Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/43767
標題: Effect of the coating thickness and roughness on the mechanical strength and thermally induced stress voids in nickel-coated optical fibers prepared by electroless plating method
作者: Shiue, S.T.
薛顯宗
Yang, C.H.
Chu, R.S.
Yang, T.J.
關鍵字: optical fiber
nickel
electroless plating
stress
chemical-vapor-deposition
carbon coatings
silica
期刊/報告no:: Thin Solid Films, Volume 485, Issue 1-2, Page(s) 169-175.
摘要: The effect of the coating thickness and roughness on the mechanical strength and thermally induced stress voids in nickel-coated optical fibers is theoretically and experimentally investigated. Seven samples of nickel-coated optical fibers with identical fiber length but different coating thickness are prepared using electroless plating method. The thickness of the nickel coating is controlled by the plating time, with the thicknesses being 35, 65, 119, 218, 308, 419 and 565 nm, respectively. The mechanical and thermal stresses in these nickel-coated optical fibers are analyzed. The atomic force microscope measurement reveals that the roughness of the nickel coating is unchanged when the coating thickness is not larger than 65 nm. However, as the coating thickness is not less than 65 rim, the coating roughness increases with increasing the coating thickness. To increase the tensile strength of the nickel-coated optical fiber, the coating thickness should be not less than 65 nm, and the surface roughness of the nickel coating should not exceed 2.93 nm. Alternatively, if the coating thickness is in the range of 35 to 218 nm, thermally induced stress voids are less found in the nickel coatings. However, if the coating thickness is in the range of 308 to 565 nm, the number of thermally induced stress voids increases with increasing the coating thickness. To minimize these voids, the surface roughness of the nickel coating should also be decreased. (c) 2005 Elsevier B.V. All rights reserved.
URI: http://hdl.handle.net/11455/43767
ISSN: 0040-6090
文章連結: http://dx.doi.org/10.1016/j.tsf.2005.04.024
Appears in Collections:材料科學與工程學系

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