TRIODE PROCESS FOR CATHODE-PLASMA NITRIDING OF APERTURED PARTS

摘要

FIELD: heat and chemical treatment, namely ionic nitriding processes.;SUBSTANCE: method comprises steps of nitriding at low pressure and at voltage bias created between part and hot electrode. Rotating magnetic field is created around vacuum chamber. Amplitude value of rotating magnetic field density is determined according to given relation where m - mass of positive ion; U -negative potential fed to treated part relative to housing of vacuum chamber; q - charge of positive ion; &phis;_cr - critical incline angle of positive ion relative to treated surface; d -minimum diameter of part opening; B - amplitude value of density of rotating magnetic field. In concrete variants of invention rotating magnetic field is created due to alternatively turning it on in horizontal and in vertical directions.;EFFECT: enhanced operational properties of complex-configuration parts due to uniform nitriding of them.;2 cl, 2 dwg