.

Title (en)

Electroconductive cermet compositions for ignition and heating appliances.

Title (de)

Zusammensetzungen von elektroleitendem Cermet für Zündungs- und Heizungsanordnungen.

Title (fr)

Composition de cermet conducteur pour dispositifs d'allumage et de chauffage.

Publication

EP 0353196 A1 19900131 (EN)

Application

EP 89810563 A 19890724

Priority

CH 287688 A 19880728

Abstract (en)

These compositions comprise a metal powder dispersed in an alumina-based ceramic matrix. The grains of the powder are partly oxidized to an adherent surface film of oxide which imparts thereto enhanced affinity and reinforcement properties to the matrix. Spark-and glow-plugs electrodes manufactured from these cermets demonstrate outstanding resistance to hot-corrosion and electro-erosion.

IPC 1-7

C22C 29/12; F23Q 7/00; H01T 13/39

IPC 8 full level

C22C 1/05 (2006.01); C22C 29/12 (2006.01); C22C 32/00 (2006.01); F02P 13/00 (2006.01); F23Q 7/00 (2006.01); H01C 7/00 (2006.01); H01T 13/39 (2006.01); H05B 3/14 (2006.01)

CPC (source: EP KR)

C22C 29/12 (2013.01 - EP); F23Q 7/001 (2013.01 - EP); H01B 1/02 (2013.01 - KR); H01T 13/39 (2013.01 - EP); F23Q 2007/004 (2013.01 - EP)

Citation (search report)

[A] US 4659960 A 19870421 - TOYA AKIHIRO [JP], et al
[AD] EP 0171153 A1 19860212 - GEN MOTORS CORP [US]
[A] DE 3038649 A1 19810423 - NGK SPARK PLUG CO [JP]
[A] PATENT ABSTRACTS OF JAPAN vol. 6, no. 74 (M-127)(952) 11 May 1982, & JP-A-57 012 221 (HITACHI SEISAKUSHO K.K.) 22 January 1982,

Designated contracting state (EPC)

BE DE ES FR GB IT

DOCDB simple family (publication)

EP 0353196 A1 19900131; EP 0353196 B1 19930519; AR 241806 A1 19921230; AU 3899189 A 19900503; AU 603737 B2 19901122; CH 676525 A5 19910131; DE 68906610 D1 19930624; DE 68906610 T2 19931125; JP H02250938 A 19901008; KR 900002344 A 19900228; KR 920000219 B1 19920110; MX 170365 B 19930818; ZA 895656 B 19900725

DOCDB simple family (application)

EP 89810563 A 19890724; AR 31451989 A 19890727; AU 3899189 A 19890726; CH 287688 A 19880728; DE 68906610 T 19890724; JP 19157389 A 19890726; KR 890010514 A 19890725; MX 1694689 A 19890727; ZA 895656 A 19890725