During the process of boronizing, which as a rule takes place at temperatures between 850¡ãC and 950¡ãC, boron atoms diffuse into the metal surface and form metal borides. The structure and properties of these borides are influenced significantly by the type of substrate. With ferrous materials, the boride layers attain a Vickers hardness of between 1600 and 2000; with nickel-based alloys, by contrast, a Vickers hardness of up to 2800 is obtained. Depending on the application and the base material, layer thickness range between 20 ¦Ìm and 300 ¦Ìm. These layers adhere excellently to the substrate, since they are formed by a diffusion process which results in an intimate connection between boride and substrate.
Most steels of the construction, case-hardened and tempered, chemically-resistant and tool-making types lend themselves to boronizing, as do Armco iron, cast iron and sintered iron.
However, owing to unsolved problems and serious deficiencies that, to this day, remain unrectified, gas- and liquid-phase boronizing have not become state-of-the-art. Technological variants of boronizing are therefore based solely on solid boronizing agents.
SAMT is owning the specific process know-how and solid boronizing agent, and willing to provide the boronzing process which is still as niche process and currently unavailable from the market to the most extent.
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