Surface treatment for improvement of coefficient of friction on sliding surfaces

• Autorzy: Tanabe I. , Soe Y. H. , Iyama T.
• Języki publikacji: EN

Abstrakty

EN

Recently, many micro structure products are used for compact, high precision and others functions in the field of measuring instruments, medical instruments, information processing devices and so on. However, in the small sliding parts of these products, the surface contact pressure becomes lowered and then, higher adhesive force occurs, resulting larger coefficient of friction. On the other hand, in the field of machine tools, lubrication free sliding parts are also demanded for eco-friendly. In this study, the surface treatment for improvement of coefficient of friction for both light load and heavy load applications are investigated. When laser ray is applied on stainless steel surface, CrO2 layer with small concaves like dimple is generated. This CrO2 layer is used in light load applications. Next, TiAlN and DLC coating are being used on cutting tools for reducing coefficient of friction and cutting heat. Therefore, these coating materials are used for heavy load and oil free applications. The improvement of coefficient of friction and life of coating are investigated by experiments. It was concluded from the results that; (1) Coefficient of friction for light load application can be reduced by coating CrO2 layer. (2) Coefficients of friction for heavy load application were reduced by coating TiAlN and DLC layer. (3) Life of both CrO2 and DLC layers are sufficiently long for practical applications at light load and heavy load respectively.

Słowa kluczowe

EN

tribology; friction; micromachine; laser machining; surface treatment; DLC; stable behavior

• Wydawca: Wydawnictwo Wrocławskiej Rady FSNT NOT
• Czasopismo: Journal of Machine Engineering
• Rocznik: 2012
• Tom: Vol. 12, No. 1
• Strony: 7--17
• Opis fizyczny: Bibliogr. 7 poz., tab., rys.

Twórcy

autor

Tanabe I.

• Nagaoka University of Technology, Dept. of Mechanical Engineering

autor

Soe Y. H.

• Nagaoka University of Technology, Dept. of Information Science and Control Engineering

autor

Iyama T.

• Nagaoka University of Technology, Educational Affairs Section, Mechanics and Machinery Group

Bibliografia

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• [3] TAIRA T., TANABE I., KYUSOJIN A., MINAKI K., 2004, Coefficient of Friction about Small Sliding SurfaceUsing Photo-fabrication ; Influence of the Sliding Surface on the Friction and the Desihn Using Neural Network, Transactions of the Japan Society of Mechanical Engineers, Series C, 70/690/547-553.
• [4] OHASHI H., 1987, Uncertainty of Measurement, The Japan Society of Mechanical Engineers, 47-48.
• [5] SHINADA M., TANABE I., TAKAHASHI S., ITAGAKI K., 2006, Surface Treatment Regarding Coloring of Stainless Steel Using YVO_4 Laser:Consideration of Environmental Factor, Sensitive Color and Life Regarding Coloring, Transactions of the Japan Society of Mechanical Engineers, Series C, 72/ 713/235-240.
• [6] TANABE I., TAIRA T., MINAKI K., SHINADA M., 2005, Coefficient of Friction Regarding Small Sliding Surface with Crater Made by Irradiation of YAG Laser: Application of Crater for Reducing Adhesive Force of Sliding Surface, Transactions of the Japan Society of Mechanical Engineers, Series C, 71/710/3048-3053.
• [7] ANDO Y., 2001, Tribologist, 46/6/463-468.