EP 3874075 A2 20210908 - METHOD FOR ALUMINUM ELECTROLESS DEPOSITION
Title (en)
METHOD FOR ALUMINUM ELECTROLESS DEPOSITION
Title (de)
VERFAHREN ZUR STROMLOSEN ABSCHEIDUNG VON ALUMINIUM
Title (fr)
PROCÉDÉ DE DÉPÔT AUTOCATALYTIQUE D'ALUMINIUM
Publication
Application
Priority
- US 201862752769 P 20181030
- IB 2019001180 W 20191030
Abstract (en)
[origin: WO2020089690A2] A method for electroless deposition of aluminum or an aluminum alloy on a substrate surface is provided. The method includes the operations of activating the surface of the substrate to be coated by applying a coating of a catalyst metal; preparing a mixture of urea (NH2CONH2) and anhydrous aluminum chloride (AlCl3) wherein a molar ratio of AlCl3: NH2CONH2 is greater than 1:1 to obtain a Lewis acid room temperature ionic liquid (RTIL) optionally containing an alloy metal salt; dissolving a hydride reducing agent in an aprotic anhydrous solvent to obtain a hydride solution; mixing the hydride solution and the AlCl3: NH2CONH2 RTIL to obtain an electroless Al solution; exposing the activated surface of the substrate to the electroless Al solution; and removing the electroless Al solution from the substrate surface; wherein upon exposure of the activated substrate surface to the electroless Al solution, an Al or Al alloy coating is obtained on the activated substrate surface.
IPC 8 full level
C23C 18/16 (2006.01)
CPC (source: EP US)
C23C 18/1635 (2013.01 - EP); C23C 18/1637 (2013.01 - US); C23C 18/1639 (2013.01 - EP); C23C 18/1687 (2013.01 - EP); C23C 18/1689 (2013.01 - US); C23C 18/1889 (2013.01 - EP); C23C 18/31 (2013.01 - US); C23C 18/52 (2013.01 - EP); C25D 11/04 (2013.01 - EP); C25D 11/06 (2013.01 - EP); C25D 11/08 (2013.01 - EP); C25D 11/10 (2013.01 - EP); C25D 11/243 (2013.01 - EP); C25D 11/246 (2013.01 - EP)
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)
WO 2020089690 A2 20200507; WO 2020089690 A3 20200611; EP 3874075 A2 20210908; EP 3874075 A4 20220831; US 2022002877 A1 20220106; US 2024158919 A1 20240516
DOCDB simple family (application)
IB 2019001180 W 20191030; EP 19880829 A 20191030; US 201917290005 A 20191030; US 202418418533 A 20240122