EP 0799326 A1 19971008 - LOW SLUDGING COMPOSITION AND PROCESS FOR TREATING ALUMINUM AND ITS ALLOYS
Title (en)
LOW SLUDGING COMPOSITION AND PROCESS FOR TREATING ALUMINUM AND ITS ALLOYS
Title (de)
AUSSCHEIDUNGSARME ZUSAMMENSETZUNG UND VERFAHREN ZUM BEHANDELN VON ALUMINIUM UND SEINEN LEGIERUNGEN
Title (fr)
COMPOSITIONS RESISTANT A LA PRECIPITATION ET PROCEDE DE TRAITEMENT DE L'ALUMINIUM ET DE SES ALLIAGES
Publication
Application
Priority
- JP 32054594 A 19941222
- US 9516231 W 19951222
Abstract (en)
[origin: WO9619595A1] A highly corrosion-resistant, strongly paint-adherent conversion coating is formed on the surface of aluminiferous metal substrates by contacting such surfaces for 0.5 to 60 seconds with a sludging-free water-based surface treatment bath that has a pH of 1.5 to 4.0 and contains a zirconium compound, phosphoric acid compound, oxidizing agent, and a compound that is a source of hydrogen fluoride (in a quantity that produces a concentration of from 0.0001 to 0.2 g/L HF in the treatment bath). This contact is preferably followed by a water rinse and drying.
IPC 1-7
IPC 8 full level
C23C 22/00 (2006.01); C23C 22/07 (2006.01); C23C 22/10 (2006.01); C23C 22/34 (2006.01); C23C 22/36 (2006.01)
CPC (source: EP)
C23C 22/361 (2013.01)
Designated contracting state (EPC)
AT DE ES FR GB IT SE
DOCDB simple family (publication)
WO 9619595 A1 19960627; AR 000514 A1 19970710; AU 4469796 A 19960710; BR 9510243 A 19971104; CA 2208459 A1 19960627; EP 0799326 A1 19971008; EP 0799326 A4 19971210; JP 3349851 B2 20021125; JP H08176841 A 19960709; MX 9704518 A 19971031; TR 199501662 A2 19960721; ZA 9510615 B 19960703
DOCDB simple family (application)
US 9516231 W 19951222; AR 33464295 A 19951215; AU 4469796 A 19951222; BR 9510243 A 19951222; CA 2208459 A 19951222; EP 95943426 A 19951222; JP 32054594 A 19941222; MX 9704518 A 19951222; TR 9501662 A 19951222; ZA 9510615 A 19951213