鎂合金之非鉻酸鹽皮膜處理
Date Issued
2003
Date
2003
Author(s)
DOI
912216E002041
Abstract
This study investigated the non-chromate
conversion coating for magnesium alloys, and
compared and contrasted the microstructure,
formation mechanisms and corrosion
resistance of the various non-chromate
conversion coatings and chromate conversion
coatings. The permanganate coating exhibited
a porous structure and its adhesion to the
magnesium substrate was poor than that of
chromate conversion coating. Unlike the
chromate coating whose thickness had
reached a saturated value after 5 min. of
immersion, the thickness of the permanganate
coating continuously increased with the
immersion time. Solution temperature was
found to be the primary factor in determining
the growth rate of the permanganate coating
of which color markedly changed with the
immersion time. Finally, the magnesium alloy,
after proper permanganate conversion coating,
had a corrosion resistance similar to these
with chromate conversion coating, as
demonstrated in polarization curves.
Subjects
conversion coating treatment
magnesium alloys
chromate conversion coating
permanganate conversion
coating
coating
Publisher
臺北市：國立臺灣大學材料科學與工程學研究所
Type
report
File(s)![Thumbnail Image]()
Loading...
Name
912216E002041.pdf
Size
348.49 KB
Format
Adobe PDF
Checksum
(MD5):0aaf4f5ab68a63de7b8657b4a21a9778