DOI QR코드

DOI QR Code

Cu-TiB2 복합재료의 마모거동에 따른 미세조직 관찰

Observation on the Microstructures of Cu-TiB2 Composites with Wear Behavior

  • 이태우 (서울산업대학교 신소재공학과) ;
  • 강계명 (서울산업대학교 신소재공학과)
  • Lee, Tae-Woo (Department of Materials Science and Engineering, Seoul National University of Technology) ;
  • Kang, Kae-Myung (Department of Materials Science and Engineering, Seoul National University of Technology)
  • 발행 : 2006.08.27

초록

The dispersion hardened $Cu-TiB_2$ composites are a promising candidate for applications as electrical contact materials. The $Cu-TiB_2$ composites for electrical contact materials can reduce material cost and resource consumption caused by wear, due to their good mechanical and electrical properties. In this study, we investigated the wear phenomenon for $Cu-TiB_2$ composites fabricated with hot extrusion, by varying particle sizes and volume fractions of $TiB_2$. The wear tests were performed under the dry sliding condition with a fixed total sliding distance of 40 m. The contact loads at a constant speed of 3.5 Hz were 20, 40, 60, and 80 N. The friction coefficients and wear losses were measured during wear tests. Worn surfaces and wear debris after wear tests were investigated using the scanning electron microscope and the optical microscope. The microstructures of interface between Cu matrix and $TiB_2$ particle before and after wear tests were studied by the transmission electron microscope.

키워드

참고문헌

  1. S. C. Tjong and K. C. Lau, Materials Science and Engineering, A282, 183 (2000) https://doi.org/10.1016/S0921-5093(99)00752-2
  2. Y. Hiraoka, H. Hanado and T. Inoue, Refractory Metals & Hard Materials, 22, 87 (2004) https://doi.org/10.1016/j.ijrmhm.2004.01.002
  3. L. Lu, L. B. Wang, B. Z. Ding and K. Lu, Materials Science and Engineering, A286, 125 (2000) https://doi.org/10.1016/S0921-5093(00)00712-7
  4. K. L. Johnson, Wear, 190, 162 (1995) https://doi.org/10.1016/0043-1648(95)06665-9
  5. X. L. Kong, Y. B. Liu and L. J. Qiao, Wear, 256, 747 (2004) https://doi.org/10.1016/S0043-1648(03)00528-3
  6. G. Straffelini, L. Maines, M. Pellizzari and P. Scardi, Wear, 259, 506 (2005) https://doi.org/10.1016/j.wear.2004.11.013
  7. Q. XU. X. Zhang, J. Han, X. He and V. L. Kvanin, Materials Letters, 57, 4439 (2003) https://doi.org/10.1016/S0167-577X(03)00338-0
  8. J. N. Kim, J. U. Choi and K. M. Kang. Korea Journal of Materials Research, 15(1), 61 (2005) https://doi.org/10.3740/MRSK.2005.15.1.061
  9. T. W. Lee, K. M. Kang and J. U. Choi, Korean J. of Materials research, 15(12), 824 (2005) https://doi.org/10.3740/MRSK.2005.15.12.824
  10. S. C. Tjong and K. C. Lau, Materials Letters, 41, 153 (1999) https://doi.org/10.1016/S0167-577X(99)00123-8
  11. A. T. Alpas, Metall., Trans., 25A. pp.969 (1994) https://doi.org/10.1007/BF02652272
  12. Z. F. Zhang, L. C. Zhang and Y. W. Mai, J. Mater. Sci., 30, 1967 (1995) https://doi.org/10.1007/BF00353019
  13. K. M. Kang, J. T. Song, Wear, 140, 119 (1990) https://doi.org/10.1016/0043-1648(90)90126-U
  14. K. Han and K. Yu-Zhang, Scripta Materialia, 50, 781 (2004) https://doi.org/10.1016/j.scriptamat.2003.11.046
  15. W. Wang, Z. Fu, H. Wang amd R. Yuan, Journal of the European Ceramic Society, 22, 1045 (2002) https://doi.org/10.1016/S0955-2219(01)00424-1
  16. J-L. Liu, E-D. Wang, Z-Y. Liu, L-X. Hu and W-B. Fang, Materials Science and Engineering A382, 301 (2004) https://doi.org/10.1016/j.msea.2004.04.074