Abstract
Alumina matrix composites reinforced with carbon nanotubes (CNTs) fabricated by CNT purification, mixing, compaction, and sintering processes, and the effects of the CNT addition on wear resistance were investigated in relation to the relative density, hardness, and fracture toughness. Wear resistance and fracture toughness were measured by the dry sliding wear test method and the indentation fracture test method, respectively. Zero to ~3 vol pct of CNTs were homogeneously distributed in the composites, although some pores existed. The wear resistance and fracture toughness increased with an increasing CNT fraction, but the composite specimen containing 3.0 vol pct of CNTs hardly showed an increase over the specimen containing 2.25 vol pct of CNTs. Observations of worn surfaces revealed that the wear mechanism involved both the abrasive and delamination wear modes in the specimens containing 0 to ~0.75 vol pct of CNTs, whereas the surface was worn largely in an abrasive wear mode in the specimens containing 1.5 to ~3.0 vol pct of CNTs. This was because CNTs helped to change the delamination wear mode to the abrasive wear mode by preventing crack initiation and propagation at alumina grains. The fracture toughness increase provided beneficial effects in the resistance to crack initiation and propagation, the reduction in delamination wear on the worn surface, and the consequent improvement in wear resistance. Because the effect of the porosity increase due to the CNT addition unfavorably affected the improvement of wear resistance and fracture toughness in the specimen containing 3.0 vol pct of CNTs, the appropriate level of CNT fraction was 1.5 to ~2.25 vol pct.
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R.H. Baughman, A.A. Zakhidov, and W.A. de Heer: Science, 2002, vol. 297, pp. 787–92.
H. Zhang, Y. Chen, S.-S. Kim, and Y.-S. Lim: Met. Mater. Int., 2008, vol. 14, pp. 269–73.
Y. Chen, D.-H. Riu, and Y.-S. Lim: Met. Mater. Int., 2008, vol. 14, pp. 385–90.
M.R. Falvo and G.J. Clary: Nature, 1997, vol. 389, pp. 582–84.
P.M. Ajayan, L.S. Schadler, C. Giannaris, and A. Rubio: Adv. Mater., 2000, vol. 12, pp. 750–53.
L. Xu, B.W. Wei, R.X. Ma, J. Liang, X.K. Ma, and D.H. Wu: Carbon, 1999, vol. 37, pp. 855–58.
A. Peigney, Ch. Laurent, E. Flahaut, and A. Rousset: Ceram. Int., 2000, vol. 26, pp. 677–83.
J.W. An, D.H. You, and D.S. Lim: Wear, 2003, vol. 255, pp. 677–81.
D.S. Lim, D.H You, H.J. Choi, S.H. Lim, and H. Jang: Wear, 2005, vol. 259, pp. 539–44.
C.B. Mo, S.I. Cha, K.T. Kim, K.H. Lee, and S.H. Hong: Mater. Sci. Eng., A, 2005, vol. 395, pp. 124–28.
W.A. Curtin and B.W. Sheldon: Mater. Today, 2004, vol. 7, pp. 44–49.
R.W. Siegel, S.K. Chang, B.J. Ash, J. Stone, P.M. Ajayan, R.W. Doremus, and L.S. Schadler: Scripta Mater., 2001, vol. 44, pp. 2061–64.
A. Peigney, Ch. Laurent, O. Dumortier, and A. Rousset: J. Eur. Ceram. Soc., 1998, vol. 18, pp. 1995–2004.
G. Yamamoto, M. Omori, K. Yokomizo, T. Hashida, and K. Adachi: Mater. Sci. Eng., B, 2008, vol. 148, pp. 265–69.
H.H.K. Xu and S. Jahanmir: Wear, 1996, vol. 192, pp. 228–32.
K. Wang, X.-D. Du, K.-T. Youn, Y. Hayashi, C.G. Lee, and B.H. Koo: Met. Mater. Int., 2008, vol. 14, pp. 689–93.
J. Sedlacek, D. Galussek, P. Svancarek, R. Riedel, A. Atkinson, and X. Wang: J. Eur. Ceram. Soc., 2008, vol. 28, pp. 2983–93.
N. Zhao, C. He, J. Li, Z. Jiang, and Y. Li: Mater. Res. Bull., 2006, vol. 41, pp. 2204–09.
G.R. Anstis, P. Chantikul, B.R. Lawn, and D.B. Marshall: J. Am. Ceram. Soc., 1981, vol. 64, pp. 533–38.
“ASTM G99: Standard Test Method for Wear Testing with a Pin-on-Disk Apparatus,” Annual Book of ASTM Standards, ASTM, West Conshohocken, PA, 1993, vol. 03.02, pp. 399–403.
M. Hashimoto, H. Takigawa, and T. Kawakami: 37th MWSP Conf. Proc., ISS, Warrendale, PA, 1996, pp. 275–82.
N.P. Padture and W.A. Curtin: Scripta Mater., 2008, vol. 58, pp. 989–90.
D. Jiang and A.K. Mukherjee: Scripta Mater., 2008, vol. 58, pp. 991–93.
D.A. Rigney: Proceeding of ASM Materials Science Seminar, Pittsburgh, PA, ASM International N.V., Almere, Netherlands, 1981, pp. 13–118.
ASM Handbook, vol. 18, Friction, Lubrication, and Wear Technology, ASM INTERNATIONAL, Materials Park, OH, 1992, pp. 175–263.
H.W. Jin, C.G. Park, and M.C. Kim: Scripta Mater., 1999, vol. 41, pp. 589–95.
B. Hwang, J. Ahn, and S. Lee: Metall. Mater. Trans. A, 2001, vol. 33A, pp. 2933–45.
J.-M. Jang, S.-J. Park, G. Choi, T.-Y. Kwon, and K.-H. Kim: Met. Mater. Int., 2008, vol. 14, pp. 457–63.
C.P. Dogan and J.A. Hawk: Wear, 1997, vol. 212, pp. 110–18.
D. Holz, R. Janssen, K. Friedrich, and N. Claussen: J. Eur. Ceram. Soc., 1989, vol. 5, pp. 229–32.
L. Fang, Y. Gao, S. Si, and Q. Zhou: Wear, 1997, vol. 210, pp. 145–50.
B.K. Prasad: Mater. Sci. Eng., A., 2007, vol. 456, pp. 373–85.
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This work was supported by a grant-in-aid for the National Core Research Center Program, Pusan National University, Pusan, Korea (No. R15-2006-022-01001-0) funded by the Korea Science and Engineering Foundation (KOSEF), Daejeon, Korea and the Korean Ministry of Education, Science, and Technology, and for the National Research Laboratory Program, Pohang University of Science and Technology, Pohang, Korea (No. ROA-2004-000-10361-0), funded by the KOSEF.
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Manuscript submitted May 7, 2009.
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Kim, S.W., Chung, W.S., Sohn, KS. et al. Improvement of Wear Resistance in Alumina Matrix Composites Reinforced with Carbon Nanotubes. Metall Mater Trans A 41, 380–388 (2010). https://doi.org/10.1007/s11661-009-0136-3
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DOI: https://doi.org/10.1007/s11661-009-0136-3