ball mills for nanoparticles
Nanoparticles of ε Fe 2 O 3 were prepared using a high energy ball mill. The ball mill is equipped with a 100 ml stainless steel ball mill jar and works at 300 rpm. To prepare the nanoparticles 100 g of 5 mm 7 mm and 8 mm stainless steel balls were loaded into the ball mill jar as the grinding medium. ball milling cost for nanoparticle
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