Tribology and Lubricants

  • 제25권4호
  • /
  • Pages.250-255
  • /
  • 2009
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  • 2713-8011(pISSN)
  • /
  • 2713-802X(eISSN)
한국트라이볼로지학회 (Korean Tribology Society)
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지르코늄 합금 튜브의 산화와 프레팅 마멸 특성

Oxidation and Fretting Wear Characteristics of Zirconium Alloy Tubes

  • 정일섭 (영남대학교 기계공학부) ;
  • 이호성 (경북대학교 신소재공학부) ;
  • 이명호 (영남대학교 기계공학부)
  • Chung, Il-Sup (School of Mechanical Engineering, Yeungnam University) ;
  • Lee, Ho-Seong (Materials Science and Metallurgical Engineering, Kyungpook University) ;
  • Lee, Myung-Ho (School of Mechanical Engineering, Yeungnam University)
  • 발행 : 2009.08.31
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초록

Oxidation characteristics of Zirlo and Zircaloy-4 tubes, which are widely used as nuclear power fuel cladding, are studied in steam environment up to $1200^{\circ}C$. Oxidation resistances are compared in terms of the mass increase due to the absorption of oxygen. The evolution of microscopic structure accompanied with the oxidation process is investigated. Also, the influence of oxidation on the fretting wear characteristics of the tubes is studied. Piezo-electrically actuated rig is employed to fret the tubes with cross-contacting arrangement. Wear scar is observed and measured, by using microscopes and a 3D-profiler. The results of fretting wear are quantified in terms of scar size, wear volume and wear coefficient, and compared for the three different tube materials of oxidated Zirlo, virgin Zirlo and Zircaloy-4.

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참고문헌

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