Method of treatment of metal surfaces, the plasma for protection against abrasive wear and detachment layer, as well as the permeation of hydrogen ions

摘要

The present invention relates to a method against hydrogen embrittlement of metallic parts in the presence of ions of hydrogen, hydrogen sulphide, carbon dioxide gas or carbonic acid.More specifically to a method for the formation of the protective layer against hydrogen embrittlement of metallic parts.Equipment and pipes used in the oil and gas industry by means of surface treatment, physical and chemical plasmaAnd in guiding ions and active species of atomic and molecular nitrogen to the surface of the material by the application of a DDP between two electrodes.Interrupted periodically with a predetermined frequency, forming a compressive stress, and a protective layer with high hardness and resistant to abrasive wear, fatigue, the degradation.Erosion and corrosion caused by fluid with the presence of hydrogen sulphide, carbon dioxide, carbon monoxide gas, water vapour and sulphur compounds, solutions of calcium carbonate and sodium chloride.