TAFE NSW -Technical and Further Education Commission ENMAT101A Engineering Materials and Processes Associate Degree of Applied Engineering (Renewable Energy Technologies) Lecture 21 – Ceramics

TAFE NSW -Technical and Further Education Commission Ceramics EMMAT101A Engineering Materials and Processes Reference TextSection Higgins RA & Bolton, Materials for Engineers and Technicians, 5th ed, Butterworth Heinemann Ch 21 Reference TextSection Callister, W. Jr. and Rethwisch, D., 2110, Materials Science and Engineering: An Introduction, 8th Ed, Wiley, New York. Ch 3 (part)

TAFE NSW -Technical and Further Education Commission Ceramics (Higgins 21) EMMAT101A Engineering Materials and Processes Domestic ceramics, e.g. china, earthenware, stoneware and cement. Natural ceramics, e.g. stone. Engineering ceramics, e.g. alumina, zirconia, boron nitride, etc. widely used in engineering as furnace components, tool tips and grinding tools. Glasses and glass ceramics. Glasses are non-crystalline (amorphous) i.e. they are virtually still in a liquid condition. Glass comprises a range of substances, from boiled sweets to window panes and beer mugs. Glass ceramics are fine-grained polycrystalline materials produced by the controlled crystallisation of glasses. Electronic materials, e.g. semiconductors and ferrites. Higgins

TAFE NSW -Technical and Further Education Commission 21.2 Silicate-based ceramics (Higgins 21.2) EMMAT101A Engineering Materials and Processes Higgins

TAFE NSW -Technical and Further Education Commission 21.2 Silicate-based ceramics (Higgins 21.2) EMMAT101A Engineering Materials and Processes 'Chain' type arrangements Higgins

TAFE NSW -Technical and Further Education Commission 21.2 Silicate-based ceramics (Higgins 21.2) EMMAT101A Engineering Materials and Processes ‘Sheet' type arrangements Higgins

TAFE NSW -Technical and Further Education Commission 21.2 Silicate-based ceramics (Higgins 21.2) EMMAT101A Engineering Materials and Processes ‘Sheet' type arrangements Higgins

TAFE NSW -Technical and Further Education Commission 21.3 Asbestos (Higgins 21.3) EMMAT101A Engineering Materials and Processes Asbestos as a health hazard Obsolete products containing asbestos Raw asbestos fibres Asbestos textiles Asbestos paper Asbestos-cement products Asbestos reinforced and filled plastics materials Precautions on encountering asbestos Higgins

TAFE NSW -Technical and Further Education Commission 21.4 Clay products (Higgins 21.4) EMMAT101A Engineering Materials and Processes Fireclay Shaping clay products Higgins

TAFE NSW -Technical and Further Education Commission 21.4 Clay products (Higgins 21.4) EMMAT101A Engineering Materials and Processes Hydroplastic forming The heat-treatment of clay products Drying Firing Higgins

TAFE NSW -Technical and Further Education Commission 21.5 Engineering ceramics (Higgins 21.5) EMMAT101A Engineering Materials and Processes Magnesium oxide Higgins

TAFE NSW -Technical and Further Education Commission 21.5 Engineering ceramics (Higgins 21.5) EMMAT101A Engineering Materials and Processes Aluminium oxide Higgins

TAFE NSW -Technical and Further Education Commission 21.5 Engineering ceramics (Higgins 21.5) EMMAT101A Engineering Materials and Processes Silicon nitride Sialons Zirconia Some other engineering ceramics Ceramic Si 3 N 4 bearing parts: Wikipedia

TAFE NSW -Technical and Further Education Commission 21.6 Properties of ceramics (Higgins 21.6) EMMAT101A Engineering Materials and Processes Strength Creep Hardness Higgins

TAFE NSW -Technical and Further Education Commission 21.6 Properties of ceramics (Higgins 21.6) EMMAT101A Engineering Materials and Processes Refractoriness Higgins

TAFE NSW -Technical and Further Education Commission 21.7 Cement (Higgins 21.7) EMMAT101A Engineering Materials and Processes Cement as an engineering material Higgins

TAFE NSW -Technical and Further Education Commission 21.8 Semiconductors (Higgins 21.8) EMMAT101A Engineering Materials and Processes Doping Production of doped silicon chips Purification of silica Crystal growth Slice preparation Epitaxial growth Silicon dioxide mask Doping Higgins

TAFE NSW -Technical and Further Education Commission EMMAT101A Engineering Materials and Processes Videos:

TAFE NSW -Technical and Further Education Commission EMMAT101A Engineering Materials and Processes Wikipedia: Ceramic Materials Resources.

TAFE NSW -Technical and Further Education Commission Glossary EMMAT101A Engineering Materials and Processes Compounding Doping Refractoriness Crystalline Glass

TAFE NSW -Technical and Further Education Commission QUESTIONS Higgins Ch21 1.Define all glossary terms 2.According to the engineering definition, what is the difference between ceramic and glass? 3.What distinguishes a ceramic material from a metal? 4.List 3 examples in each class of ceramics: Domestic ceramics, Natural ceramics, Engineering ceramics, Glasses and glass ceramics, Electronic materials. 5.Explain slip casting. What is the names of the equivalent method using polymers? 6.Outline the main properties of ceramics that have advantage over metals. What are their main drawbacks – compared to metals? Consider: Strength, toughness, stiffness, density, refractoriness, ductility, hardness. 7.Research on ceramic engines began decades ago. Why use ceramic? What are the problems? 8.Explain the essential differences in properties and behaviour under load between metallic crystals and ionically bonded ceramic crystals. 9.Describe three processes by which ceramic materials may be shaped prior to firing or sintering. EMMAT101A Engineering Materials and Processes