Browse Prior Art Database

Corrosion-Resistant and Smut-Free Coating for Magnesium

IP.com Disclosure Number: IPCOM000105391D
Original Publication Date: 1993-Jul-01
Included in the Prior Art Database: 2005-Mar-19
Document File: 2 page(s) / 20K

Publishing Venue

IBM

Related People

Chen, HH: AUTHOR [+4]

Abstract

Disclosed is a coating method for protecting magnesium from corrosion in hot and humid environments. The coating is free of smut and flakes.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Corrosion-Resistant and Smut-Free Coating for Magnesium

      Disclosed is a coating method for protecting magnesium from
corrosion in hot and humid environments.  The coating is free of smut
and flakes.

      The method involves dipping magnesium parts initially in a
aqueous solution of sodium tetraborate (5 - 10%) at 50 - 70 degree C
for one minute.  The parts are then dipped in an aqueous solution of
ammonium bifluoride (5 - 20%) at 20 - 30 degree C for one minute.
Finally, the parts are dipped in sodium dichromate (10 - 20%) aqueous
solution saturated with magnesium fluoride at 90 - 100 degree C for 5
- 10 minutes followed by rinsing with deionized water.