METHOD AND APPARATUS FOR IONIC TREATMENT OF PIECES SURFACE Russian patent published in 1996 - IPC

FIELD: hardening and modification of pieces surface, method of pieces surface ionic treatment and apparatus for its realization. SUBSTANCE: method provides, that treated piece is using holder located in vacuum chamber, that is filled with operational gas under pressure of 0.02 - 500 Pa. Negative pulsed voltage in range of 5 to 100 kV is through high-voltage input applied to treated piece. Chamber also has electrode joint mounted in front of treated part of piece, to which negative voltage lower than negative voltage fed to the piece, is fed to the electrode joint. EFFECT: improved quality of piece surface treatment. 12 cl, 7 dwg