How to calculate Cp of High entropy ceramics composites

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Faisal Nazeer
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How to calculate Cp of High entropy ceramics composites

Post by Faisal Nazeer »

Hi All, I am confused How to calculate specific heat capacity (Cp) of High entropy ceramics composites by using neuman-kopp method? is any one know please let me know? thanks in advance
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ChenBeier
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Re: How to calculate Cp of High entropy ceramics composites

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You need the specific heat capacity of each component in your ceramic and the mass fraction of each component.
The Neumann Kopp law is here

https://en.m.wikipedia.org/wiki/Kopp%27s_law
Faisal Nazeer
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Re: How to calculate Cp of High entropy ceramics composites

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I used the method whixh you mentioned but the results are not accurate much difference
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ChenBeier
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Re: How to calculate Cp of High entropy ceramics composites

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The method is valid at 25°C, at other temperature it differs.
Get the right mass fraction? What kind of Oxides you have?
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Re: How to calculate Cp of High entropy ceramics composites

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I am using high entropy ceramic mono and disilicates , even at room temperature the values different which are already mentioned in the literature, so don't know what's wrong with the calculation
Er2O3+Tm2O3+Sc2O3+Yb2O3+8SiO2=4(Er0.25Tm0.25Sc0.25Yb0.2)2Si2O7
For Cp using equation
O.25Cp(Er2O3)+0.25Cp(Tm2O3).......+SiO2
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ChenBeier
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Re: How to calculate Cp of High entropy ceramics composites

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I dont see calculation for mass fraction. You used mole fraction, do you?
Take maybe 1 g of the ceramic and calculate the grams of each oxide by using molar mass.
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How to calculate the density of high entropy ceramics composites?

Post by Faisal Nazeer »

Hi all,
I want to know how we can calculate the density of high entropy ceramics composites?
unit cell mass and unit cell volume of high entropy ceramics ?
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