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온도 상승이 개량형 핵연료 피복관과 지지격자 사이의 프레팅 마멸에 미치는 영향

Influence of Temperature on the Fretting Wear of Advanced Nuclear Fuel Cladding Tube against Supporting Grid

  • 이영제 (성균관대학교 기계공학부) ;
  • 박용창 (성균관대학교 대학원 기계공학과) ;
  • 정성훈 (성균관대학교 대학원 기계공학과) ;
  • 김진선 (성균관대학교 대학원 기계공학과) ;
  • 김용환 (한전원자력연료주식회사)
  • Lee Young-Ze (School of Mechanical Engineering, Sungkyunkwan University) ;
  • Park Yong-Chang (Graduate School of Mechanical Engineering, Sungkyunkwan University) ;
  • Jeong Sung-Hoon (Graduate School of Mechanical Engineering, Sungkyunkwan University) ;
  • Kim Jin-Seon (Graduate School of Mechanical Engineering, Sungkyunkwan University) ;
  • Kim Yong-Hwan (Fuel Technology Center, Korea Nuclear Fuel Co.)
  • 발행 : 2006.06.01

초록

The experimental investigation was performed to find the associated changes in characteristics of fretting wear with various water temperatures. The fretting wear tests were carried out using the zirconium alloy tubes and the grids with increasing the water temperature. The tube materials in water of $20^{\circ}C,\;50^{\circ}C\;and\;80^{\circ}C$ were tested with the applied load of 20 N and the relative amplitude of $200{\mu}m$. The worn surfaces were observed by SEM, EDX analysis and 2D surface profiler. As the water temperature increased, the wear volume was decreased, but oxide layer was increased on the worn surface. The abrasive wear mechanism was observed at water temperature of $20^{\circ}C$ and adhesive wear mechanism occurred at water temperature of $50^{\circ}C,\;80^{\circ}C$. As the water temperature increased, surface micro-hardness was decreased, but wear depth and wear width were decreased due to increasing stick phenomenon. Stick regime occurred due to the formation of oxide layer on the worn surface with increasing water temperatures

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참고문헌

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