Effect of ZrH2 Doping on Electron Emission Performance of Rare Earth Tungsten Electrode

In order to explore the effect of ZrH2 on electron emission performance rare earth tungsten electrodes (W-La-Y), different proportions were added in this study, and samples three obtained by ball milling vacuum hot-pressing sintering. The performance, phase evolution surface valence state analyzed, respectively. test results electrode show that increasing mass fraction range 0% 0.1% can continuously improve performance. At 1600 °C, increase zero-field current density from 0.36 0.90 A/cm2. X-ray diffraction (XRD), comprehensive thermalgravimetric differential thermal analysis (TG-DTA) photoelectron spectroscopy (XPS) showed ZH2 would react with impurity oxygen consume oxygen, thus reducing inhibitory improving its