Surface topography of non-operated slide journal micro-bearings

• Autorzy: Czaban A. , Miszczak A.
• Języki publikacji: EN

Abstrakty

EN

In this paper authors present results of measurements of slide journal bearings surface topography measured with an atomic force microscope (AFM). The results of measurements of surface topography were presented in the form of surface topography maps, three-dimensional graphs and some examples of selected cross-sections of investigated surface in the form of profile graphs. Measurements of surface topography were made for journals and sleeves of slide journal micro-bearings from personal computers' hard drives and fans, with the Atomic Force Microscope NT-206 produced in MTM in Minsk, Republic of Belarus. The values of profile roughness parameters Ra and Rq and the distance between maximum peak height and maximum valley depth are presented as well. The application SurfaceXplorerŽ was used for processing and visualization of the data obtained from AFM NT-206, which besides from generating 2D, 3D and profile diagrams, was used to calculate and draw graph of height distribution. Surface pictures of investigated bearings sleeves were made with the optical microscope Zeiss Axiovert 25+. That measurements give information about micro-grooves dimensions and location. On the surfaces of studied micro-bearings some micro-grooves can be found in form of herringbone, with depth about 1.5mi m and width 150/mi m. Received information about micro-grooves geometry will allow to develop proper theory of hydrodynamic lubrication for micro-bearings with micro-grooves. Topography of surfaces of investigated journal micro-bearings will be reconsidered after exploiting them proper amount of time.

Słowa kluczowe

EN

atomic force microscope; surface topography; microgrooves; herringbone grooves; micro-bearing

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2011
• Tom: Vol. 18, No. 2
• Strony: 109--115
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Czaban A.

autor

Miszczak A.

• Gdynia Maritime University, Faculty of Marine Engineering Morska Street 83, PL 81 225 Gdynia, Poland phone: [phone],

Bibliografia

• [1] Asada, T., Saito, H., Asaida, Y., Itoh, K., Design of hydrodynamic bearing for height-speed HDD. Microsystem Technologies, 8, pp. 220-226, 2002.
• [2] Chizhik, S., Khudoley, A., Kuznetsova, T., Wierzcholski, K., Miszczak, A., Micro and Nanoscale Wear Studies of HDD Slide Bearings By Atomic Force Microscopy. Proceedings of Methodological Aspects of Scanning Probe Microscopy, Heat and Mass Transfer Institute of NAS, pp. 247-252, Minsk 2010.
• [3] Gururajan, K., Prakash, J., Surface Roughness Effects in Infinitely Long Porous Journal Bearings. Transactions of the ASME, Journal of Tribology, Vol. 121, pp. 139-147, 1999.
• [4] Jang, G. H., Lee, S. H., Kim, H. W., Kim, C.S., Dynamic analysis of a HDD spindle system with FDBs due to the bearing width and asymmetric grooves of journal bearing, Microsystems Technologies, 11, pp. 499-505, 2005.
• [5] Jang, G. H., Seo, C. H., Ho Scong Lee, Finite element model analysis of an HDD considering the flexibility of spinning disc-spindle, head-suspension-actuator and supporting structure, Microsystem Technologies, 13, pp. 837-847, 2007.
• [6] Miszczak, A., Analiza hydrodynamicznego smarowania ferrocieczą poprzecznych łożysk ślizgowych. Monografia. Fundacja Rozwoju Akademii Morskiej, Gdynia 2006.
• [7] Wierzcholski, K, Miszczak, A., Adhesion Influence on the Oil Velocity and Friction Forces in Cylindrical Microbearing Gap. Scientific Problems of Machines Operation and Maintenance, Polish Academy of Sciences, z. 1(161), Vol.45, pp. 71-79, 2010.