1. CERAMICS Structure and Properties of Ceramics Traditional Ceramics
New Ceramics
Glass
John Wiley & Sons, Inc. M P Groover, Fundamentals of Modern Manufacturing

2. Alumina ceramic components (photo courtesy of Insaco Inc.).
John Wiley & Sons, Inc. M P Groover, Fundamentals of Modern Manufacturing

3. Ceramic Defined Inorganic compound consisting of metal (or semi‑metal)
one or more nonmetals
Silica - silicon dioxide (SiO2)
main ingredient in most glass products
Alumina - aluminum oxide (Al2O3)
abrasives to artificial bones
Hydrous aluminum silicate (Al2Si2O5(OH)4)
clay products
John Wiley & Sons, Inc. M P Groover, Fundamentals of Modern Manufacturing

4. Properties of Ceramic Materials
High hardness
Electrical and thermal insulating
Chemical stability
High melting temperatures
Brittle, virtually no ductility
problems in processing
Problems in perfromance
Some ceramics are translucent
window glass (based on silica)
John Wiley & Sons, Inc. M P Groover, Fundamentals of Modern Manufacturing

5. Ceramic Products Construction bricks clay pipe Refractory ceramics
furnace walls
crucibles
molds
Cement used in concrete
Whiteware products
pottery
John Wiley & Sons, Inc. M P Groover, Fundamentals of Modern Manufacturing

6. Ceramic Products (continued)
Glass
bottles
Glass fibers
reinforced plastics (fiberglass)
Abrasives
aluminum oxide in grinding wheels
silicon carbide in grinding wheels
Cutting tool materials
tungsten carbide
aluminum oxide
cubic boron nitride
John Wiley & Sons, Inc. M P Groover, Fundamentals of Modern Manufacturing

7. Categories of Ceramics
Traditional ceramics
clay products
New ceramics
oxides, carbides, etc.
better mechanical or physical properties
Glasses
based on silica
noncrystalline structure
John Wiley & Sons, Inc. M P Groover, Fundamentals of Modern Manufacturing

8. Synthetically produced diamond powders (photo courtesy of GE Superabrasives, General Electric Company).
John Wiley & Sons, Inc. M P Groover, Fundamentals of Modern Manufacturing

9. Strength Properties of Ceramics
strong covalent and ionic bonding
Metals
weaker metallic bonding
bonding allows for slip
metals deform plastically
Bonding in ceramics
more rigid
does not permit slip under stress
difficult to absorb stresses
John Wiley & Sons, Inc. M P Groover, Fundamentals of Modern Manufacturing

10. New Ceramics Stronger in compression than in tension
Developed synthetically
Oxide ceramic
alumina Al2O3
cutting tool inserts
spark plug barrels
Carbide ceramic
silicon carbide (SiC)
tungsten carbide (WC)
titanium carbide (TiC)
Nitrides
John Wiley & Sons, Inc. M P Groover, Fundamentals of Modern Manufacturing

11. SME Video
John Wiley & Sons, Inc. M P Groover, Fundamentals of Modern Manufacturing

12. In-class example Tooling Specialists
What is the resistance R of a length of copper wire whose length = 10 m and whose diameter = 0.10 mm?
John Wiley & Sons, Inc. M P Groover, Fundamentals of Modern Manufacturing

13. ASSIGNMENT – STUDENT MUST SHOW SOLUTION TO PROFESSOR DURING LAB PERIOD
A 16 gage nickel wire ( inch diameter) connects a solenoid to a control circuit that is 32.8 ft away. (a) What is the resistance of the wire?
r = 2.7 x 10-6 Ω∙in
John Wiley & Sons, Inc. M P Groover, Fundamentals of Modern Manufacturing