KSTLE International Journal

한국트라이볼로지학회 (Korean Tribology Society)
권호 표지

Sliding Wear Characteristics of plasma Sprayed $8\%Y_{2}O_3-ZrO_2$ Coating for Post-spray Heat Treatment

  • Chae Young-Hun (Engineering Tribology Research Institute, Kyungpook National University) ;
  • Kim Seock-Sam (Department of Mechanical Engineering, Kyungpook National University)
  • 발행 : 2005.12.01
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초록

Plasma ceramic spray that is applied on a machine part under severe work conditions has been investigated for tribological behavior. The application of ceramic coatings by plasma spray has become essential in tribosystems to produce wear resistance and long life in severe conditions. The purpose of this study was to investigate the wear characteristics of $8\%Y_{2}O_3-ZrO_2$ coating, in view of the effect of post-spay heat treatment. The plasma-sprayed $8\%Y_{2}O_3-ZrO_2$ coating was studied to know the relationship between phase transformations and wear behavior related to post-spray heat treatment. Wear test was carried out with ball on disk type on normal loads of 50N,70N and 90N under room temperature. The phase transformation of phase and the value of residual stress were measured by X-ray diffraction method(XRD). Tribological characteristics and wear mechanisms of coatings were observed by SEM. The tribological wear performance was discussed in the focusing of residual stress. Consequently, post-spray heat treatment plays an important role in decreasing residual stress. Residual stress in the coating system has a significant influence on the wear mechanism of coating.

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참고문헌

  1. A. Levy and S. Macadam, The behavior of ceramic thermal barrier coatings on diesel engine combustion zone components, Surface Coating s Technology, 30(1987), pp. 51-61 https://doi.org/10.1016/0257-8972(87)90007-7
  2. B. Wang, Z. Shui and A. Levy, Sliding wear of thermallysprayed chromia coatings, Wear, 138(1990), pp. 93-110 https://doi.org/10.1016/0043-1648(90)90170-F
  3. Y.H. Chae and S.S. Kim, Evaluation of wear characteristics for $Al_2O_3-40%TiO_2$ sprayed on casted aluminum alloy, J of the KSTLE(Korea), vol. 15(1999), pp. 183
  4. Y.H. Chae and S.S. Kim, Sliding wear behavior of ceramic plasma sprayed on casting aluminum alloy against SiC ball, Tribology letters, vol. 8(2000), pp. 35 https://doi.org/10.1023/A:1019110512715
  5. Y. Wang, Y. Jin and S. Wen, The analysis of the chemical structure and properties of ceramic surface films in friction using SEM, AES and Micro-region X-ray diffraction, Wear, vol. 128(1988), pp. 277 https://doi.org/10.1016/0043-1648(88)90064-6
  6. S.J. Bull, R. Kingswell and K.T. Scott, The sliding wear of plasma sprayed alumina, Surface Coatings Technology, 82(1996), pp. 218 https://doi.org/10.1016/0257-8972(95)02641-X
  7. H.S. Ahn and O.K. Kwon, Wear behaviour of plasma-sprayed partially stabilized zirconia on a steel substrate, Wear 162-164(1993), pp. 636-644 https://doi.org/10.1016/0043-1648(93)90556-2
  8. H.S. Ahn, J.Y. Kim and D.S. Lim, Tribological behaviour of plasma sprayed ceramic coating for the application to the cylinder liner in engines, Korea Soc. Automotive Eng., 1(1993), pp.89-102
  9. J.Y. Kim, D.S. Lim and H.S. Ahn, High temperature wear of plasma sprayed $ZrO_2-Y_2O_3$ coatings, J. Korea Ceram. Soc., 30(1993), pp.1059-1065
  10. Y. Wang, Y. Jin and S. Wen, The analysis of the friction and wear mechanisms of plasma-sprayed ceramic coating at $450^{\circ}C$, Wear 128(1988), pp.265-276 https://doi.org/10.1016/0043-1648(88)90063-4
  11. Y.H. Chae and S.S. Kim, Tribological performance of $Al_2O_3$/NiCr coating, International J. of KSME, (2001), pp
  12. U. Wiklund, J. Gunnars, S. Hogmark, Influence of residual stresses on fracture and delamination of thin hard coatings, Wear, 232(1999), pp.262-269 https://doi.org/10.1016/S0043-1648(99)00155-6
  13. T. Sato, S. Ohtaki and M. Shimada, Transformation of yttriapartially stabilized zirconia by low-temperature annealing in Air, J. Material Science, 20(1985), pp.1466-1470 https://doi.org/10.1007/BF01026344