短パルスレーザ照射による表面改質とそのトライボロジー特性の改善

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タイトル別名
  • Surface modification of metal surface using pico-second laser irradiation and investigation of its tribological properties
  • （日本機械学会指定テンプレートファイル利用について）

抄録

<p>To implement the cutting and surface modification in one machining process, we proposed a surface modification technique with a compact short pulse laser, which could be easily mounted onto the machining tool. With the local active space produced by the laser and the cutting oil as the carbon source, a hard metal-carbide formed on the metal workpiece is expected. Herein, the laser irradiation experiment was conducted with a pico-second laser on a titanium alloy disk in PAO. Results showed that the hardness of irradiated area significantly increased, and the formation of titanium carbide was confirmed with XRD. In the reciprocating friction test, the irradiation part showed improved wear resistance and lower friction with the increase of effective irradiated laser pulses.</p>

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