Metals And Alloys

Question 1

what is anodising?

Answer 1

an electrolytic passivattion process used to increase the thickness of the natural oxide layer on the surface.

Question 2

what is brass?

Answer 2

a yellow alloy of copper and zinc

Question 3

what is bronze?

Answer 3

a yellow alloy of copper and tin

Question 4

what is copper used in?

Answer 4

driving bands
detonators
shaped charge liners
cartridge cases
saa jackets

Question 5

define the word creep

Answer 5

a permanent change in the physical dimensions of a metal caused by a continuous applicatipn of stress

Question 6

what is iron

Answer 6

a heavy, ductile, malleable and magnetic element. one of the most common elements on earth

Question 7

what is a metalloid

Answer 7

an element having some properties of metal and non metal

Question 8

what is sintering

Answer 8

a compression of metal particles into a coherent solid body.

Question 9

what is an alloy

Answer 9

metallic substances that contain more that one chemical element

Question 10

what is lustre

Answer 10

the ability for the surface of a metal to reflect light