DoITPoMS

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Questions

Quick questions

You should be able to answer these questions without too much difficulty after studying this TLP. If not, then you should go through it again!

  1. Which of these methods of characterisation would be helpful in identifying a ceramic?

    a Infra red spectroscopy
    b Differential Scanning Calorimetry
    c Energy Dispersive X-ray Spectroscopy
    d Scanning Electron Microscopy

Deeper questions

The following questions require some thought and reaching the answer may require you to think beyond the contents of this TLP.

  1. Match the material to the properties, try to think of reasons why the material may have been chosen.
    Material 1 has a shiny 'spangled' appearance due to large dendritic grains on the surface, it is a structural component within the article and must withstand relatively high stresses, and may experience wear in service, it must not corrode in warm air and is in a low cost article.

    a Tinned Steel
    b Stainless Steel
    c Aluminium
    d Galvanised Steel

  2. Match the material to the properties, try to think of reasons why the material may have been chosen.
    Material 2 is a brightly coloured, low-density component, it must be tough, rigid and non-toxic, the recycling mark is number 7.

    a Polyethylene (PE)
    b Acrylonitrile-butadiene-styrene (ABS)
    c Polyethylene terephthalate (PET)
    d Polytetrafluoroethylene (PTFE)

  3. Match the material to the properties, try to think of reasons why the material may have been chosen.
    Material 3 is an electrical component, it forms a contact that is subjected to a reasonable amount of wear, it must not corrode in air.

    a Low carbon steel
    b Copper
    c Brass: Copper/Zinc alloy
    d Stainless steel


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