Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Fretting Wear Mechanisms of TiN Coated Nuclear Fuel Rod Cladding Tube

TiN 코팅한 핵연료봉 피복재의 프레팅 마멸기구

  • 김태형 (경북대학교 기계공학과 대학원) ;
  • 성지현 (경북대학교 기계공학과 대학원) ;
  • 김석삼 (경북대학교 기계공학부)
  • Published : 2001.12.01
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Abstract

The fretting wear of a nuclear fuel rod it a dangerous phenomenon. In this study, TiN coating was used to reduce the fretting wear of Zircaloy-4 tube, a nuclear fuel rod cladding material. TiN coating is probably one of the molt frequently and successfully used PVD coatings for the mitigation of fretting wear. The fretting tester was designed and manufactured for this experiment. The number of cycles, slip amplitude and normal load were selected as main factors of fretting wear. The results of this research showed that wear volume was improved 1.3∼3.2 times with TiN coating. The worn surfaces were observed by SEM. Wear mechanism at lower slip amplitude was the brittle cracks and rupture of TiN coating. However, adhesive and abrasive wear were mainly observed on most surfaces at higher slip amplitude.

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References

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