EP 0837956 B1 19990602 - METHOD OF COMPACTING ANODIZED METALS WITH LITHIUM AND FLUORIDE-CONTAINING SOLUTIONS WITHOUT USING HEAVY METALS
Title (en)
METHOD OF COMPACTING ANODIZED METALS WITH LITHIUM AND FLUORIDE-CONTAINING SOLUTIONS WITHOUT USING HEAVY METALS
Title (de)
VERFAHREN ZUM SCHWERMETALLFREIEN VERDICHTEN ANODISIERTER METALLE MIT LITHIUM- UND FLUORID-HALTIGEN LÖSUNGEN
Title (fr)
PROCEDE DE COMPACTAGE DE METAUX ANODISES AVEC DES SOLUTIONS CONTENANT DU LITHIUM ET DU FLUORURE, NE FAISANT PAS INTERVENIR DE METAUX LOURDS.
Publication
Application
Priority
- DE 19524828 A 19950707
- EP 9602848 W 19960629
Abstract (en)
[origin: DE19524828A1] The invention concerns a method of compacting anodized metals without using heavy metals. The method is characterized in that: a) in a first step, the anodized metal is brought into contact for a period of between 3 and 30 minutes (for an anodizing layer thickness of 20 mu m) with an aqueous solution which has a temperature ranging from 15 to 35 DEG C and a pH ranging from 5.0 to 6.5 and contains between 0.1 and 3 g/l lithium ions and between 0.1 and 5 g/l fluoride ions; and b) in a second step, the anodized metal is brought into contact for a period of between 5 and 30 minutes (for an anodizing layer thickness of 20 mu m) with water or an aqueous solution of substances which prevent the formation of a sealing coating, the solution having a pH ranging from 5.5 to 8.5 and a temperature ranging from 80 to 100 DEG C.
IPC 1-7
IPC 8 full level
C25D 11/18 (2006.01)
CPC (source: EP KR US)
C25D 11/18 (2013.01 - EP KR US); C25D 11/246 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
DE 19524828 A1 19970109; AR 002693 A1 19980325; AU 6515396 A 19970210; AU 692113 B2 19980528; CA 2226418 A1 19970130; DE 59602111 D1 19990708; EP 0837956 A1 19980429; EP 0837956 B1 19990602; ES 2135244 T3 19991016; JP H11509579 A 19990824; KR 19990028786 A 19990415; MX 9800083 A 19980331; US 5891269 A 19990406; WO 9703232 A1 19970130
DOCDB simple family (application)
DE 19524828 A 19950707; AR 10346196 A 19960705; AU 6515396 A 19960629; CA 2226418 A 19960629; DE 59602111 T 19960629; EP 9602848 W 19960629; EP 96924816 A 19960629; ES 96924816 T 19960629; JP 50545897 A 19960629; KR 19980700086 A 19980107; MX 9800083 A 19960629; US 98313098 A 19980107