FEATURES OF CHEMICAL AND THERMAL TREATMENT OF MICRO-OBJECTS OF DIFFERENT STRUCTURAL CLASSES

Abstract

One of the ways to increase the reliability and durability of machine parts, tools and technological equipment is chemical heat treatment. For hardening steel parts for various purposes, thermal diffusion alloying with boron is widely used. Traditional objects of chemical and thermal treatment are macro-parts, for which the thickness of the diffusion layer is several orders of magnitude less than the linear dimensions of the part. Recently, a new direction of chemical treatment is actively developing - diffusion alloying of micro-objects. The transition from the macrolevel to the microlevel fundamentally changes the diffusion alloying technology.

In this work, we investigated the processes of diffusion alloying with boron of micro-objects, in particular, products with a circular cross-section (wires) of various structural classes. According to the research results, the factors influencing the thickness of boride layers were determined. The intensity of borating of micro-objects of various structural classes has been determined.