Foundations of Materials Science and Engineering
6th Edition
ISBN: 9781259696558
Author: SMITH
Publisher: MCG
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Chapter 13.10, Problem 71AAP
To determine
The average current produced by the corrosion process.
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A piece of iron was placed in a bowl of liquid and left for a day. It was found that the iron piece lost a weight of 0.25 g. Calculate the corrosion rate (mm / y) using the value of 87.6 = K and the surface area exposed to corrosion is 20 * square centimeters
Discussion:
1- Define the corrosion and mention its types?
2- What is the effect of solution aeration on corrosion rate?
3- Compare corrosion rate for a metallic sample immersed in acidic
solution with that immersed in a salt solution.
4- What is the effect of the exposure period on the corrosion rate?
5- Discuss the relationship between weight loss and time.
Current Attempt in Progress
X Incorrect.
A piece of corroded steel plate was found in a submerged ocean vessel. It was estimated that the original area of the plate was 16 in.²
and that approximately 2.9 kg had corroded away during the submersion. Assuming a corrosion penetration rate of 200 mpy for this
alloy in seawater, estimate the time of submersion in years. The density of steel is 7.9 g/cm³.
i
0.72
yr
Chapter 13 Solutions
Foundations of Materials Science and Engineering
Ch. 13.10 - Prob. 1KCPCh. 13.10 - Prob. 2KCPCh. 13.10 - Which is in a lower energy state: (a) elemental...Ch. 13.10 - Give several examples of environmental...Ch. 13.10 - Prob. 5KCPCh. 13.10 - Prob. 6KCPCh. 13.10 - Prob. 7KCPCh. 13.10 - What is an exchange current density? What is the...Ch. 13.10 - Prob. 9KCPCh. 13.10 - Prob. 10KCP
Ch. 13.10 - Prob. 11KCPCh. 13.10 - Prob. 12KCPCh. 13.10 - Prob. 13KCPCh. 13.10 - Prob. 14KCPCh. 13.10 - Prob. 15KCPCh. 13.10 - Prob. 16KCPCh. 13.10 - Prob. 17KCPCh. 13.10 - Prob. 18KCPCh. 13.10 - Prob. 19KCPCh. 13.10 - Describe fretting corrosion.Ch. 13.10 - What is selective leaching of an alloy? Which...Ch. 13.10 - Prob. 22KCPCh. 13.10 - Prob. 23KCPCh. 13.10 - Prob. 24KCPCh. 13.10 - Prob. 25KCPCh. 13.10 - Prob. 26KCPCh. 13.10 - Prob. 27KCPCh. 13.10 - What are Alclad alloys?Ch. 13.10 - Prob. 29AAPCh. 13.10 - Prob. 30AAPCh. 13.10 - Prob. 31AAPCh. 13.10 - Prob. 32AAPCh. 13.10 - Prob. 33AAPCh. 13.10 - The emf of a standard Ni-Cd galvanic cell is...Ch. 13.10 - What is the emf with respect to the standard...Ch. 13.10 - Prob. 36AAPCh. 13.10 - Prob. 37AAPCh. 13.10 - Prob. 38AAPCh. 13.10 - Prob. 39AAPCh. 13.10 - Prob. 40AAPCh. 13.10 - Prob. 41AAPCh. 13.10 - Prob. 42AAPCh. 13.10 - Prob. 43AAPCh. 13.10 - Prob. 44AAPCh. 13.10 - Prob. 45AAPCh. 13.10 - Prob. 46AAPCh. 13.10 - Prob. 47AAPCh. 13.10 - Prob. 48AAPCh. 13.10 - Prob. 49AAPCh. 13.10 - Prob. 50AAPCh. 13.10 - Prob. 51AAPCh. 13.10 - Prob. 52AAPCh. 13.10 - Prob. 53AAPCh. 13.10 - Prob. 54AAPCh. 13.10 - A galvanized (zinc-coaled) steel sheet is found to...Ch. 13.10 - Prob. 56AAPCh. 13.10 - Prob. 57AAPCh. 13.10 - Prob. 58AAPCh. 13.10 - Prob. 59AAPCh. 13.10 - Prob. 60AAPCh. 13.10 - Prob. 61AAPCh. 13.10 - Prob. 62AAPCh. 13.10 - Prob. 63AAPCh. 13.10 - Prob. 64AAPCh. 13.10 - Prob. 65AAPCh. 13.10 - Prob. 66AAPCh. 13.10 - Prob. 67AAPCh. 13.10 - Prob. 68AAPCh. 13.10 - Prob. 69AAPCh. 13.10 - Prob. 70AAPCh. 13.10 - Prob. 71AAPCh. 13.10 - Prob. 72AAPCh. 13.10 - Prob. 73AAPCh. 13.10 - Prob. 74AAPCh. 13.10 - Prob. 75AAPCh. 13.10 - Prob. 76SEPCh. 13.10 - Prob. 77SEPCh. 13.10 - Prob. 78SEPCh. 13.10 - Prob. 79SEPCh. 13.10 - Prob. 80SEPCh. 13.10 - Prob. 81SEPCh. 13.10 - Prob. 82SEPCh. 13.10 - Prob. 83SEPCh. 13.10 - Prob. 84SEPCh. 13.10 - Corrosion is observed at the root of threads on...Ch. 13.10 - Prob. 86SEPCh. 13.10 - Prob. 87SEPCh. 13.10 - Prob. 88SEPCh. 13.10 - Prob. 89SEPCh. 13.10 - Prob. 90SEPCh. 13.10 - Prob. 91SEPCh. 13.10 - Prob. 92SEPCh. 13.10 - Prob. 93SEPCh. 13.10 - Prob. 94SEPCh. 13.10 - Prob. 95SEPCh. 13.10 - Prob. 96SEPCh. 13.10 - Prob. 97SEPCh. 13.10 - Prob. 98SEP
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- 1. (A) The heat treatment of a material (lets say "steel") will affect it corrosion performance? why/why not?. (B) A pice of Zn metal is exposed to three different environments as shown below. Which case will have the highest corrosion rate and why? 山山山 Zn Zn Zn HCL HCL + Oxygen HCL Onygen Fe (C) Ddifference betweenActive and passive material/metals?arrow_forwardESSAY: Question: What types of corrosion is the most destructive and insidious forms of corrosion?arrow_forwardIn preventing corrosion of iron, a stronger reducing agent called sacrificial anode such as zinc is used to coat iron. Select one: True Falsearrow_forward
- Q3/ A: Answer the following: 1- when does fretting corrosion occur? 2- when does stress corrosion occur? 3-Explain effect of distance on the galvanic corrosion? 4- State the cause of the selective corrosion? 5- What Does Transpassivation mean?arrow_forwardState the two types of corrosion and briefly explain them.arrow_forwardA corrosion cell is composed of a 20 cm² copper sheet and a 400 cm² iron sheet, with a current density of 0.7 A/cm² applied to the copper. Which material is the anode? What is the rate of loss of metal from the anode per hour?arrow_forward
- Fill in the table below? Which corrosion are seen in the figures? Briefly explain causes and preventations of these corrosions.arrow_forwardWhat are the factors that influence on corrosion behavior?arrow_forwardWhat are the most effective corrosion control methods used in mechanical engineering applications, and how do they prevent or mitigate corrosion?arrow_forward
- In galvanic corrosion, Select one: a. The combination of a large anode and small cathode is the potential dangerous and should be avoided. Ob. The further apart of the metals in the galvanic series, the greater is the severity of the corrosion attack O c. Installation of third metal that is anodic to two metals in a system worsens the galvanic corrosion. d. The rate of attack increases markedly at greater distances from the interface of the two metals.arrow_forwardPitting attack is decreased by an increase of velocity of corroding fluid. Explain why ? * Your answer Oxygen is a prerequisite for crevice corrosion to occur. Give the reason ?arrow_forwardFor the following pairs of alloys that are coupled in seawater, predict the possibility of corrosion; if corrosion is probable, note which metal/alloy will corrode. (a) Aluminum and cast iron (b) Inconel and nickel (c) Cadmium and zinc (d) Brass and titanium (e) Low-carbon steel and copperarrow_forward
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