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1. (WO2018197423) METALLIC HONEYCOMB BODY WITH ADHESION-IMPROVING MICROSTRUCTURES

Pub. No.:    WO/2018/197423    International Application No.:    PCT/EP2018/060357
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Tue Apr 24 01:59:59 CEST 2018
IPC: F01N 3/28
B21D 13/04
B21D 13/10
B01D 53/86
Applicants: CONTINENTAL AUTOMOTIVE GMBH
Inventors: STOCK, Holger
HIRTH, Peter
KURTH, Ferdi
HELMER, Olaf
Title: METALLIC HONEYCOMB BODY WITH ADHESION-IMPROVING MICROSTRUCTURES
Abstract:
The present invention relates to a metallic honeycomb body (1) with channels (4) through which a gas can flow, made up of layers of at least partially structured sheet metal (2), wherein the layers of sheet metal (2) have at least in subregions at least two different structures (3, 5), of which the first structure (3), with a greater structure height (H), determines the size of the channels (4) and the second structure (5) has a much smaller structure height (h) between troughs (6) and peaks (7) and wherein the form and/or the structure height (H) of the second structure (5) is chosen such that a ceramic coating (8) applied later can fill the troughs (6) of the second structure (5) on average to at least 10%, in particular at least 50%, of their structure height (h). With the honeycomb body according to the invention, more coating material per unit volume can be sustainably provided in a metallic honeycomb body without excessively increasing pressure loss. This is of advantage particularly for applications for reducing nitrogen oxides (NOx) in diesel exhausts.