Task 1
Material engineers should be conversant of various materials, their properties, manufacturing process involved, environmental issues, monetary issues and more.
Your Task
1. Which chromium plating is more eco-friendly - trivalent or Hexavalent? Justify your answer in the light of environmental issues caused.
2. Explain why tempering cycle is essentially required in the heat treatment of high tensile carbon steel and what are the consequences if tempering cycle is not carried out?
3. What are the essential criteria for selecting materials required for the following operating functions?
(a) Turbine blades which endures vibrations and saline conditions
(b) Domestic utensils used in kitchen
(c) Aircraft body to go undetected in radars
(d) Dental braces used in medical field
(e) Rocket Chambers of space shuttles.