Chapter 13 Applications and Processing of Ceramics

Question 1

classification of ceramics

( 8 types )

Answer 1

Question 2

ceramic application

1) cutting tools

Answer 2

Question 3

ceramic application

2) sensors

Answer 3

Question 4

refractories

Answer 4

refractory is a material that is resistant to decomposition by heat, pressure, or chemical attack, and retains strength and form at high temperatures.

Question 5

advanced ceramics

( advantages ) materials for automobile engines

Answer 5

advantages

• operate at high temperature(high efficiencies)
• low frictional losses

operate without colling system

lower weights than the current engine

Question 6

advanced ceramics

( disadvantages ) materials for automobile engines

Answer 6

disadvantages

-ceramic materials are brittle

difficult to remove internal voids(that weaken structures)

ceramic parts are difficult to form and machine

Question 7

advanced ceramics

materials fro ceramic armour

Answer 7

Question 8

nanocarbons

carbon nanotubes

Answer 8

carbon nanotubes -are tubes made of carbon with diameters typically measured in nanometers.

Question 9

nanocarbons

fullerenes

Answer 9

A fullerene is an allotrope of carbon whose molecule consists of carbon atoms connected by single and double bonds so as to form a closed or partially closed mesh, with fused rings of five to seven atoms.

Question 10

nanocarbons

graphene

Answer 10

Graphene is an allotrope of carbon consisting of a single layer of atoms arranged in a two-dimensional honeycomb lattice nanostructure.

Question 11

what are the 3 ceramoc fabrication methods

Answer 11

glass-forming

particulate forming

cementation

Question 12

ceramic fabrication methods

1) glass forming

Answer 12

Question 13

_{ceramic fabrication methods}

_{1) glass forming}

sheet glass forming

Answer 13

The sheet glass process began with the mechanically drawing cylinder process, where large glass cylinders were made to be split and flattened into plates, and has developed into continuous vertical drawing processes.

Question 14

_{ceramic fabrication methods}

_{1) glass forming}

Glass structure

Answer 14

Question 15

_{ceramic fabrication methods}

_{1) glass forming}

glass properties

Answer 15

Question 16

_{ceramic fabrication methods}

_{1) glass forming}

viscosity

Answer 16

Viscosity is a measure of a liquid’s fluidity, and is measured through a substance’s resistance to motion under an applied force.

Question 17

_{ceramic fabrication methods}

_{1) glass forming}

glass viscosity vs temperature

Answer 17

Question 18

_{ceramic fabrication methods}

_{1) glass forming}

heat treating

Answer 18

Heat treating is a group of industrial, thermal and metalworking processes used to alter the physical, and sometimes chemical, properties of a material.

Question 19

_{ceramic fabrication methods}

_{2 ) glass forming}

slip casting

Answer 19

Slip casting, or slipcasting, is a ceramic forming technique for pottery and other ceramics, especially for shapes not easily made on a wheel.

Question 20

_{ceramic fabrication methods}

_{2 ) glass forming}

hydroplasticity of clay

Answer 20

Hydroplasticity is lost because the clay particles fuse together during firing. Whereas before firing, water molecules occupied the space between clay particles enabling them to move freely.

Question 21

_{ceramic fabrication methods}

_{2 ) glass forming}

drying and firing

Answer 21

Question 22

_{ceramic fabrication methods}

_{2 ) glass forming}

powder pressing

Answer 22

Question 23

_{ceramic fabrication methods}

_{2 ) glass forming}

sintering

Answer 23

Sintering or frittage is the process of compacting and forming a solid mass of material by heat or pressure without melting it to the point of liquefaction

Question 24

_{ceramic fabrication methods}

_{2 ) glass forming}

tape casting

Answer 24

Question 25

ceramic fabrication methods

3 ) cementation

Answer 25

Question 26

Summary

• Categories of ceramics:
• Ceramic Fabrication techniques:
• Heat treating procedures

Answer 26