Abstract
The crystal preferred orientation of zinc oxide (ZnO) coatings on stainless steel substrates was precisely controlled by a combinatorial sputter-coating system. ZnO coatings were analyzed by X-ray diffraction spectroscopy, and surface and interfacial cutting analysis methods. The frictional properties of the coatings in a vacuum, the atmosphere, oil of n-hexadecane, and oil doped with palmitic acid molecules were observed. Different frictional behaviors of the ZnO coatings were observed by varying the crystal preferred orientation. A low-friction coefficient as less as 0.2 was realized by ZnO coatings with uni- and multi-crystal orientation in all of those conditions. Inverse proportion of the friction coefficient to normal load was observed on ZnO coatings with bi-orientation of (002) and (103) in pure and palmitic acid doped oil.
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References
Holmberg, K., Matthews, A.: Coating Tribology. Elsevier Science, Amsterdam (1994)
Prasad, S.V., Walck, S.D., Zabinski, J.S.: Microstructural evolution in lubricious ZnO films grown by pulsed laser deposition. Thin Solid Films 360, 107–117 (2000)
Prasad, S.V., Nainaparampil, J.J., Zabinski, J.S.: Lubricious zinc oxide films grown by pulsed laser deposition: lateral force microscopy of wear surface. J. Mater. Sci. Lett. 19, 1979–1981 (2000)
Prasad, S.V., Zabinski, J.S.: Tribological behavior of nanocrystalline zinc oxide films. Wear 203, 498–506 (1997)
Zabinski, J.S., Sanders, J.H., Nainaparampil, J., Prasad, S.V.: Lubrication using a microstructurally engineered oxide: performance and mechanisms. Tribol. Lett. 8, 103–116 (2000)
Zabinski, J.S., Corneille, J., Prasad, S.V.: Lubricious zinc oxide films: synthesis, characterization and tribological behaviour. J. Mater. Sci. 32, 5313–5319 (1997)
Goto, M., Kasahara, A., Konishi, Y., Oishi, T., Tosa, M., Yoshihara, K.: Frictional property of zinc oxide coating films observed by lateral force microscopy. Jpn. J. Appl. Phys. 42, 4834–4836 (2003)
Goto, M., Kasahara, A., Tosa, M.: Reduction in frictional force of ZnO coatings in a vacuum. Jpn. J. Appl. Phys. 47, 8914–8916 (2008)
Goto, M., Kasahara, A., Tosa, M.: Low frictional property of copper oxide thin films optimised using a combinatorial sputter coating system. Appl. Surf. Sci. 252, 2482–2487 (2006)
Atom Work: Inorganic Material Database http://crystdb.nims.go.jp/index_en.html
Saito, F., Nishiyama, I., Hyodo, T.: Application of nano-cutting for mechanical characterization of materials. Mater. Lett. 63, 2257–2259 (2009)
Goto, M., Kasahara, A., Tosa, M., Hobley, J., Yoshihara, K., Fukumura, H.: Lubricative coatings of copper oxide for aerospace applications. J. Vac. Sci. Technol. A 20, 1458–1461 (2002)
Scherrer, P.: Bestimmung der Grösse und der inneren Struktur von Kolloidteilchen mittels Röntgenstrahlen. Nachr. Ges. Wiss. Göttingen 26, 98 (1918)
Singer, I.L., Bloster, R.N., Wegand, J., Fayeulle, S.: Hertzian stress contribution to low friction behavior of thin MoS coatings. Appl. Phys. Lett. 57, 995–997 (1990)
Acknowledgment
The present work was supported by a Grant-in-Aid for Scientific Research (A) (21246030) from the Ministry of Education, Culture, Sports, Science and Technology, Japan.
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Goto, M., Kasahara, A. & Tosa, M. Low-Friction Coatings of Zinc Oxide Synthesized by Optimization of Crystal Preferred Orientation. Tribol Lett 43, 155–162 (2011). https://doi.org/10.1007/s11249-011-9792-8
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DOI: https://doi.org/10.1007/s11249-011-9792-8