Lecture 3

Question 1

What are the Indicate orientation of planes in lattice structure?

Answer 1

Indicate orientation of planes in lattice structure

Question 1

What are the Hume-Rotherly Rules?

Answer 1

Describes if a substance can dissolve in a metal:
Substitutional solutions are favored if:
* The difference in the size of the atomic radii < 15%
* Electronegativities are similar
* Valence charges of the two atoms be similar
* When the solute fraction is large, the crystal structure of the two atomic species must be identical

Question 2

What are the properties of silicate glass?

Answer 2

chemical resistance, minimal thermal expansion, brittle

Question 3

What are some uses for silicate glass?

Answer 3

repair and replace diseased or damaged bones

Question 4

What are the properties of ceramic-alumina?

Answer 4

Dense, inert, non-porous, scratch resistant, excellent corrosion resistance

Question 5

What is a use of ceramic-alumina

Answer 5

orthopedic implants

Question 6

What are the properties of ceramic-zirconia

Answer 6

Very high refractive index (similar to diamond)
– inert, non-porous, wear-resistant, excellent
corrosion resistance

Question 7

What is a use for ceramic-zirconia?

Answer 7

Dental implants