1. For each application below, determine if the particular choice of metal is ap
ID: 1042273 • Letter: 1
Question
1. For each application below, determine if the particular choice of metal is appropriate or inappropriate, and explain your answer. If the metal is not suitable for the application, suggest a better choice. (a) The block of an internal combustion engine is made of magnesium alloy. (b) A showerhead is made of carbon steel. (c) Jet engine turbofan blades are made of zinc alloy. (d) Eyeglass frames are made of titanium. (e) An incandescent light bulb filament is made of aluminum. (f) Dental fillings are made of magnesium. (g) Computer chip interconnects conduct electricity through aluminum wires.Explanation / Answer
a)
Gray cast iron is used to make an engine block because it is relatively easy to cast, is wear resistant, has good vibration damping characteristics, and is relatively inexpensive.
b)
True
c)
Titanium alloys is used for high-speed aircraft jet engine turbofan blades because they are lightweight, strong, and easily fabricated very resistant to corrosion.
d)
True
e)
An incadescent bulb contains a filament of tungsten.
f)
Dental fillings are often made of gold or porcelain because they are nonreactive .They don't corrode or rust and are resistible to staining. Thus having low thermal conductibility.
g)
computer chip interconnects conduxct electricity through copper wires.
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