Foundations of Materials Science and Engineering
6th Edition
ISBN: 9781259696558
Author: SMITH
Publisher: MCG
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Chapter 13.10, Problem 53AAP
To determine
The corrosion rate in the unit of
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A 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?
For 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 copper
For the alloy of Brass and Titanium that are coupled in seawater, predict the possibility of corrosion; if corrosion is
probable, note which metal/alloy will corrode.
Answer:
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_forwardCurrent 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 yrarrow_forwardTwo uncoated copper plates are joined together using a bolt made of the same composition as the plates. The fastened design creates an overlap section. Suggest one possible risk of corrosion for this design and propose a solution.arrow_forward
- Why do we analyse the rate of corrosion?arrow_forwardQuestion 3: : Estimate the corrosion rate (g/cm².s), penetration rate (mm/yr), and Ecorr (V) for a zinc tank containing oxygen free solution (pH =0). Assume the anodic reaction is under activation control and cathodic reactions is under activation and concentration control with the limiting current density for hy- drogen reduction on Zn is 5×10-5 A/cm?. [Zn**] = 1M at 298 K. The atomic weight of zinc is 65.4 g/mol. Density of zinc is 7.13 g/cm³. io, Zn = 1×10-7 A/cm², ßa= 0.09 V/decade io, H= 1×10-10 A/cm?, Bc= -0.08 V/decade icorr = 1.2×10-4 A/cm2arrow_forwardDiscuss intergranular corrosion and give examples for each type.arrow_forward
- What are factors affecting electrochemical corrosion rate? Discussarrow_forwardA 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 centimetersarrow_forwardExplain about the Erossion Corrosion in terms of :- -Factors influence -Mechanism -Affects(Surface of films, Effect of pH, Velocity Effects). -Preventions -Prone areas Summarized all the information by using MIND MAP.arrow_forward
- (b) Figure 1 shows a schematic diagram of the corrosion mechanism which involved steel structure. air Na 0, Na OH он shield FelOH), H' H Fe e passive film steel Figure 1: Corrosion mechanism (i) Identify the type of corrosion according to the schematic diagram shown in Figure 1. Justify your answer by explaining the corrosion mechanism. (ii) Suggest the methods to prevent the corrosion shown in Figure 1.arrow_forwardIdentify two metals that do not corrode easily in the presence of oxygen and water. Explain why theydo not corrode. How are these metals useful? How do the uses of these metals depend on their resistance to corrosion?arrow_forwardDiscussion: 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.arrow_forward
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