Nano-Porous Layer on Steel Surface as Lubricant Carrier

Authors: Utsunomiya, Hiroshi; Kawajiri, Shogo; Takahira, Nobuyuki; Sakai, Tetsuo; Tanaka, Toshihiro

Source: Journal of Nanoscience and Nanotechnology, Volume 11, Number 2, February 2011 , pp. 1750-1753(4)

Publisher: American Scientific Publishers

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Abstract:

In cold forging of steels, metal soap on zinc-phosphate coating is excellent lubrication system. However, the system is not only less productive, but produces hazardous wastes. In this study, an alternative lubrication system using surface porous layer is proposed. Surface oxide on low carbon steel turns into porous layer by chemical reduction using hydrogen. It is found that liquid lubricant decreases the friction coefficient in compression greatly. The porous surface enhances the decrease, especially in the cases of heavy deformation.

Keywords: POROUS METAL; COLD FORGING; PHOSPHATING; OIL PIT; TRIBOLOGY

Document Type: Research article

DOI: http://dx.doi.org/10.1166/jnn.2011.3356

Publication date: 2011-02-01

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Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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