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Home  >  Journal list  >  MATERIALS TRANSACTIONS  >  Vol.46  No.10 (2005)  >  pp.2156-2158

MATERIALS TRANSACTIONS
<<Previous article Vol.46  No.10 (2005)   pp.2156 - 2158 Next article>>

Effect of Ultrasonic Vibration on Infiltration of Nickel Porous Preform with Molten Aluminum Alloys

Yong Bum Choi1)2), Gen Sasaki1)2), Kazuhiro Matsugi1)2) and Osamu Yanagisawa1)2)
1) Graduate School of Engineering, Hiroshima University
2) Hiroshima Prefectural Institute of Industrial Science and Technology


In order to obtain the high-performance composites with high density, the influence of additional ultrasonic vibration on the infiltration of molten aluminum alloy (ASTM A336.0) into nickel porous preform by low-pressure and pressureless casting was investigated. There was no effect of ultrasonic vibration on infiltration distance under pressureless casting because of presence of surface oxide film on the molten alloy, even when the contact angle is reduced by ultrasonic vibration. However, infiltration distance increases upon applying ultrasonic vibration under low pressure. The infiltration distance appears to increase because of the decrease of the contact angle between the reinforcement and molten alloy upon applying ultrasonic vibration, as well as the reducing effect of oxide film on the surface of the molten alloy under low pressure. The improvement of infiltration by applying ultrasonic vibration under low pressure is applicable to the to infiltration of into nickel porous preform.


Keyword:
nickel porous preform, ultrasonic vibration, low pressure casting, pressureless casting, infiltration, contact angle, aluminum alloy, metal matrix composites

Received: April 26, 2005
Accepted: August 04, 2005 , Published online: November 14, 2005
Copyright (c) 2005 The Japan Institute of Metals

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