TiN coating etching from a surface of the instrument in beam-plasma system

Abstract

The results of reactive ion-plasma etching of TiN coatings from a surface of the tool in a beam-plasma system are submitted. The researches were made on the industrial set-up of a type «the Plasma boiler» with a magnetic field of the plug configuration. The electron guns on the basis of magnetron discharge injected from magnetic plug in a magnetic trap volume oncoming electron beams with a current density up to 2 A/cm², energy 350÷550eV. At pressure 1.10⁻³ ÷ 5.10⁻³ Torr in a magnetic trap the beam-plasma discharge was fired from which one crosswise magnetic fields an ion flow on items was extracted. As working gases the mixture Ar and CF₄ were used. The given beam-plasma system allowed selectively to remove from a surface of the tools TiN coating at speed of etching 1÷2 µm/h on the area of 12000cm².