EP 3172358 A1 20170531 - METHOD FOR PRODUCING A DIFFUSION BLOCKING LAYER ON A METAL PLATE AND AN EXHAUST GAS TREATMENT UNIT
Title (en)
METHOD FOR PRODUCING A DIFFUSION BLOCKING LAYER ON A METAL PLATE AND AN EXHAUST GAS TREATMENT UNIT
Title (de)
VERFAHREN ZUR ERZEUGUNG EINER DIFFUSIONSSPERRSCHICHT AUF EINEM METALLBLECH UND EINER ABGASBEHANDLUNGSEINHEIT
Title (fr)
PROCÉDÉ DE PRODUCTION D'UNE COUCHE ANTI-DIFFUSION SUR UNE TÔLE MÉTALLIQUE ET UNE UNITÉ DE TRAITEMENT DES GAZ D'ÉCHAPPEMENT
Publication
Application
Priority
- DE 102014110534 A 20140725
- EP 2015066898 W 20150723
Abstract (en)
[origin: WO2016012549A1] The invention relates to a method for producing a diffusion blocking layer (1) comprising aluminum oxide (8) on a metal plate (2), which consists of a base material (3) which contains at least iron (Fe) and chromium (Cr). The aluminum (10) required for forming the aluminum oxide (8) is contained in the base material (3). A layer made of titanium dioxide (4) serves as an oxygen contributor for the oxidation of the aluminum (10) to α-aluminum oxide. The invention further relates to an integration of said method into the production of an exhaust gas treatment unit (12), wherein the exhaust gas treatment unit (12) has a honeycomb body (13) and a housing (14) and at least the honeycomb body (13) or the housing (14) is formed with a metal plate (2) and the metal plate (2) consists of a base material (3) which contains at least iron (Fe) and chromium (Cr). According to the invention, the metal plate (2) comprises a surface layer (7) at least in one sub-region (5) which comprises at least aluminum oxide (8) and titanium oxide (9).
IPC 8 full level
C23C 24/08 (2006.01); B01J 35/04 (2006.01); B23K 35/34 (2006.01); B23K 35/365 (2006.01); C23C 26/00 (2006.01)
CPC (source: CN EP US)
B01D 46/2418 (2013.01 - US); B01D 53/92 (2013.01 - US); B23K 1/0014 (2013.01 - US); B23K 1/20 (2013.01 - CN US); B23K 31/02 (2013.01 - CN); B23K 35/34 (2013.01 - EP US); C21D 6/002 (2013.01 - EP US); C21D 9/0068 (2013.01 - EP US); C22C 38/06 (2013.01 - EP US); C22C 38/18 (2013.01 - EP US); C23C 12/02 (2013.01 - EP US); C23C 24/082 (2013.01 - EP US); F01N 3/2842 (2013.01 - US); B01D 2279/30 (2013.01 - US); B23K 2101/006 (2018.07 - EP US); B23K 2101/02 (2018.07 - EP US); B23K 2101/34 (2018.07 - EP US); C21D 2251/00 (2013.01 - EP US)
Citation (search report)
See references of WO 2016012549A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102014110534 A1 20160128; CN 106573323 A 20170419; EP 3172358 A1 20170531; US 2017159530 A1 20170608; WO 2016012549 A1 20160128
DOCDB simple family (application)
DE 102014110534 A 20140725; CN 201580040964 A 20150723; EP 15747767 A 20150723; EP 2015066898 W 20150723; US 201715415554 A 20170125