Chapter 4 DQV10082 Revision

It is known as ‘Burned stuff’ or ‘kiln-fired material’

Inorganic, non-metallic materials, crystalline which are formed by the action of heat

This statement is refers to..

• metal

• plastic

• composite

• ceramic

Figure shown slip casting process.

Select the steps follow the sequences

• 1) Removed green ware from the mould when it has sufficient dried

  2)Slip is poured into a plaster of Paris (POP) mold

  3)The water from the slurry will be absorbed by POP mould through capillary action a thick mass build along the mold wall

  4)When sufficient product thickness is built the rest of the slurry is poured out

• 1) Slip is poured into a plaster of Paris (POP) mold

  2)The water from the slurry will be absorbed by POP mould through capillary action a thick mass build along the mold wall

  3)When sufficient product thickness is built the rest of the slurry is poured out

  4) Removed green ware from the mould when it has sufficient dried

• 1)Removed green ware from the mould when it has sufficient dried

  2)Slip is poured into a plaster of Paris (POP) mold

  3)When sufficient product thickness is built the rest of the slurry is poured out

  4)The water from the slurry will be absorbed by POP mould through capillary action a thick mass build along the mold wall

• 1)Slip is poured into a plaster of Paris (POP) mold

  2)Removed green ware from the mould when it has sufficient dried

  3)When sufficient product thickness is built the rest of the slurry is poured out

  4)The water from the slurry will be absorbed by POP mould through capillary action a thick mass build along the mold wall

Below are properties of ceramic EXCEPT

• High hardness

• High melting temperature

• Electrical conductor

• Chemical inertness

Ceramic is higher compressive strength but lower tensile strength

• True

• False

Ceramic is known as an electrical insulators, having no free electrons.

However, in some case ion mobility becomes significant at temperatures above 500-60OºC

and they then become progressively more conductive

• True

• False

Their melting points are often very high making them eminently suited for

use in medical application

• True

• False

Ceramics are hard as well as strong. They resist scratching or indentation and are potentially

suited for use as wear-resistant bearings and as abrasive particles for metal removal

• True

• False

Figure above shown

• Whitewares ceramic

• Refractories

• Structural ceramic

• Technical ceramic

Ceramic is many use in engine and military application

• True

• False

Whitewares ceramic are....

(more than 1 answer)

• Bone china

• Porcelain

• Earthenware

• Stoneware