| abstract |
In view of the foregoing and for the purpose of solving the limitations found, it is the object of the invention to offer a method of plasma heat treatment of an austenitic stainless steel, which comprises the stage of plasma heat treatment in a range of temperature of 370 ° C to 430 ° C, for a time of 0.5 to 1 hr., at a pressure of between 100 to 500 Pa, in a gaseous atmosphere of Low Pressure Oxygen and Hydrogen, at a current density of between 0.5 at 1.5 mA / cm2, which promotes the formation of a superficial austenite layer consisting of hematite and magnetite iron oxides. |