Ceramics - material made up of two or more elements, withcrystal structures more complex than those
for metals.
bonding ranges from purely ionic to totally covalent.
Crystal structure is purely influenced by? - Electrical charge of ions
Relative sizes of Anion and Cation (rc/ra always < 1)
The most common coordination numbers - 4,6,8 -> determined by rc/ra ratio
anion prefers? - prefer to have as maximum cations as possible
cation prefers? - to have as many nearest neighbour anions as possible
the ratio of the radii is greater than 1 - then the coordination number is 12
Size of an Ion depends on? - Coordination Number increases: When CN increases the radius increases
Charge of Ion: The radius of the ion increases with the ions of number of electrons.
Most common ceramic types? - AX-Type
AmXp-Type
AmBnXp-Type
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