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Questions and Answers
Rivet 'smoking' is an indication of what type of corrosion?
Rivet 'smoking' is an indication of what type of corrosion?
fretting
What material is particularly vulnerable to corrosive attack from salt solutions?
What material is particularly vulnerable to corrosive attack from salt solutions?
magnesium
What are the four basic requirements for the formation of corrosion in a material?
What are the four basic requirements for the formation of corrosion in a material?
In an electrochemical reaction, which part will be eaten away: anode or cathode?
In an electrochemical reaction, which part will be eaten away: anode or cathode?
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What is the basic unit of a chemical element made up of?
What is the basic unit of a chemical element made up of?
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What is the electrical charge carried by each of these atomic particles: proton, neutron, electron?
What is the electrical charge carried by each of these atomic particles: proton, neutron, electron?
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What is the corrosion that forms along the grain boundaries within an aluminum alloy called?
What is the corrosion that forms along the grain boundaries within an aluminum alloy called?
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What are the two general classifications of corrosion?
What are the two general classifications of corrosion?
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What film protects aluminum alloys from oxidation?
What film protects aluminum alloys from oxidation?
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What metal treatment is used to help prevent stress corrosion?
What metal treatment is used to help prevent stress corrosion?
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What may cause stress corrosion in a metal?
What may cause stress corrosion in a metal?
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What is an atom called if it has more electrons than protons?
What is an atom called if it has more electrons than protons?
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What mixture can be used to remove stubborn exhaust stains?
What mixture can be used to remove stubborn exhaust stains?
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What condition can result from the use of non-recommended cleaning compounds?
What condition can result from the use of non-recommended cleaning compounds?
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What are the two most common types of naphtha?
What are the two most common types of naphtha?
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What type of corrosion forms when a metal like aluminum is exposed to oxygen?
What type of corrosion forms when a metal like aluminum is exposed to oxygen?
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In what areas does metallic ion concentration cell corrosion form?
In what areas does metallic ion concentration cell corrosion form?
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What type of corrosion occurs when two dissimilar metals are joined and one corrodes?
What type of corrosion occurs when two dissimilar metals are joined and one corrodes?
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What is the function of the aluminum oxide film on the surface of an aluminum alloy?
What is the function of the aluminum oxide film on the surface of an aluminum alloy?
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What is the primary cause of intergranular corrosion in aluminum alloys?
What is the primary cause of intergranular corrosion in aluminum alloys?
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What is the purpose of shot-peening in metal treatment?
What is the purpose of shot-peening in metal treatment?
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What is the composition of the nucleus of an atom?
What is the composition of the nucleus of an atom?
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What is the classification of corrosion that occurs due to electrochemical reactions?
What is the classification of corrosion that occurs due to electrochemical reactions?
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What is the term for the corrosion that occurs along the grain boundaries within an aluminum alloy?
What is the term for the corrosion that occurs along the grain boundaries within an aluminum alloy?
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Which type of corrosion is caused by friction between two metal surfaces?
Which type of corrosion is caused by friction between two metal surfaces?
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What is the role of the cathode in an electrochemical reaction?
What is the role of the cathode in an electrochemical reaction?
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What is the purpose of a wash primer in preventing corrosion?
What is the purpose of a wash primer in preventing corrosion?
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What type of corrosion is most likely to occur when a metal is exposed to a salt solution?
What type of corrosion is most likely to occur when a metal is exposed to a salt solution?
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What type of stress can cause corrosion in a metal?
What type of stress can cause corrosion in a metal?
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What is the condition required for corrosion to occur in a material?
What is the condition required for corrosion to occur in a material?
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What is the term for an atom that has more electrons than protons?
What is the term for an atom that has more electrons than protons?
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What is the role of the electrolyte in the corrosion process?
What is the role of the electrolyte in the corrosion process?
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What type of corrosion occurs when a metal is exposed to oxygen?
What type of corrosion occurs when a metal is exposed to oxygen?
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What is the consequence of having an improper electrical contact between the anode and cathode?
What is the consequence of having an improper electrical contact between the anode and cathode?
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What is the term for the corrosion that occurs when a metal is in contact with a more noble metal?
What is the term for the corrosion that occurs when a metal is in contact with a more noble metal?
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What is the term for the corrosion that forms in open areas?
What is the term for the corrosion that forms in open areas?
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What type of corrosion occurs when two dissimilar metals are joined?
What type of corrosion occurs when two dissimilar metals are joined?
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What is the term for the mixture used to remove stubborn exhaust stains?
What is the term for the mixture used to remove stubborn exhaust stains?
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What is the term for the condition that can result from the use of non-recommended cleaning compounds?
What is the term for the condition that can result from the use of non-recommended cleaning compounds?
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What are the two most common types of naphtha?
What are the two most common types of naphtha?
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Study Notes
Corrosion Control
Types of Corrosion
- Rivet "smoking" is an indication of fretting corrosion.
- Filiform corrosion is usually caused by an improperly cured wash primer.
- Magnesium is particularly vulnerable to corrosive attack from salt solutions.
- Intergranular corrosion forms along the grain boundaries within an aluminum alloy.
- Galvanic corrosion occurs when two dissimilar metals are joined in a structure.
Corrosion Formation Requirements
- Presence of a metal that will corrode (anode).
- Presence of a dissimilar conductive metal (cathode) with less tendency to corrode.
- Presence of a conductive liquid electrolyte.
- Electrical contact between the anode and cathode (usually metal to metal contact).
Electrochemical Reactions
- In an electrochemical reaction, the anode is eaten away.
- The basic unit of a chemical element is the atom, made up of a nucleus containing protons and neutrons, surrounded by spinning electrons.
- Protons carry a positive electrical charge, neutrons carry no charge, and electrons carry a negative electrical charge.
Corrosion Prevention and Treatment
- Aluminum alloys are protected from oxidation by the formation of an aluminum oxide film on its surface.
- Delaying surface quenching during heat treatment can cause intergranular corrosion of aluminum alloys.
- Shot-peen metal treatment is used to help prevent stress corrosion.
- Stress corrosion may occur when the metal is subjected to tensile stress in the presence of a corrosive environment.
Cleaning and Chemicals
- Stubborn exhaust stains may be removed with a 1:2 mixture of varsol and kerosene.
- Use of non-recommended cleaning compounds can result in hydrogen embrittlement.
- Aliphatic and aromatic are the two most common types of naphtha.
Corrosion Types and Characteristics
- Oxidation corrosion forms when a metal like aluminum is exposed to a containing oxygen.
- Metallic ion concentration cell corrosion forms in open areas.
- Filiform corrosion is usually caused by an improperly cured wash primer.
Corrosion Control
Types of Corrosion
- Rivet "smoking" is an indication of fretting corrosion.
- Filiform corrosion is usually caused by an improperly cured wash primer.
- Magnesium is particularly vulnerable to corrosive attack from salt solutions.
- Intergranular corrosion forms along the grain boundaries within an aluminum alloy.
- Galvanic corrosion occurs when two dissimilar metals are joined in a structure.
Corrosion Formation Requirements
- Presence of a metal that will corrode (anode).
- Presence of a dissimilar conductive metal (cathode) with less tendency to corrode.
- Presence of a conductive liquid electrolyte.
- Electrical contact between the anode and cathode (usually metal to metal contact).
Electrochemical Reactions
- In an electrochemical reaction, the anode is eaten away.
- The basic unit of a chemical element is the atom, made up of a nucleus containing protons and neutrons, surrounded by spinning electrons.
- Protons carry a positive electrical charge, neutrons carry no charge, and electrons carry a negative electrical charge.
Corrosion Prevention and Treatment
- Aluminum alloys are protected from oxidation by the formation of an aluminum oxide film on its surface.
- Delaying surface quenching during heat treatment can cause intergranular corrosion of aluminum alloys.
- Shot-peen metal treatment is used to help prevent stress corrosion.
- Stress corrosion may occur when the metal is subjected to tensile stress in the presence of a corrosive environment.
Cleaning and Chemicals
- Stubborn exhaust stains may be removed with a 1:2 mixture of varsol and kerosene.
- Use of non-recommended cleaning compounds can result in hydrogen embrittlement.
- Aliphatic and aromatic are the two most common types of naphtha.
Corrosion Types and Characteristics
- Oxidation corrosion forms when a metal like aluminum is exposed to a containing oxygen.
- Metallic ion concentration cell corrosion forms in open areas.
- Filiform corrosion is usually caused by an improperly cured wash primer.
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Description
This quiz tests your knowledge of corrosion control, including types of corrosion and their causes. It covers fretting, wash primer, and filiform corrosion.
