The Role of the Corrosion Product in the Atmospheric Corrosion of Iron

1933 ◽  
Vol 64 (1) ◽  
pp. 31 ◽  
Author(s):  
W. H. J. Vernon
Keyword(s):  
Corrosion Product ◽  
Atmospheric Corrosion ◽  
Corrosion Of Iron

Role of previously formed corrosion product layers on sulfide-assisted corrosion of iron archaeological artefacts in soil

2017 ◽  
Vol 129 ◽  
pp. 169-178 ◽  
Author(s):  
C. Rémazeilles ◽  
D. Neff ◽  
J.A. Bourdoiseau ◽  
R. Sabot ◽  
M. Jeannin ◽  
...  
Keyword(s):  
Corrosion Product ◽  
Corrosion Of Iron

scholarly journals Effect of Oxide Scale Microstructure on Atmospheric Corrosion Behavior of Hot Rolled Steel Strip

Coatings ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 517
Author(s):  
Bin Sun ◽  
Lei Cheng ◽  
Chong-Yang Du ◽  
Jing-Ke Zhang ◽  
Yong-Quan He ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Oxide Scale ◽  
Corrosion Product ◽  
Corrosion Behavior ◽  
Corrosion Test ◽  
Atmospheric Corrosion ◽  
Corrosion Mechanism ◽  
Type I ◽  
Rust Layer ◽  
Hot Rolled

The atmospheric corrosion behavior of a hot-rolled strip with four types (I–IV) of oxide scale was investigated using the accelerated wet–dry cycle corrosion test. Corrosion resistance and porosity of oxide scale were studied by potentiometric polarization measurements. Characterization of samples after 80 cycles of the wet–dry corrosion test showed that scale comprised wüstite and magnetite had strongest corrosion resistance. Oxide scale composed of inner magnetite/iron (>70%) and an outer magnetite layer had the weakest corrosion resistance. The corrosion kinetics (weight gain) of each type of oxide scale followed an initial linear and then parabolic (at middle to late corrosion) relationship. This could be predicted by a simple kinetic model which showed good agreement with the experimental results. Analysis of the potentiometric polarization curves, obtained from oxide coated steel electrodes, revealed that the type I oxide scale had the highest porosity, and the corrosion mechanism resulted from the joint effects of electrochemical behavior and the porosity of the oxide scale. In the initial stage of corrosion, the corrosion product nucleated and an outer rust layer formed. As the thickness of outer rust layer increased, the corrosion product developed on the scale defects. An inner rust layer then formed in the localized pits as crack growth of the scale. This attacked the scale and expanded into the substrate during the later stage of corrosion. At this stage, the protective effect of the oxide scale was lost.

scholarly journals Role of molybdenum in corrosion of iron-based alloys in contact with hydrogen sulfide containing solution

2016 ◽  
Vol 68 (6) ◽  
pp. 595-603 ◽  
Author(s):  
G. Genchev ◽  
C. Bosch ◽  
E. Wanzenberg ◽  
A. Erbe
Keyword(s):  
Hydrogen Sulfide ◽  
Iron Based ◽  
Corrosion Of Iron

The Role of Carbon Dioxide in the Atmospheric Corrosion of Zinc: A Laboratory Study

1998 ◽  
Vol 145 (1) ◽  
pp. 39-44 ◽  
Author(s):  
T. Falk ◽  
J.‐E. Svensson ◽  
L.‐G. Johansson
Keyword(s):  
Carbon Dioxide ◽  
Laboratory Study ◽  
Atmospheric Corrosion

Physicochemical approaches to gold and silver work, an overview: Searching for technologies, tracing routes, attempting to preserve

2018 ◽  
Vol 4 (2) ◽  
Author(s):  
Maria F. Guerra
Keyword(s):  
Atmospheric Corrosion ◽  
Raw Materials ◽  
Precious Metals ◽  
Gold Alloys ◽  
Exchange Networks ◽  
Trade Routes ◽  
Physicochemical Methods ◽  
Corrosion Mechanisms ◽  
Challenging Question

Abstract Gold alloys and silver alloys have always been widely employed in the production of significant objects. With high reflectivity, precious metals are perceived as both materials and colours, and can be skilfully combined to produce metallic polychrome effects. Because their structure and composition contain information on their manufacture, use, disclaim and degradation, items in gold and in silver enclose major information on the technologies employed by past societies and on exchange networks. This information can be acquired using appropriate analytical protocols, established according to the nature of the query and the characteristics of the objects. By using physicochemical techniques, it is possible to identify the technologies, materials and tools used by the artisan and, in particular cases, to situate the sources of raw materials and the workshops producing the objects, as well as to follow the trade routes. The aim of this work is to outline major achievements in the study of goldwork and silverwork based on the different physicochemical methods that are available, and to refer the analytical difficulties that have to be faced when studying objects made from precious metals. Based on several examples, three topics are addressed. The first concerns the major role of the techniques of exam when describing shaping, decorating, assembling and finishing; the second considers the search for metallic polychrome effects in some cultural areas; and the third discusses the challenging question of fingerprinting. A fourth section is dedicated to a short reflection on the difficulties related to the identification of the atmospheric corrosion mechanisms of precious metals.

scholarly journals The role of Sn on the long-term atmospheric corrosion of binary Cu-Sn bronze alloys in architecture

2019 ◽  
Vol 149 ◽  
pp. 54-67 ◽  
Author(s):  
T. Chang ◽  
G. Herting ◽  
S. Goidanich ◽  
J.M. Sánchez Amaya ◽  
M.A. Arenas ◽  
...  
Keyword(s):  
Atmospheric Corrosion

Role of hydrogen peroxide in inhibition of corrosion of iron

1986 ◽  
Vol 21 (4) ◽  
pp. 221-224 ◽  
Author(s):  
J. E. O. Mayne ◽  
J. A. Burkill
Keyword(s):  
Hydrogen Peroxide ◽  
Corrosion Of Iron
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