Title:
【発明の名称】金属基材の上に6価クロムに基づく保護被覆を施すに適した方法,それに用いる溶液、溶液成分の市販型形態
Document Type and Number:
Japanese Patent JPH07116614
Kind Code:
B2
Abstract:
Appropriate process for imparting to a metal substrate a coating protecting against corrosion, based on hexavalent chromium, not requiring recourse to any additional protective layer, and which comprises:
- a stage of preparation of the metal substrate by degreasing, optionally followed by scouring or pickling,
- a stage of treatment by dipping, spraying or with a roller by means of an appropriate bath for imparting the required protective coating to the metal substrate and
- a stage of baking at high temperature, is characterised in that the abovementioned bath comprises at least:
- a metal in particulate form,
- chromic acid and/or one of its derivatives as oxidising agent,
- at least one water-soluble solvent of high boiling point, chosen from those of aprotic polar type and of ketonic type,
- water.
More Like This:
Inventors:
Joseph Shapira
Patrick Doroniu
Patrice Pelletier
Daniel Bernard
Patrick Doroniu
Patrice Pelletier
Daniel Bernard
Application Number:
JP29909990A
Publication Date:
December 13, 1995
Filing Date:
November 06, 1990
Export Citation:
Assignee:
Company Française de Produy Andustriere
International Classes:
C23C22/26; C23C22/24; C23C22/74; (IPC1-7): C23C22/26
Attorney, Agent or Firm:
Wakabayashi Tadashi
Previous Patent: Image processing device and image processing method
Next Patent: CLEANING UNIT AND APPARATUS
Next Patent: CLEANING UNIT AND APPARATUS