日本金属学会誌

J. Japan Inst. Metals, Vol. 68, No. 1 (2004),
pp. 1-7

Effect of Surface Morphology on Wear Characteristics of Hypereutectic Al--Si Alloy

Hirotaka Kurita1, Hiroshi Yamagata1, Hiroki Arai2, and Tamotsu Nakamura2

1Research and Development Operations, Yamaha Motor Co. Ltd., Iwata 438-8501
2Department of Mechanical Engineering, Faculty of Engineering, Shizuoka University, Hamamatsu 432-8011

Abstract:

The effect of Si exposure height on the wear resistance of a hypereutectic Al--Si alloy was evaluated. The wear depth of the alloy was measured using a pin-on-disk type wear tester on the kinetic viscosity of lubricant, 2.20, 22.0 and 100 mm2/s. The Si exposure height was changed at each height of 0, 1.2, 2.4, 5.2, 7.5 μm by changing the immersing time in a NaOH solution. At the kinetic viscosity of 22.0 and 2.20 mm2/s of the lubricant, the wear curve shows a minimum value at the Si exposure height of 1.2 and 2.4 μm, resulting in a small effect of kinetic viscosity on the lubrication of the contact area.


(Received 2003/9/24)

Keywords:

aluminum-silicon alloy, hypereutectic, surface morphology, silicon, exposure height, pin-on-disk, wear


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