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Book Chapter

Basic Concepts Important to Corrosion

Available to Purchase

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910021
EISBN: 978-1-62708-250-1
... Abstract This chapter addresses the basic concepts important to understanding corrosion of metals. It begins with an overview of the three types of behaviors that a metal exhibits when immersed in an environment and of the four requirements of a corrosion cell. The chapter then covers...
Abstract
This chapter addresses the basic concepts important to understanding corrosion of metals. It begins with an overview of the three types of behaviors that a metal exhibits when immersed in an environment and of the four requirements of a corrosion cell. The chapter then covers the important characteristics of metals with respect to corrosion, namely the metallurgical characteristics, the inherent tendency to corrode, and the tendency to form insoluble corrosion products. The important characteristics of aqueous solutions with respect to corrosion are then addressed. The characteristics include: conductivity of the solution, acidity and alkalinity, oxidizing power, degree of ionization, and solubility in the solution. These characteristics, in combination with the characteristics of the metal, will determine the corrosion behavior of a metal/environment combination. The chapter concludes with a section on the determination of corrosion rates and corrosion rate allowances.
View PDF for content titled, Basic Concepts <span class="search-highlight">Important</span> to Corrosion
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Schematic of stress-corrosion crack showing important transport and corrosi...

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in Corrosion > Elements of Metallurgy and Engineering Alloys
Published: 01 June 2008
Fig. 18.16 Schematic of stress-corrosion crack showing important transport and corrosion reactions. A − represents negatively charged anions migrating to the crack tip, M w + represents metal ions entering the crack solution from the crack walls, and M T + indicates metal ions entering More
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Schematic of the wave soldering process. The three important process contro...

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in Brazing and Soldering > Joining: Understanding the Basics
Published: 01 November 2011
Fig. 7.13 Schematic of the wave soldering process. The three important process control regions are: (A) entry, (B) interior, and (C) peel-back region. The v is velocity of printed circuit board. Source: Ref 7.12 More
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Hexagonal crystal structure showing important planes for possible deformati...

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in Physical Metallurgy of Beryllium > Beryllium Chemistry and Processing
Published: 01 July 2009
Fig. 13.2 Hexagonal crystal structure showing important planes for possible deformation. Source: Aldinger 1979 More
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Correlation of process-dependent density and important properties. Source: ...

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in Sintering and Corrosion Resistance > Powder Metallurgy Stainless Steels: Processing, Microstructures, and Properties
Published: 01 June 2007
Fig. 5.3 Correlation of process-dependent density and important properties. Source: Ref 3 More
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Example of “maverick” joint. The load-carrying fillet weld is an important ...

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in Factors Influencing Weldment Fatigue[1] > Weld Integrity and Performance
Published: 01 July 1997
Fig. 11 Example of “maverick” joint. The load-carrying fillet weld is an important case. Failure may occur at either the weld toe or weld root. Applied axial stresses favor root failures. Applied bending stresses favor toe failures. The size of IJP controls the notch severity ( K f ) of both More
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Historically important microstructure and macrostructure. (a) The pearlite ...

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in Introduction—An Overview of Microstructure in Materials > Thermodynamics of Microstructures
Published: 01 December 2008
Fig. 1.6 Historically important microstructure and macrostructure. (a) The pearlite structure of carbon steel (microscope image of Sorby’s sample owned by the University of Sheffield, 500×) (b) The Widmanstätten structure of iron-nickel meteoric iron (the section was polished and etched More
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Relationship between important subsystems of a deformation system. Source: ...

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in Failure in Steel Forging > Failure Analysis of Heat Treated Steel Components
Published: 01 September 2008
Fig. 1 Relationship between important subsystems of a deformation system. Source: Ref 5 More
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General reactivity of the important elements in steels

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in Control of Grain Size by Heat Treatment and Forging > Steel Metallurgy for the Non-Metallurgist
Published: 01 November 2007
Fig. 8.8 General reactivity of the important elements in steels More
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The important regions on the 1100 °C (2010 °F) isothermal section of Fig. ...

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in Stainless Steels > Steel Metallurgy for the Non-Metallurgist
Published: 01 November 2007
Fig. 13.11 The important regions on the 1100 °C (2010 °F) isothermal section of Fig. 13.10 More
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Important directions in cubic cell

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in Crystallographic Planes and Directions > Elements of Metallurgy and Engineering Alloys
Published: 01 June 2008
Fig. C.4 Important directions in cubic cell More
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Important parameters in shearing [ Duvari et al., 2003 ]

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in Billet Separation and Shearing > Cold and Hot Forging: Fundamentals and Applications
Published: 01 February 2005
Fig. 13.5 Important parameters in shearing [ Duvari et al., 2003 ] More
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Product attributes important to the materials and alloy/temper selection pr...

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in Product, Alloy, and Temper Selection > Aluminum: Technology, Industry, and Applications
Published: 30 June 2023
Fig. 9.1 Product attributes important to the materials and alloy/temper selection process More
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The most important types of metal lattice structures [ Wie 86 ]

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in Metallurgical Principles[1] > Extrusion
Published: 01 December 2006
Fig. 4.4 The most important types of metal lattice structures [ Wie 86 ] More
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Some important process parameters of incremental sheet forming. Source: Re...

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in Incremental Sheet Forming > Sheet Metal Forming: Processes and Applications
Published: 01 August 2012
Fig. 13.9 Some important process parameters of incremental sheet forming. Source: Ref 13.7 More
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Important directions in a cubic cell. Source: Ref A.1

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in Review of Metallic Structure > Phase Diagrams: Understanding the Basics
Published: 01 March 2012
Fig. A.24 Important directions in a cubic cell. Source: Ref A.1 More
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Four important machining processes

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in Machining > Metals Fabrication: Understanding the Basics
Published: 01 November 2013
Fig. 1 Four important machining processes More
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Specific strength and modulus of some commercially important fibers. Source...

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in Fibers and Reinforcements > Structural Composite Materials
Published: 01 November 2010
Fig. 2.1 Specific strength and modulus of some commercially important fibers. Source: Ref 1 More
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Some important geometric configurations in hemming. (a) Straight-flat. (b) ...

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in Bending, Flanging, and Hemming > Sheet Metal Forming: Processes and Applications
Published: 01 August 2012
Fig. 2.42 Some important geometric configurations in hemming. (a) Straight-flat. (b) Straight-curved. (c) Convex-flat. (d) Concave-flat More
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Schematic of stress-corrosion crack showing important transport and corrosi...

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in Environmentally-Induced Failures > Fatigue and Fracture: Understanding the Basics
Published: 01 November 2012
Fig. 16 Schematic of stress-corrosion crack showing important transport and corrosion reactions. A– represents negatively charged anions migrating to the crack tip; M w + represents metal ions entering the crack solution from the crack walls; and M T + indicates metal ions entering More