**5. Conclusion**

Thus, studies of interactions between finely dispersed palladium powders that are in free contact under dissipative conditions of low temperatures indicate the group behaviour of particles at various scale levels. Structural aggregation takes place in stages, with the allocation of an aggregation field area at each scale level:

	- Small-scale clustering
	- Medium-scale aggregation and divergence of cluster types in the aggregate
	- Large-scale aggregation
	- Aggregate formation and shell formation (microencapsulation)
	- Recrystallization at the subgrain level
	- Recrystallization at grain level

In the collective effects of self-organization, periodic activation of mass transfer is observed, in which nanoparticles of various mesoscale structure organization are involved. The solid phase finely dispersed substance evolves mobile in the process

of dissipation of surface energy, which takes on new forms at every scale level of the organization while maintaining the structural identity of its constituent particles. The manifestation of a multiscale structure, close relationship and mutual influence of various scale levels is one of the key points in the processes of mass transfer in contact interactions.
