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IJAT Vol.10 No.5 pp. 773-779
doi: 10.20965/ijat.2016.p0773
(2016)

Paper:

Influence of Workpiece Materials on the Characteristics of the Layers by Electrical Discharge Coating

Nobuyuki Sumi*,†, Chihiro Kato**, Keita Shimada**, Masayoshi Mizutani**, and Tsunemoto Kuriyagawa**

*Nagoya Works, Mitsubishi Electric Corporation
5-1-14 Yada-minami, Higashi-ku, Nagoya 461-8670, Japan

Corresponding author

**Department of Mechanical Systems and Design, Tohoku University, Sendai, Japan

Received:
January 31, 2016
Accepted:
July 5, 2016
Published:
September 5, 2016
Keywords:
electrical discharge coating, Si layer, precipitation, gray cast iron, friction coefficient
Abstract

We investigated the influence of iron-based workpiece materials on the characteristics of the Si layers by electrical discharge coating. It was found that the chemical elements of the precipitations were uniformly dispersed in the layers on the workpieces containing precipitations a few micrometers in diameter. By contrast, voids occurred in the layer on the workpiece containing bigger precipitations because the precipitations that had not totally melted in the coating process were the starting points of the voids. In addition, the surface of the Si layer on FC250 was extremely rough, and the distribution of the chemical elements of the layer was inhomogeneous. However, the layer was amorphous, and the friction coefficient of the layer was lower than that of the workpiece.

Cite this article as:
N. Sumi, C. Kato, K. Shimada, M. Mizutani, and T. Kuriyagawa, “Influence of Workpiece Materials on the Characteristics of the Layers by Electrical Discharge Coating,” Int. J. Automation Technol., Vol.10, No.5, pp. 773-779, 2016.
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Last updated on Dec. 18, 2018