第三章

Chapter 3 Corrosion and Protection of Metallic Materials

1.?單選(2分)

?The majority of metal has a tendency to change into ______ gradually, except several noble metals, due to the exposure to the environment.

?A. metallic compounds

B. metal oxides

C. alloy

D. grey color

2.?單選(2分)

?Among various types of corrosions, _______corrosion is the most common one.?

?A. chemical

B. physical

C. electrochemical

D. biological

3.?單選(2分)

?Al foils could keep shining, instead of corrosion. It’s because of____, which forms a very thin layer of oxidized film to inhibit Al for further corrosion.

?A. passivation

B. corrosion

C. thermal stability

D. activation

4.?單選(2分)

?Based on the inserted table of standard electrode potentials of metals, it could be inferred that ______ shows higher tendency to be corroded in aqueous solution at 25°C.?

?A. Nickel

B. Tin

C. Zinc

D. Iron

5.?多選(3分)

?In order to reduce the loss from corrosion, we could use the following methods: ______.?

A. application of coatings

B. suitable design

C. appropriate materials selection

D. electrochemical protection

6.?判斷(2分)

?The standard electrode potential of different metals in an aqueous solution could approximately show their thermodynamic stability.

正確

7.?判斷(2分)

?The cathodic reaction is probably oxygen reduction reaction (ORR) when steel is corroded in an acid aqueous solution

錯(cuò)誤