Title:
【発明の名称】亜鉛又は亜鉛合金の表面に化成被膜を形成する方法及びこの方法の利用方法
Document Type and Number:
Japanese Patent JP3083872
Kind Code:
B2
Abstract:
In a process for producing conversion coatings on zinc or zinc alloy surfaces, in which the surfaces are contacted in a first stage with a solution which contains at least two different polyvalent metal ions and such a quantity of complexing agent that the polyvalent metal ions are held in solution, and has a pH of >/= 11, rinsing is carried out in a subsequent stage with a rinsing solution which contains aluminium, zirconium and fluoride and has been adjusted to a pH of
Inventors:
Thomas Kollberg
Berner Rausch
Peter Shubuff
Thomas Bender
Berner Rausch
Peter Shubuff
Thomas Bender
Application Number:
JP15248291A
Publication Date:
September 04, 2000
Filing Date:
May 28, 1991
Export Citation:
Assignee:
Metal Gezel Shaft / Actien Gezel Shaft
International Classes:
C23C22/50; C23C22/60; C23C22/83; C23G1/10; (IPC1-7): C23C22/83; C23C22/50; C23C22/60; C23G1/10
Domestic Patent References:
| JP361385A | ||||
| JP4231480A |
Attorney, Agent or Firm:
Masaru Tsuchiya