Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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Correlation of Microstructure and Tribological Properties of Mo Blended Fe-Base Coatings Fabricated by Atmospheric Plasma Spraying

대기 플라즈마 용사 공정에 의해 제조된 철계합금-몰리브덴 혼합 코팅층의 미세조직 및 내마모성

  • Lee, Illjoo (Division of Materials Science & Engineering, College of Engineering, Hanyang University) ;
  • Park, Hyungkwon (Division of Materials Science & Engineering, College of Engineering, Hanyang University) ;
  • Lee, Changhee (Division of Materials Science & Engineering, College of Engineering, Hanyang University)
  • 이일주 (한양대학교 신소재공학부) ;
  • 박형준 (한양대학교 신소재공학부) ;
  • 이창희 (한양대학교 신소재공학부)
  • Received : 2014.07.28
  • Accepted : 2014.10.21
  • Published : 2014.10.31
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Abstract

Atmospheric plasma spraying (APS) is world-widely used process in the automotive industry as a method to provide wear resistance coatings for engine cylinder bore, using various materials. The weight of engine blocks can be considerably decreased by removing cast iron liners, which can finally result in the improvement of fuel efficiency. In this study, five kinds of powder materials, 1.2C steel powder and 1.2C steel powder mixed with 5, 10, 15, 20 wt.%. molybdenum powder, were deposited by atmospheric plasma spraying in order to investigate the effect of molybdenum on the wear resistance of coatings. Microstructural analysis showed that molybdenum splats were well distributed in 1.2C steel matrix with intimate bonding. The molybdenum added coatings showed better tribological properties than 1.2C steel coating. However, above the 15 wt.%. blending fraction, wear resistance was somewhat degraded with poor roughness of worn surface due to the brittle fracture occurred in molybdenum splats. Consequently, compared to conventional liner material, gray cast iron, 10 wt. pct. molybdenum blended 1.2C steel coating showed much better tribological properties and therefore it looks very feasible to replace gray cast iron liner.

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References

  1. B. Gerard : Application of thermal spraying in the automobile industry, Sur. Coat. Technol., 201 (2006), 2028-2031 https://doi.org/10.1016/j.surfcoat.2006.04.050
  2. B. M Yang, E. S. Byon and K. C. Park : Wear Resistance Characteristics of Thermal Sprayed AlSiMg/ SiC Composite Coatings on Aluminum Engine Cylinder Bores, Journal of KWJS, 17-6 (1999), 62-69 (in Korean)
  3. E. H. Kim and S. I. Kwun : A Study on Wear Properties of Plasma Sprayed $Cr_{3}C_{2}-NiCr$ Coating at High Temperature, Journal of KWJS, 11-4 (1993), 91-102 (in Korean)
  4. B. Hwang, J. Ahn and S. Lee : Correlation of Microstructure and Wear Resistance of Ferrous Coatings Fabricated by Atmospheric Plasma Spraying, Metall. Mater. Trans. A., 33A (2002), 2933-2945
  5. A. Vencl, M. Mrdak and M. Banjac : Correlation of microstructures and tribological properties of ferrous coatings deposited by atmospheric plasma spraying on Al-Si cast alloy substrate, Metall. Mater. Trans. A., 40A (2009), 398-405
  6. W. J. Kim, J. G. Kim, Y. S. Kim, Ismail Ozdemir, and Y. Tsunekawa : Wear-Corrosion of Cast Iron Thermal Spray Coatings on Al Alloy for Automotive Components, MMI., 13-4 (2007), 323-327
  7. Y. Enomoto, T. Yamamoto, New materials in automotive tribology, Tribol. Lett., 5 (1998), 13-24 https://doi.org/10.1023/A:1019100531912
  8. K. Bobzin, F. Ernst, J. Zwick, T. Schlaefer, D. Cook, K. Nassenstein, A. Schwenk, F. Schreiber, T. Wenz, G. Flores and M. Hahn : Coating Bores of Light Metal Engine Blocks with a Nanocomposite Material using the Plasma Transferred Wire Arc Thermal Spray Process, J. Therm. Spray. Technol., 17 (2008), 344- 351 https://doi.org/10.1007/s11666-008-9188-y
  9. W.J. Kim, S.H. Ahn, H.G. Kim, J.G. Kim, Ismail Ozdemir and Y. Tsunekawa : Corrosion performance of plasma-sprayed cast iron coatings on aluminum alloy for automotive components, Sur. Coat. Technol., 200 (2005) 1162-1167 https://doi.org/10.1016/j.surfcoat.2005.02.220
  10. S. Uozato, K. Nakata and M. Ushio : Evaluation of ferrous powder thermal spray coatings on diesel engine cylinder bores, Sur. Coat. Technol., 200 (2005), 2580-2586 https://doi.org/10.1016/j.surfcoat.2005.05.042
  11. Y. Wang, C. Yao, G.C. Barber, B. Zhou and Q. Zou : Scuffing resistance of coated piston skirts run against cylinder bores, Wear., 259 (2005), 1041-1047 https://doi.org/10.1016/j.wear.2004.12.005
  12. M. Dienwiebel, K. Pohlmann and M. Scherge : Origins of the wear resistance of AlSi cylinder bore surfaces studies by surface analytical tools, Tribol. Int., 40 (2007), 1597-1602 https://doi.org/10.1016/j.triboint.2007.01.015
  13. A. Edrisy, T. Perry and A.T. Alpas : Investigation of scuffing damage in aluminum engines with thermal spray coatings, Wear., 259 (2005), 1056-1062 https://doi.org/10.1016/j.wear.2005.02.048
  14. V.D.N. Rao, D.M. Kabat, H.A. Cikanek, C.A. Fucinari, and G. Wuest : Materials systems for cylinder bore applications-Plasma spray technology, SAE. JAutomot. Eng., 1251 (1997), 107-132
  15. G. Barbezat : The state of the art of the internal plasma spraying on cylinder bore in AlSi cast alloys, Int. J. Automot. Techn., 2 (2001), 47-52
  16. K. Bobzin, F. Ernst, K. Richardt, T. Schlaefer, C. Verpoort, G. Flores : Thermal spraying of cylinder bores with the Plasma Transferred Wire Arc process, Sur. Coat. Technol., 202 (2008), 4438-4443 https://doi.org/10.1016/j.surfcoat.2008.04.023
  17. M. Hahna, R. Theissmann, B. Gleising, W. Dudzinski and A. Fischer : Microstructural alterations within thermal spray coatings during highly loaded diesel engine tests, Wear., 267 (2009), 916-924 https://doi.org/10.1016/j.wear.2008.12.109
  18. Nam P. Suh : The delamination theory of wear, Wear., 25 (1973), 111-124 https://doi.org/10.1016/0043-1648(73)90125-7
  19. S. F. Wayne, S. Sampath and V. Anand : Wear Mechanisms in Thermally-Sprayed Mo-Based Coatings, Tribol. T. 37 (1994), 636-640 https://doi.org/10.1080/10402009408983340
  20. B. Hwang, S. Lee and J. Ahn : Correlation of microstructure and wear resistance of molybdenum blend coatings fabricated by atmospheric plasma spraying, Mater. Sci. Eng., A366 (2004), 152
  21. S. Seireg : Friction and lubrication in mechanical design, 8-9, CRC Press (1998)
  22. B. Uyulgan, H. Cetinel, I. Ozdemir, C. Tekmen, S.C. Okumus and E. Celik : Friction and wear properties of Mo coatings on cast-iron substrates, Sur. Coat. Technol., 174 (2003), 1082-1088
  23. J. Ahn, B Hwang and S. Lee : Improvement of Wear Resistance of Plasma-Sprayed Molybdenum Blend Coatings, J. Therm. Spray. Technol., 14 (2005), 251-257 https://doi.org/10.1361/10599630523827