光電子放射測定による金属の初期酸化挙動の研究

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  • Study for Initial Oxidation Behavior of Metals by Photo-Electron Emission Measurement
  • コウデンシ ホウシャ ソクテイ ニ ヨル キンゾク ノ ショキ サンカ キョド

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The amount of photo-electron emittion is very sensitive to the material and it's surface status. The relation between the amount of photo-electron emission and oxidation was studied. As the results, it was found that there is good correlation between the reduction rate of photo-electron emission from the bare surface and the oxidation rate of materials. The reduction rate of photo-electron emission from the bare surface was dependent to the humidity in the air. A new defect can be detected by scanning the photo-electron sensor with X-Y stage. The time required for aluminium to reach the maximum exo-electron emission after the bare surface was formed, tmax, was independent the wave length of light. But tmax increased with decreasing air pressure.

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