EP 1841713 A1 20071010 - METHOD FOR PRODUCTION OF CERAMIC SEMICONDUCTORS MADE FROM METAL OXIDES SUCH AS TIN IN PARTICULAR FOR VARISTORS
Title (en)
METHOD FOR PRODUCTION OF CERAMIC SEMICONDUCTORS MADE FROM METAL OXIDES SUCH AS TIN IN PARTICULAR FOR VARISTORS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON KERAMIKHALBLEITERN AUS METALLOXIDEN WIE ZINN, INSBESONDERE FÜR VARISTOREN
Title (fr)
PROCEDE DE PREPARATION DE CERAMIQUES SEMI-CONDUCTRICES CONSTITUEES D'OXYDES DE METAUX TEL QUE L'ETAIN EN PARTICULIER POUR LES VARISTANCES
Publication
Application
Priority
- FR 2006050040 W 20060123
- FR 0550204 A 20050124
Abstract (en)
[origin: WO2006077355A1] The invention relates to a method for production of a ceramic semiconductor, preferably made from at least one base metal oxide which is a simple oxide of a single base metal and at least one doping metal oxide, said ceramic having a porosity less than or equal to 5 %, preferably less than or equal to 3 %, more preferably less than or equal to 1 %, in which the following successive steps are carried out: a powder is provided made up of one or more base metal oxides, said oxides being simple oxides of a single base metal, one or more on base metals in a non-oxidised metallic form, one or more oxides of doping metals and optionally one or more doping metals in a non-oxidised metallic form, said powder is moulded and the moulded powder is sintered. Said ceramic semiconductor may be used for the production of non-linear resistances with regard to voltage and particularly of varistors.
IPC 8 full level
C04B 35/457 (2006.01); C01B 13/32 (2006.01); C04B 35/653 (2006.01); C22C 1/10 (2006.01); C22C 29/12 (2006.01); C22F 1/00 (2006.01); H01C 7/108 (2006.01)
CPC (source: EP)
C01B 13/322 (2013.01); C04B 35/457 (2013.01); C04B 35/6265 (2013.01); C04B 35/62665 (2013.01); C04B 35/628 (2013.01); C04B 35/62805 (2013.01); C04B 35/653 (2013.01); H01C 17/06533 (2013.01); C04B 2235/3227 (2013.01); C04B 2235/3241 (2013.01); C04B 2235/3251 (2013.01); C04B 2235/3267 (2013.01); C04B 2235/3275 (2013.01); C04B 2235/3277 (2013.01); C04B 2235/3284 (2013.01); C04B 2235/40 (2013.01); C04B 2235/5436 (2013.01); C04B 2235/5445 (2013.01); C04B 2235/77 (2013.01); C04B 2235/786 (2013.01)
Citation (search report)
See references of WO 2006077355A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
FR 2881135 A1 20060728; FR 2881135 B1 20080118; BR PI0607011 A2 20091201; EP 1841713 A1 20071010; WO 2006077355 A1 20060727
DOCDB simple family (application)
FR 0550204 A 20050124; BR PI0607011 A 20060123; EP 06709425 A 20060123; FR 2006050040 W 20060123