Nanoparticles plays an important role now a days in different fields such as power/energy, Healthcare/ medical, engineering, consumers goods, environmental, electronics etc. We have concern with engineering basic. Industries, the well established applications are structure enhancement of polymers and composites, thermal spray coatings based on TiO2, Tic – Co etc. Ink’s conducting magnetic etc. using metal powders, Abrasion resistant coating using alumina, Y-Zr2O3, Lubricant hydraulic additives CuMoS2, Pigments self-cleaning glass using TiO2, propellant using Aluminum. Nano technology or Nano particle play an important role in many industries. As the particle become smaller their properties can change in mysterious and useful ways one way to produce nano particles is to reduce the size of bigger particle by grinding.

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