# How to Calculate and Solve for Activation Energy for Heterogeneous Nucleation | Phase Transformation

The image above represents activation energy for heterogeneous nucleation. To calculate activation energy for heterogeneous nucleation, three essential parameters are needed and these parameters are Solid – Liquid Interface (Î³SL),Â Volume Free Energy (Î”Gv) and Function, S(Î¸).

### The formula for calculating activation energy for heterogenous nucleation:

Î”G* = (16Ï€Î³SLÂ³/3Î”GvÂ²)S(Î¸)

Where:

Î”G* = Activation Energy for Heterogeneous Nucleation
Î³SL = Solid-Liquid Interface
Î”GvÂ = Volume Free Energy
S(Î¸) = Function

Let’s solve an example;
Find the activation energy for heterogenous nucleation when the solid – liquid interface is 12, the volume free energy is 6 and the function is 2.

This implies that;

Î³SL = Solid Liquid Interface = 12
Î”Gv = Volume Free Energy = 6
S(Î¸) = Function = 2

Î”G* = (16Ï€Î³SLÂ³/3Î”GvÂ²)S(Î¸)
That is, Î”G* = (16Ï€(12)Â³/3(6)Â²)(2)
Î”G* = (16Ï€(1728)/3(36))(2)
Î”G* = ((86858.75)/(108))(2)
So, Î”G* = (804.24)(2)
Î”G* = 1608.49

Therefore, theÂ activation energy for heterogenous nucleationÂ isÂ 1608.49

### How to Calculate Activation Energy for Heterogeneous Nucleation Using Nickzom Calculator

Nickzom Calculator â€“Â The Calculator Encyclopedia is capable of calculating the activation energy for heterogenous nucleation.

To get the answer and workings of the activation energy for heterogenous nucleation using the Nickzom Calculator â€“ The Calculator Encyclopedia.Â First, you need to obtain the app.

You can get this app via any of these means:

To get access to theÂ professionalÂ version via web, you need toÂ registerÂ andÂ subscribeÂ to have utter access to all functionalities.
You can also try theÂ demoÂ version viaÂ https://www.nickzom.org/calculator

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Android (Paid)Â â€“Â https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator
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Once, you have obtained the calculator encyclopedia app, proceed to theÂ Calculator Map,Â then click onÂ Materials and MetallurgicalÂ underÂ Engineering.

Now, Click onÂ Phase TransformationÂ underÂ Materials and Metallurgical

Now, Click on Activation Energy for Heterogenous NucleationÂ underÂ Phase Transformation

The screenshot below displays the page or activity to enter your values, to get the answer for the activation energy for heterogenous nucleation according to the respective parameter which is the Solid – Liquid Interface (Î³SL),Â Volume Free Energy (Î”Gv) and Function, S(Î¸).

Now, enter the values appropriately and accordingly for the parameters as required by the Solid – Liquid Interface (Î³SL) is 12,Â Volume Free Energy (Î”Gv) is 6Â and Function, S(Î¸) is 2.

Finally, Click on Calculate

As you can see fromÂ the screenshot above,Â Nickzom Calculatorâ€“ The Calculator Encyclopedia solves for the activation energy for heterogenous nucleation and presents the formula, workings and steps too.