Phase Diagrams Flashcards
A phase diagram consisting of two components is called a:
Binary Phase Diagram
Definition of a phase diagram:
A graphical presentation of the relationships between phase compositions at a given temperature under equilibrium
4 Classifications of Phase Diagrams
- Complete Solid and Liquid solution diagram
- Eutectic Diagram without solubility in solid state
- Eutectic Diagram with partial solubility in solid state
- Peritectic Diagram
What is the top line in a complete solid and liquid solution phase diagram?
Liquidus Line
What is the bottom line in a complete solid and liquid solution phase diagram?
Solidus Line
What does the left vertical intercept equate to in a complete solid and liquid solution phase diagram?
Melting Point of A
What does the right vertical intercept equate to in a complete solid and liquid solution phase diagram?
Melting Point of B
What is the Rule to calculate weighting of A and B in a phase diagram?
Lever Rule
At what point do both Liquidus lines meet the Solidus line in a Eutectic diagram without solid state solubility?
Eutectic Point
How does a Eutectic Reaction go?
L -> (A+B)
What are the areas at the sides of a Eutectic diagram with partial solubility in solid state?
Areas of Partial Solubility
Which of the lines in a Eutectic diagram with partial solubility in solid state are Liquidus?
Only the Top two lines
How does a peritectic reaction go?
(a+L) -> B
