The image above represents diffusion coefficient for vacancy. To calculate diffusion coefficient for vacancy, four essential parameters are needed and these parameters are Constant (k2), Activation Energy for Diffusion (Qd), Boltzmann’s Constant (K) and Temperature (Kelvin) (T).
The formula for calculating diffusion coefficient for vacancy:
Vd = k2exp(-Qd/KT)
Where:
Vd = Diffusion Coefficient for Vacancy
k2Â = Constant
K = Boltzmann’s Constant
T = Temperature
Qd = Activation Energy for Diffusion
Let’s solve an example;
Find the diffusion coefficient for vacancy when the constant is 12, the activation energy for diffusion is 6, the boltzmann’s constant is 1.380E-23 and the temperature is 10.
This implies that;
k2 = Constant = 12
K = Boltzmann’s Constant = 1.380E-23
T = Temperature = 10
Qd = Activation Energy for Diffusion = 6
Vd = k2exp(-Qd/KT)
That is, Vd = (12)exp(-(6)/(1.38064852e-23)(10))
Vd = (12)exp((-6)/(1.3806485199999997e-22))
Vd = (12)exp(-4.345783820490389e+22)
So, Vd = (12)(0)
Vd = 0
Therefore, the diffusion coefficient for vacancy is 0 m²/s.
Read more:Â How to Calculate and Solve for Conversion of Volume Fraction to Mass Fraction | Phase Transformation
How to Calculate Diffusion Coefficient for Vacancy With Nickzom Calculator
Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the diffusion coefficient for vacancy.
To get the answer and workings of the diffusion coefficient for vacancy using the Nickzom Calculator – The Calculator Encyclopedia. First, you need to obtain the app.
You can get this app via any of these means:
Web – https://www.nickzom.org/calculator-plus
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You can also try the demo version via https://www.nickzom.org/calculator
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Apple (Paid) – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8
Once, you have obtained the calculator encyclopedia app, proceed to the Calculator Map, then click on Materials and Metallurgical under Engineering.
Now, Click on Phase Transformation under Materials and Metallurgical
Now, Click on Diffusion Coefficient for Vacancy under Phase Transformation
The screenshot below displays the page or activity to enter your values, to get the answer for the diffusion coefficient for vacancy according to the respective parameter which is the Constant (k2), Activation Energy for Diffusion (Qd), Boltzmann’s Constant (K) and Temperature (Kelvin) (T).
Now, enter the values appropriately and accordingly for the parameters as required by the Constant (k2) is 12, Activation Energy for Diffusion (Qd) is 6, Boltzmann’s Constant (K) is 1.380E-23 and Temperature (Kelvin) (T) is 10.
Finally, Click on Calculate
As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the diffusion coefficient for vacancy and presents the formula, workings and steps too.
