Ceramics Flashcards
How are ceramics made?
When certain inorganic compounds (metal and non-metals) is extreme heated, the water in it vaporized and the bonds between the compounds are re-arranged to form ceramics
What are properties of ceramics
- Low electrical conductivity
- Hardness
- Heat resistance and low thermal conductivity
- Resistance to corrosion
- Resilient
Why is low conductivity useful?
Used as insulators in electronics (often in resistors)
Why is hardness useful?
Used in building materials (counter tops, flooring)
Why is heat resistance and low thermal conductivity useful?
Found in kitchen appliances and heat shield on space shuttles
Why is resistance to corrosion useful?
Used in ducts for fumes and water
Exhaust in your car
Why is resilience useful?
Used in engines if they are manufactures to have extreme hardness as well
What are the degradation problems for ceramics?
- Exposure to H2SO4 or Ca(OH)2
- Thermal shock
How to fix the Exposure to H2SO4 or Ca(OH)2 problem?
Avoid exposure
How to fix the thermal shock problem?
Avoid exposure to extreme temperature fluctuations
