12. Identify at least one problem associated with usingcarburizing environment while sintering the plain carbon steelsprockets.
13. Identify at least one problem associated with using oxidizingenvironment while sintering plain carbon steel gears?
14. Search literature and identify at least one application ofpowder metallurgy to manufacture tools using compositematerials.
15. Metallic sheets can be manufactured through rolling processusing either plate or metallic powder as starting material;identify one drawback and one comparative advantage in eachcase.
