final exam

Question 1

atmosphere (Oxidation)

Answer 1

enough air for complete combustion of the fuel

Question 2

Atmosphere (Reduction)

Answer 2

Incomplete combustion of the fuel producing CARBON (cuts off oxygen)

Question 3

Bat

Answer 3

Easy removal of pots from wheelhead (clay disk)

Question 4

Calcine

Answer 4

To heat a ceramic material enough to drive off the chemical water

Question 5

Cone

Answer 5

Fire metric cones are pyramids of clay & fluxes that are meant to melt at specific temperatures.

Question 6

Crawling

Answer 6

(Glaze Fault) Clay pulls away from the clay body and leaves a bald spot

Question 7

Crazing

Answer 7

FRACTURES in glaze caused by differences in contraptions between the body & glaze during cooling.

Question 8

Eutectic

Answer 8

Lowest melting point of the mixture of materials composing a glaze.

Question 9

Frit

Answer 9

Glass that’s been fired in ground in screen that’s a common ingredient in low and medium fire glazes. GLASS MATERIAL. if it’s already fired then it’ll be easier 2nd time, higher # the smaller time?

Question 10

Kiln Wash

Answer 10

Protective coating that is commonly made of Kalen & Flint. (keeps it from sticking to the shelves)

Question 11

Low Fire

Answer 11

Cone 06 to 05 (cone 05 is higher)

Question 12

Opacifier

Answer 12

Material added to a glaze to reduce translucency.

Question 13

Oxide

Answer 13

Glazed colorants (heavy metal oxides are the glaze colorants)

Question 14

Porcelain

Answer 14

Translucent white clay body. (fine particles)

Question 15

Raku

Answer 15

Low fire process done in a gas kiln but reduction happens outside the kiln rather than inside the kiln.