Boronising Applications

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Boronizing is a thermochemical surface hardening process that strengthens the material surface by diffusing boron atoms to the metal surface.

Boronizing is used to improve hardness, abrasion resistance and corrosion resistance on surfaces of metals and alloys, while at the same time maintaining these properties at high temperatures and increasing erosion resistance.

Boronising Applications Detail

Boronizing is applied industrially to iron-based alloys (except bearing steels containing aluminum and silicon, surface hardened, tempered, tool steels and stainless steels, cast steels, gray and spheroidal graphite cast irons, sintered iron and steels).

The high surface hardness and low surface friction coefficient of the boron layer; adhesion makes it resistant to wear mechanisms such as abrasion and surface fatigue in wear conditions.

  • The hardness of the boride layer is also stable at high temperatures.

  • Unlike other surface hardening processes, many steels are suitable for boronna.
  • Boronizing increases the corrosion-erosion resistance of ferrous materials in non-oxidizing dilute acids and alkaline environments. Thanks to the boriding process, it is possible to increase the resistance of low alloy steels against acids.
  • Boronized surfaces are moderately resistant to oxidation at high temperatures (850°C).
  • The resistance of the boride layer to molten metal melts is extremely high.
  • The fatigue life and service life of boronized structure are high in oxidizing and corrosive environments.
  • Boriding process reduces the coefficient of friction and minimizes the use of lubricants.