UNIVERSITI TEKNIKAL MALAYSIA MELAKA

FAKULTI KEJURUTERAAN MEKANIKAL

BMCB 2423 – MATERIAL SCIENCETUTORIAL 8

METAL AND NON-METAL MATERIALS

Q1. Write a typical chemical reaction for the reduction of iron oxide (Fe2O3) by carbon monoxide to produce iron.

Q2. What are the four basic types of stainless steels?

Q3. What is the basic composition of ferritic stainless steels?

Q4. Why are ferritic stainless steels considered non–heat-treatable?

Q5. What are the four basic types of cast irons?

Q6. Define a thermoplastic plastic.

Q7. Define thermosetting plastics.

Q8. Define the following terms: chain polymerization, monomer, and polymer.

Q9. Define the glass transition temperature Tg for a thermoplastic?

Q10. Describe the injection-molding process for thermoplastics.

Q11. What are some advantages and disadvantages of the injection-molding process for molding thermoplastics?

Q12. Describe the extrusion process for processing thermoplastics.

Q13. Describe the blow molding and thermoforming processes for forming thermoplastics.

Q14. Define a ceramic material.

Q15. What are some properties common to most ceramic materials?

Q16. Distinguish between traditional and engineering ceramic materials and give examples of each.

Q17. Describe two methods for preparing ceramic raw materials for processing.

Q18. Describe the steps in the slip-casting process for ceramic products.

Q19. Define a composite material with respect to a materials system.

Q20. What are the three main types of synthetic fibers used to produce fiber-reinforced-plastic composite materials?

Q21. Derive an equation relating the elastic modulus of a layered composite of unidirectional fibers and a plastic matrix that is loaded under isostrain conditions.

Q22. Compare the tensile strength, tensile modulus of elasticity, elongation, and density properties of glass, carbon, and aramid fibers (Table 12.1 and Fig. 12.8).