Podcast Beta
Questions and Answers
Rivet 'smoking' is an indication of what type of corrosion?
fretting
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?
In an electrochemical reaction, which part will be eaten away: anode or cathode?
Signup and view all the answers
What is the basic unit of a chemical element made up of?
Signup and view all the answers
What is the electrical charge carried by each of these atomic particles: proton, neutron, electron?
Signup and view all the answers
What is the corrosion that forms along the grain boundaries within an aluminum alloy called?
Signup and view all the answers
What are the two general classifications of corrosion?
Signup and view all the answers
What film protects aluminum alloys from oxidation?
Signup and view all the answers
What metal treatment is used to help prevent stress corrosion?
Signup and view all the answers
What may cause stress corrosion in a metal?
Signup and view all the answers
What is an atom called if it has more electrons than protons?
Signup and view all the answers
What mixture can be used to remove stubborn exhaust stains?
Signup and view all the answers
What condition can result from the use of non-recommended cleaning compounds?
Signup and view all the answers
What are the two most common types of naphtha?
Signup and view all the answers
What type of corrosion forms when a metal like aluminum is exposed to oxygen?
Signup and view all the answers
In what areas does metallic ion concentration cell corrosion form?
Signup and view all the answers
What type of corrosion occurs when two dissimilar metals are joined and one corrodes?
Signup and view all the answers
What is the function of the aluminum oxide film on the surface of an aluminum alloy?
Signup and view all the answers
What is the primary cause of intergranular corrosion in aluminum alloys?
Signup and view all the answers
What is the purpose of shot-peening in metal treatment?
Signup and view all the answers
What is the composition of the nucleus of an atom?
Signup and view all the answers
What is the classification of corrosion that occurs due to electrochemical reactions?
Signup and view all the answers
What is the term for the corrosion that occurs along the grain boundaries within an aluminum alloy?
Signup and view all the answers
Which type of corrosion is caused by friction between two metal surfaces?
Signup and view all the answers
What is the role of the cathode in an electrochemical reaction?
Signup and view all the answers
What is the purpose of a wash primer in preventing corrosion?
Signup and view all the answers
What type of corrosion is most likely to occur when a metal is exposed to a salt solution?
Signup and view all the answers
What type of stress can cause corrosion in a metal?
Signup and view all the answers
What is the condition required for corrosion to occur in a material?
Signup and view all the answers
What is the term for an atom that has more electrons than protons?
Signup and view all the answers
What is the role of the electrolyte in the corrosion process?
Signup and view all the answers
What type of corrosion occurs when a metal is exposed to oxygen?
Signup and view all the answers
What is the consequence of having an improper electrical contact between the anode and cathode?
Signup and view all the answers
What is the term for the corrosion that occurs when a metal is in contact with a more noble metal?
Signup and view all the answers
What is the term for the corrosion that forms in open areas?
Signup and view all the answers
What type of corrosion occurs when two dissimilar metals are joined?
Signup and view all the answers
What is the term for the mixture used to remove stubborn exhaust stains?
Signup and view all the answers
What is the term for the condition that can result from the use of non-recommended cleaning compounds?
Signup and view all the answers
What are the two most common types of naphtha?
Signup and view all the answers
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.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz tests your knowledge of corrosion control, including types of corrosion and their causes. It covers fretting, wash primer, and filiform corrosion.
