Unformatted text preview: Besides changing the crystal structure to FCC, the Ni improves the corrosion resistance further. Justify the improved corrosion resistance on the basis of the standard emf series. 3. Compare the merits of using tin and zinc as a protective coating on steel for: (a) food cans and (b) outdoor fencing. 4. (a) List the thermoplastics in Table 17.4 that would be suitable for making gasoline tanks. Take gasoline to be octane, C 8 H 10 . (b) Adding the additional constraint that the tanks must be impact resistant down to -20°C, which of the polymer(s) would be suitable? Justify your choice(s) using the glass transition temperature as an approximate measure of the temperature of transition between ductile (tough) and brittle behavior. 5. Briefly explain why silicone rubber has such high resistance to weathering, sunlight, oxidation and ozone compared to most other elastomers. Base your explanation on molecular structure differences....
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- Spring '08
- Stainless steel, Stainless Steels