For my research i wanted a particular size range of nano SiC particles
In a powder that's not possible. You would need the SiC in atomized form (i.e.in gas) or in stable colloidal suspension to have all the individual particles < 100 nm.
Look at the specific surface area and see if you can get SiC's with SSA's > 60m2/cm3. For example:
Article New Synthesis and Uses of High-Specific-Surface SiC as a Cat...
You will get claims like this. Treat them with a pinch of sodium chloride:
https://www.sigmaaldrich.com/catalog/product/aldrich/594911?lang=en®ion=US
Such materials are characterized by TEM (and thus must be < 100 nm!)
In Sigma Aldrich less than 100nm size particles are available. More information you can get from their support team.
Here is the important link for you.
https://m.sigmaaldrich.com/IN/en/product/aldrich/594911?lang=en®ion=US
Anand S. Burange
You've posted the exact same link as I have above. The "< 100 nm" of this product is by TEM and therefore it's a self-fulfilling prophesy. What you get is a collection of sub- and post-micron aggregates....
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