Title:
【発明の名称】金属表面用の化成被覆剤
Document Type and Number:
Japanese Patent JPH09503823
Kind Code:
A
Abstract:
A conversion coating for aluminum, ferrous and magnesium alloyed materials includes zirconium, fluoride and calcium ions. The coating is preferably at a pH of between about 2.6 and about 3.1, and may optionally include phosphates, polyphosphates, tannin, boron, zinc and aluminum. A sequestering agent to complex dissolved iron, and a crystal deformation agent such as ATMP are also preferably included.
Inventors:
Charles Lee, Tomlinson
Application Number:
JP51207895A
Publication Date:
April 15, 1997
Filing Date:
October 14, 1994
Export Citation:
Assignee:
CIRCLE-PROSCO,INC.
International Classes:
F28F13/18; C23C22/34; C23C22/36; C23C22/48; (IPC1-7): C23C22/48; C23C22/34; F28F13/18
Attorney, Agent or Firm:
Kyozo Yuasa (6 people outside)