Mechanochemical processing of low-grade diamond into nanocomposite materials

Phenomenology, Kinetics and Application of Abrasive-Reactive Wear during Comminution (Overview)

“…In order to prepare such nanocomposites, the method based on ARW by MA in MRs (with cupric milling tools) using par ticles of substandard diamonds appears interesting and very able to replace various labor-and power-consuming processes, see Fig. 13-17 and details in 26) . After the MA of diamond and diamond-graphite mixture (1:1), the XRD data virtually did not differ under identical measurement conditions (Fig.…”

“…Extending the ARW method is of particular interest as regards the use of carbon 26,35) , in particular graphite 37) , and sulfur 38) , which have unique physicochemical and mechanical properties 29,36,47) . Carbon and sulfur in ARW can open up a new line in making nanocomposite materials on a carbide 4,19,24,25,31) or sulfide 1,5,8,9,14,15,27,28,39) basis.…”

“…Fig. 9 -diamond (to obtain cohenite 35) ) and a powder mix of diamond, graphite, and copper (to obtain high-heat-conducting composite materials 26,30) ). During diamond MA, a self-lining of the milling tools is barely visible.…”

“…It opens the door to applications of the ARW phenomenon to obtain nanocomposite powders and for carrying out the synthesis of chemical compounds, functional materials, and for processing mineral and man-made raw materials. It will be shown here how the wearing of milling tools could instead provide an alternative synthetic route to materials of technological interest 26,29) such as the Cu-diamond composites that possess a high thermal conductivity 30) . We must note that throughout the world, there is currently no direction of research analogue to that pursued by us.…”

“…From these scattered repor ts it is evident that regular research of the participation of a material of milling tools in the course of mechanochemical reactions was not carried out. A novel strategy for their exploitation as an effective synthetic route will be described which will permit the preparation of fine materials for high-tech purposes 26) . The choice of focusing on abrasive-reactive materials is motivated by the possibility of synthesizing them via both gradual 4) and combustive 5) mechanochemical reactions starting from elemental powders.…”