A New Type of Self-lubricated Thermal Spray Coatings: Liquid Lubricants Embedded in a Metal Matrix

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• 作者：N. Espallargas (1)
  S. Armada (2)
  
  1. Tribology Lab ; Faculty of Engineering Science and Technology ; Department of Engineering Design and Materials ; Norwegian University of Science and Technology ; NTNU ; 7491 ; Trondheim ; Norway
  2. Tribology Lab ; SINTEF ; Materials and Chemistry ; 7465 ; Trondheim ; Norway
  
• 关键词：friction reduction ; liquid ; solid coatings ; lubricant release ; metal matrix ; self ; healing ; self ; lubricated coatings
• 刊名：Journal of Thermal Spray Technology
• 出版年：2015
• 出版时间：January 2015
• 年：2015
• 卷：24
• 期：1-2
• 页码：222-234
• 全文大小：3,093 KB
• 参考文献：1. S. Armada, R. Schmid, S. Equey, I. Fagoaga, and N. Espallargas, Liquid-Solid Self-lubricated Coatings, / J. Therm. Spray Technol., 2013, 22(1), p 10-17 CrossRef
  2. N. Espallargas, L. Vitoux, and S. Armada, The Wear and Lubrication Performance of Liquid-Solid Self-lubricated Coatings, Surface and Coatings Technology. In Press, Corrected Proof. doi:10.1016/j.surfcoat.2013.07.063
  3. C. DellaCorte and B.U. Edmonds, US Patent 5,866,518, 1999
  4. A. Borisova, Y. Borisov, A. Tunik, L. Adeeva, E. Lugscheider, and C. Herbst, Thermal Spraying of Coatings Containing Solid Lubricants. / Proceedings of the United Thermal Spray Conference, 1999, p 174-181
  5. U. M盲nnikk枚, A. M盲盲tt盲, P. Vuoristo, and T. M盲ntyl盲, Preparation of Powders and HVOF Sprayed Coatings for Improved Sliding Properties by Addition of Solid Lubricants. / Proceedings of the International Thermal Spray Conference, 2002, p 676-680
  6. Maintenance and OSH鈥擜 statistical picture. Report from the European Agency for Saftety and Health at Work. http://osha.europa.eu/en/publications/factsheets/90
  7. S.R. White, N.R. Sottos, P.H. Geubelle, J.S. Moore, M.R. Kessler, S.R. Sriram, E.N. Brown, and S. Viswanathan, Autonomic Healing of Polymer Composites, / Nature, 2001, 409, p 794-797 CrossRef
  8. R.P. Wool, Self Healing Materials: A Review, / Soft Matter, 2008, 4, p 400-418 CrossRef
  9. M.R. Kessler, Self-healing: A New Paradigm in Materials Design, / Proc. Inst. Mech. Eng. G, 2007, 221(4), p 479-495 CrossRef
  10. P. Patel, A Metal Coating That Repairs Itself, MIT Technology Review, News and Analysis, August 10, 2009
  11. N. Espallargas and S. Armada, Self-lubricated Coatings Obtained by Thermal Spray Methods, Patent number WO 2013/058660
  12. H. Johnsen and R.B. Schmid, Preparation of Polyurethane Nanocapsules by Miniemulsion Polyaddition, / J. Microencapsul., 2007, 24(8), p 731-742 CrossRef
  13. G.W. Stachowiak and A.W. Batchelor, / Engineering Tribology, 3rd ed., Butterworth-Heinemann, Dordrecht, 2006, ISBN 978-0-7506-7836-0
  14. L. Pawlowski, / The Science and Engineering of Thermal Spray Coatings, Wiley, Chichester, 1995 (414 pp)ISBN 0-47-159253-2
  15. W.D. Callister, / Materials Science and Engineering, SI Version, 8th ed., Wiley, New York, 2010
  16. F. Cardarelli, / Materials Handbook, 2nd ed., Springer, London, 2005
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Surfaces and Interfaces and Thin Films
  Tribology, Corrosion and Coatings
  Materials Science
  Characterization and Evaluation Materials
  Operating Procedures and Materials Treatment
  Analytical Chemistry
  
• 出版者：Springer Boston
• ISSN：1544-1016

文摘

Oils and greases are commonly used for lubricating, rotating and sliding systems such as bearings, gears, connectors, etc. The maintenance of such lubricated systems in some applications where access is difficult (e.g., offshore wind farms and subsea equipment) increases the operational costs. In some cases, it can be thought that the use of solid lubricants (MoS2, PTFE, graphite, etc.) embedded in coatings could be a solution for such applications; however, the mechanical and dynamic conditions of most of the systems are not appropriate for solid lubricants. Despite this, solid lubricants such as PTFE and MoS2 have been largely employed in different industries, especially in those applications where liquid lubricants cannot be used and when the dynamic conditions allow for it. Self-lubricated coatings have been a major topic of interest in thermal spray in the last decades. Although the use of liquid lubricants is desirable whenever it is possible, limited research has been addressed toward the development of self-lubricated coatings containing liquid lubricants. One of the main reasons for this is due to the complexity of embedding liquid lubricant reservoirs inside the coating matrix. In the present work, a new type of liquid-solid self-lubricated coatings is presented, being the matrix a metal alloy. Three thermal spray techniques used were as follows: arc-spray, plasma spray, and HVOAF. The metal matrices were two stainless steel types and liquid lubricant-filled capsules with different liquid contents were used. No degradation of the capsules during spraying was observed and the coatings containing capsules were able to keep a low coefficient of friction. The optimal performance is found for the coatings obtained at the lowest spraying temperature and velocity.