Liquid Metal Corrosion of 316L Stainless Steel, 410 Stainless Steel, and 1015 Carbon Steel in a Molten Zinc Bath
Summary:
Corrosion tests of 1015 low-carbon steel and two stainless
steels (410 and 316L) were conducted in a pure zinc bath
(99.98 wt pct Zn) in order to better understand the reaction
mechanisms that occur during the degradation of submerged
hardware at industrial general (batch) galvanizing operations.
Through this testing, it was found that, in general, 316L
stainless steel showed the best dissolution resistance
among these three alloys, while 1015 carbon steel provided
a lower solubility than 410 stainless steel. Investigating
the failure mechanisms, both metallurgical
composition and lattice structure played important roles
in the molten metal corrosion behaviors of these alloys.
High contents of nickel combined with the influence of
chromium improved the resistance to molten zinc corrosion.
Moreover, a face-centered-cubic (fcc) structure was more
corrosion resistant than body-centered-cubic (bcc) possibly
due to the compactness of the atomic structure. Analogously,
the body-centered-tetragonal (bct) martensite lattice
structure possessed enhanced susceptibility to zinc corrosion
as a result of the greater
atomic spacing and high strain energy. Finally, an increased
bath temperature played an important role in molten metal
corrosion by accelerating the dissolution process and
changing the nature of intermetallic layers.
Format:
Pages : 10
Size: 770 kb
Author :JING XU, MARK A. BRIGHT, XINGBO LIU, and EVER
BARBERO
Download:Liquid Metal Corrosion of 316L Stainless Steel, 410 Stainless Steel, and 1015 Carbon Steel in a Molten Zinc Bath
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