Engineering Board Exam Reviewer · Engineering Materials · medium
Anodizing is a process used mainly to protect:
- Steel by coating it with zinc
- Aluminum by thickening its oxide layer
- Copper by coating it with tin
- Iron by carburizing
Answer
B. Aluminum by thickening its oxide layer
Solution
The anodic oxide can also be dyed for decoration.
More Engineering Materials questions
- Cracking caused by the combined action of tensile stress and a corrosive environment is called:
- Corrosion that occurs in narrow gaps such as under gaskets or bolt heads is called:
- Localized corrosion that forms small holes or cavities on a metal surface is called:
- In a steel–copper galvanic couple in seawater, which metal corrodes preferentially?
- When two dissimilar metals are in electrical contact in an electrolyte, the corrosion of the more active metal accelerates. This is called:
- In a longitudinally loaded composite with 60% fibers (Ef = 230 GPa) and 40% matrix (Em = 3.5 GPa), what percentage of the load is carried…
- A composite contains 60% by volume carbon fibers ( = 1.8 g/cm3) in epoxy ( = 1.2 g/cm3). What is its density?
- A unidirectional composite has 60% by volume carbon fibers (E = 230 GPa) in an epoxy matrix (E = 3.5 GPa). What is its transverse modulus…
- A unidirectional composite has 60% by volume carbon fibers (E = 230 GPa) in an epoxy matrix (E = 3.5 GPa). What is its longitudinal…
- In a fiber composite, the strength and stiffness are greatest when loaded: