Finishes

Question 1

List metal finishes

Answer 1

Painting
Piling
Sealant
Anodising
Electroplating
Powder coating
Preservatives

Question 2

Adv/Disadvantages of varnish

Answer 2

Adv: clear/ coloured. Protective. Hard

Disadv: time consuming to apply; can look yellow

Question 3

Anodising process

Answer 3

Aluminium as an anode within an electrolyte bath.
current passed through
oxygen reacts with the surface of the aluminium
creating an anodic layer.

Increases resistance and hardness

Question 4

Powder coating process

Answer 4

cleaning and preparing the surface,
applying the powder using electrostatic
baking the coated item to melt and fuse the powder into a solid layer

Question 5

Catholic protection use

Answer 5

Impressed current: Under water