Mieszóródás

Mieszóródás is a proposed term in materials science and geochemistry describing the dynamic intermixing of distinct chemical or mineral phases within a host matrix under non-equilibrium conditions. The etymology reflects Slavic roots related to mixing, with a suffix that denotes a process.

The phenomenon arises when diffusion, advection, and phase transformation interact; fast thermal histories or reactive flows can create transient interpenetrating microstructures that evolve as conditions change. It is discussed as a general framework for understanding how mixed microstructures form and dissolve under non-steady driving forces.

Occurrence and reporting are found in experimental studies of polymer blends, metal alloys subjected to rapid cooling or mechanical processing, and geochemical fluids where reactive transport drives interfacial complexity. Observations are typically supported by time-resolved microscopy, tomography, and spectroscopic mapping, with metrics such as mixing rate, interfacial area, and domain size distribution used to quantify the process.

Models employed to describe Mieszóródás include phase-field methods and Cahn–Hilliard-type formulations, often extended with reaction-diffusion terms and, in fluid-containing systems, coupled with turbulent or laminar transport models. These approaches aim to capture the emergence and decay of mixed regions and the evolution of characteristic length scales.

Significance lies in predicting how microstructure affects properties such as toughness, conductivity, and corrosion resistance, and in guiding processing conditions to achieve desired material performance. The term appeared in specialized literature in the early 21st century and remains one of several descriptors for non-equilibrium mixing; some researchers prefer interdiffusion or spinodal-related terminology. See also diffusion; interdiffusion; spinodal decomposition; phase-field modeling.