INFLUENCE OF DIFFERENT TYPES OF HYDROGEN TREATMENT ON HYDROGEN RETENTION AND RELEASE FROM 12Kh18N10T STEEL

Hydrogen outgassing from stainless steel was investigated after sample treatment by different plasmas: VHF/RF pulse discharges during wall conditioning in the Uragan-2M torsatron, with RF pulse plasma heating regime in Uragan-2M, with steady state plasma of magnetron type discharges in DSM-1 device, with pulse plasma in the plasma accelerator QSPA Kh-50. For comparison the rate of hydrogen release from SS samples was measured after their saturation in molecular hydrogen gas at the low pressure of similar to 10(-2) Ton at the room temperature. The measurements of hydrogen release rate were carried out with thermal desorption method and mass-spectrometry. It was observed the significant differences in hydrogen outgassing behavior for samples treated with different hydrogen plasma. The possible reasons of distinctions in kinetics of hydrogen interaction with stainless steel are discussed.