Use of Mechanical Alloying for Production of Aluminium Matrix Composites with Non Agglomerated Nanodiamond Reinforcing Particles

Agglomeration is the main problem that prevents large scale implementation of nanodiamonds in the production of composites. Mechanical alloying was applied for crushing the agglomerates and to obtain uniform distribution of the primary nanodiamond particles in aluminium matrix composites. The commonly used X ray dif raction method fails to detect non agglomerated diamond nanoparticles 5 to 6 nm in size, if they are incorporated in a metal matrix. Synchrotron radiation DIFFRACTION at KMC 2, BESSY was used for the identi cation of non agglomerated nanodiamonds. Scanning electron microscopy and synchrotron investigation showed that mechanical alloying does not lead to transformation of the diamond structure into other allotropic forms of carbon and the nanodiamond reinforcing particles are uniformly distributed in the aluminium matri

Detonation synthesis nanodiamonds for reinforcing metal matrix composite coatings operated under shock load

The paper is about the development of the coating from metal matrix composites with nanodiamond reinforcing particles to be applied for hard conditions including shock impacts. The main problem of using nanodiamonds in production of composites is their agglomeration, i.e., aggregation of primary nanodiamond particles 4–6 nm in size into agglomerates of up to 100 nm to 10 μm. Application of mechanical alloying for producing composites allows to obtain uniform distribution of separate initial nanodiamond particles inside copper matrix. Friction plating was applied for deposition of composite coatings. Deformation tests show that coatings applied by friction plating have high adhesion to substrate