Ch 9 - Ceramic Materials

What is the meaning of 'Keramikos' in Greek?

• Metallic compound

• Burnt stuff

• Strong material

• High temperature process

What are the general properties of ceramics?

• Low strength and hardness at elevated temperatures

• High thermal and electrical conductivity

• High chemical stability and low melting temperature

• Sensitive to flaws, defects, and surface cracks

What are the two categories of ceramics?

• High temperature ceramics and low temperature ceramics

• Traditional ceramics and industrial ceramics

• Metallic ceramics and non-metallic ceramics

• Hard ceramics and soft ceramics

What is the unit cell of ceramics generally more complex than metals?

• It contains more than one element

• It has low packing factors

• It has high-density planes and directions

• It has mixed bonding (ionic and metallic)

Which is the most widely used oxide ceramic?

• Zirconia

• Silica

• Alumina

• Titanium oxide

What is the most simple silicate material?

• Silicon Dioxide

• Aluminum Oxide

• Zirconium Oxide

• Calcium Fluorite

What is the color of glass obtained by adding small amounts of cobalt?

• Red

• Purple

• Blue

• Green

Which material is tungsten carbide made of?

• Tungsten and carbon

• Tungsten and titanium

• Tungsten and silicon

• Tungsten and nitrogen

What are ceramic knives made of?

• Alumina

• Zirconium oxide

• Titanium carbide

• Silica

What are ceramic ball and roller bearings used for?

• Low temperature and high speed conditions

• Low temperature and low speed conditions

• High temperature and low speed conditions

• High temperature and high speed conditions