What is the Difference Between Eutectoid Reaction and Peritectic Reaction?
🆚 Go to Comparative Table 🆚The main difference between eutectoid and peritectic reactions lies in the phases involved and the transformations that occur during these reactions.
- Eutectoid Reaction: This reaction involves a single solid phase decomposing into two different solid phases upon cooling. It is typically represented by the equation γ → α + β, and it is found in systems like iron-carbon. An example of a eutectoid reaction is the transformation of austenite into ferrite and cementite in steels.
- Peritectic Reaction: This reaction involves a solid phase and a liquid phase reacting to form a single solid phase at a specific temperature. It is represented by the equation γ → α + β, and it is found in systems like copper-zinc (brass). An example of a peritectic reaction is the reaction between ferrite and liquid iron to form austenite.
In summary:
- Eutectoid reaction: a single solid phase decomposes into two different solid phases upon cooling.
- Peritectic reaction: a solid phase and a liquid phase react to form a single solid phase at a specific temperature.
On this pageWhat is the Difference Between Eutectoid Reaction and Peritectic Reaction? Comparative Table: Eutectoid Reaction vs Peritectic Reaction
Comparative Table: Eutectoid Reaction vs Peritectic Reaction
The main difference between eutectoid and peritectic reactions lies in the phases involved in the reactions. Here is a table comparing the two types of reactions:
| Eutectoid Reaction | Peritectic Reaction |
|---|---|
| Occurs at the eutectoid point | Occurs at the peritectic point |
| A solid phase transforms into two other solid phases | A liquid phase and a solid phase collectively transform into a different solid phase |
| Iron's eutectoid reaction is an example, resulting in the formation of pearlite (a mixture of ferrite and cementite) | An example is the reaction between ferrite and liquid iron, forming a different solid phase |
In a eutectoid reaction, a solid transforms into two other solid phases at the eutectoid point. For instance, iron's eutectoid reaction results in the formation of pearlite, which is a mixture of ferrite and cementite. On the other hand, a peritectic reaction occurs at the peritectic point and involves the conversion of a liquid phase and a solid phase into a different solid phase.
Read more:
- Eutectic vs Eutectoid Reaction
- Azeotropic vs Eutectic
- Heat of Solution vs Heat of Reaction
- Heat of Formation vs Heat of Reaction
- Endothermic vs Exothermic Reactions
- Catalytic vs Non Catalytic Reaction
- Triple Point vs Eutectic Point
- E1 vs E2 Reactions
- Homogeneous vs Heterogeneous Reactions
- Catalytic vs Stoichiometric Reagents
- Nuclear Reaction vs Chemical Reaction
- Chemical vs Physical Reaction
- Heat of Fusion vs Crystallization
- Synthesis Reaction vs Substitution Reaction
- Synthesis Reaction vs Dissociation Reaction
- Combination vs Decomposition Reaction
- Composition vs Reaction Stoichiometry
- Enzymatic vs Nonenzymatic Reaction
- Photochemical vs Thermal Reaction