Corrosion Ap Essay Questions And Answers
.
REVISION QUESTIONS
Corrosion OP
- Monday
Is the electrical circuit in a corrosion reaction AC or DC?
1
Does corrosion occur at the cathode or at the anode?
2
Name the three factors needed for corrosion to occur.
3
What is meant by the term electrolyte?
4
What is corrosion?
5
In the corrosion circuit do electrons flow from anode to cathode?
6
Which gas is released at the cathode when the electrolyte is water?
7
Which is the more noble metal, steel or Aluminium?
8
Which is more electronegative, steel or Aluminium?
9
10 If steel and copper were in contact in an electrolyte which would corrode?
11 Name two common Hygroscopic salts.
12 Name three metals used as sacrificial anodes on a steel pipeline.
13 What is the …show more content…
15 Which other names relate to the Galvanic List?
16 In which environment are you likely to encounter chloride salts?
17 Which three compounds together form millscale?
18 If magnesium was coupled with zinc, which would corrode?
19 In which environment would sulphate salts be found?
20 What is an osmotic blister?
21 What is an ion?
22 What is meant by polaris~tion?
23 Is an anode positive or negative?
24 Can corrosion occur without an electrolyte?
25 Name a sub atomic particle.
26 What is millscale and when and where does it occur?
27 Name three factors, which can accelerate corrosion reactions.
28 Why is it considered essential to remove millscale prior to painting?
29 Why does an un-coated steel plate corrode?
30 If corrosion occurs at anodic areas, why does steel corrode evenly all over the surface?
Painting Inspection Grade 3,2. Rev I April 2004
Revision Questions
23.1
Copyright @ 2003, TWI Ltd …show more content…
Which British standard would be used in detennining the size of metallic abrasives?
Which regulations prohibit the use of sand for blasting steel?
What is meant by the tenn 'key'?
Why is it important to have good surface preparation?
What is meant by the tenn sliver?
What is a hackle?
Name two other tenns that could be used for 'anchor pattern'?
What are the main advantages of using 'Testex papers' for measuring profiles?
What is meant by the tenn grade. relating to a blast finish?
What are the main factors governing the grade of a blast finish?
Can the grade of a blast fmish be detennined by using the surface comparators to BS 7079
Pt C3?
What profile range can be measured using X coarse Testex?
What profile range can be measured using coarse grade Testex?
What are the two theories of adhesion?
Briefly describe the mechanisms of the two theories of adhesion.
How many microns are in 1thou?
Give three different names for the cross section of a blast.
What is the approximate speed of abrasives leaving a venturi nozzle?
What is the most common cause of flash rusting on a blasted substrate?
What would be considered to be an ideal shot grit
REVISION QUESTIONS
Corrosion OP
- Monday
Is the electrical circuit in a corrosion reaction AC or DC?
1
Does corrosion occur at the cathode or at the anode?
2
Name the three factors needed for corrosion to occur.
3
What is meant by the term electrolyte?
4
What is corrosion?
5
In the corrosion circuit do electrons flow from anode to cathode?
6
Which gas is released at the cathode when the electrolyte is water?
7
Which is the more noble metal, steel or Aluminium?
8
Which is more electronegative, steel or Aluminium?
9
10 If steel and copper were in contact in an electrolyte which would corrode?
11 Name two common Hygroscopic salts.
12 Name three metals used as sacrificial anodes on a steel pipeline.
13 What is the …show more content…
15 Which other names relate to the Galvanic List?
16 In which environment are you likely to encounter chloride salts?
17 Which three compounds together form millscale?
18 If magnesium was coupled with zinc, which would corrode?
19 In which environment would sulphate salts be found?
20 What is an osmotic blister?
21 What is an ion?
22 What is meant by polaris~tion?
23 Is an anode positive or negative?
24 Can corrosion occur without an electrolyte?
25 Name a sub atomic particle.
26 What is millscale and when and where does it occur?
27 Name three factors, which can accelerate corrosion reactions.
28 Why is it considered essential to remove millscale prior to painting?
29 Why does an un-coated steel plate corrode?
30 If corrosion occurs at anodic areas, why does steel corrode evenly all over the surface?
Painting Inspection Grade 3,2. Rev I April 2004
Revision Questions
23.1
Copyright @ 2003, TWI Ltd …show more content…
Which British standard would be used in detennining the size of metallic abrasives?
Which regulations prohibit the use of sand for blasting steel?
What is meant by the tenn 'key'?
Why is it important to have good surface preparation?
What is meant by the tenn sliver?
What is a hackle?
Name two other tenns that could be used for 'anchor pattern'?
What are the main advantages of using 'Testex papers' for measuring profiles?
What is meant by the tenn grade. relating to a blast finish?
What are the main factors governing the grade of a blast finish?
Can the grade of a blast fmish be detennined by using the surface comparators to BS 7079
Pt C3?
What profile range can be measured using X coarse Testex?
What profile range can be measured using coarse grade Testex?
What are the two theories of adhesion?
Briefly describe the mechanisms of the two theories of adhesion.
How many microns are in 1thou?
Give three different names for the cross section of a blast.
What is the approximate speed of abrasives leaving a venturi nozzle?
What is the most common cause of flash rusting on a blasted substrate?
What would be considered to be an ideal shot grit