Boronizing agent in paste form

Details Boronizing agent in paste form Boronizing agent in paste form

C - Chemistry, Metallurgy

23

C

C23C 8/68 (2006.01) C23C 8/70 (2006.01)

Patent

CA 2298046

This invention relates to a boronizing agent in the form of a paste for the production of boride layers on metallic workpieces, which boronizing agent comprises boron-releasing substances, activating substances, and the remainder of inert refractory extenders together with water, and optionally, auxiliaries required for paste formulation. It also contains as additives: (a) at least one compound from the group of alkali metal and alkaline earth metal carbonates; (b) at least one compound from the group of alkali metal and alkaline earth metal nitrites; (c) at least one compound from the group of water-soluble alkali metal and alkaline earth metal borates. This boronizing paste causes no corrosive attack on the component surface and exhibits improved storage stability. The agent gives rise to reduced fluorine or fluoride emissions. The boronizing agent may be removed in a simple manner. Single-phase boride layers containing Fe2B may in particular be produced on workpieces made from ferrous material.

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