Corrosion Resistance of Bimetals with Cladding Stainless Steel Layers in Nearly Neutral Aqueous Media
I. I. Reformatskayaa, A. N. Podobaeva, I. I. Ashcheulovaa, I. G. Rodionovab, A. A. Pavlovb, A. N. Rybkinb, and O. N. Baklanovab
aFGUP GNTs RF Karpov Research Institute of Physical Chemistry, ul. Vorontsovo pole 10, Moscow, 103064 Russia
bFGUP Bardin Central Research Institute of Ferrous Metallurgy, Vtoraya Baumanskaya ul. 9/23, Moscow, 107005 Russia
Received May 5, 2005
Abstract — In neutral aqueous media containing 0.4 g/l [Cl
], steel 04
14
2
, in the form of mono- or bimetal with a weld, retains its steady passive state unlike steel 08
13.This is due to stabilizing the ferrite phase by silicon and the absent tendency to the grain growth and precipitation of chromium carbides when heated below 1025°C because of modifying with niobium. In aqueous media close to neutral which contain ~10 g/l [Cl–], the cladding layer of 
18
10
steel, in contrast to the massive metal of the same composition, is insusceptible to pitting because of the absence of manganese sulfide in its structure due to its low sulfur content insufficient for the manganese sulfide concentration in the metal to reach the solubility product.
], steel 04142, in the form of mono- or bimetal with a weld, retains its steady passive state unlike steel 0813.This is due to stabilizing the ferrite phase by silicon and the absent tendency to the grain growth and precipitation of chromium carbides when heated below 1025°C because of modifying with niobium. In aqueous media close to neutral which contain ~10 g/l [Cl–], the cladding layer of 1810 steel, in contrast to the massive metal of the same composition, is insusceptible to pitting because of the absence of manganese sulfide in its structure due to its low sulfur content insufficient for the manganese sulfide concentration in the metal to reach the solubility product.
PACS numbers: 82.45.Bb, 81.65.Kn, 89.60.Ec
DOI: 10.1134/S0033173206060014