I need weight percentage of ceramic powders like TiO2,SiO2, Al2O3 and CaF2 for my work.
From SEM-EDX can i found the wt% of ceramic compounds?
Hi Lochan,
yes you can find wt% using SEM-EDX but it will be better if you use ICP-MS.
@Shiv Dutt Purohit
sir, i have powder samples but ICP-MS is applicable for liquid sample is it or not?
Hi Lochan,
It is right that you need liquid sample for ICP. But you can dissolve your sample in acid, aqua regia or any other solvent in which the compounds can be dissolved. ICP will give you far more reliable result compared to EDX. In case of EDX you will get a relative percentage of Ti, Si, Al, Ca, F and O. But the problem of EDX is that it will give you a very rough estimate of the atomic counts. Many experts don't consider the EDX data as reliable results. If you are taking EDX measurement at different parts of your sample you might get different atomic ratio of the elements. Even you can alter with the values by pre-defining the compound.
Alternatively you can use XRF.
@ Uttam Kumar
Thanku very much sir for your valuable suggestions.
Sir i have one question that, Is XRF gives wt% of compounds or elemental content of above said elements or gives both??
Not only XRF but all the three methods mentioned here are elemental analysis techniques. So you will get relative persentage of elements present in your compound. You need to show XRD patterns to justify the presence of each components along with some elemental analysis to justify the ratio.
Hello
From my experience for samples containing SiO2 it is better to use EDX. Dissolving the sample in HCl or H2SO4 may not provide the SiO2 content adequately
@ Geetanjali mam, Can you please tell me all the acid required for dissolution of all my ceramic powders (like TiO2, SiO2, Al2O3, MgO, CaF2, CaO).
I mean to say that which acid required for dissolving TiO2, SiO2, Al2O3, MgO, CaF2, CaO ceramic mineral powders? Plz suggest it will help for my work.
Regards
Lochan
You need standards to calibrate the content.
https://www.researchgate.net/profile/Wen-Cheng_Wei/publication/240418811_Quantitative_Characterization_of_Various_Tetragonal_Zirconia_Polycrystals_TZPs/links/551932b80cf21b5da3b7cd5f.pdf
Article Quantitative Characterization of Various Tetragonal Zirconia...
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