Pressure infiltration synthesis of lightweight syntactic aluminum matrix composites

Pradeep K. Rohatgi, Simon Alaraj, Nikhil Gupta

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Experiments on pressure infiltration of aluminum melts in loose beds of hollow spherical fly ash particles (average size 150 μm) have been conducted to fabricated aluminum matrix syntactic foams. The threshold pressure and the length infiltrated are expressed in terms of the particle size, the particle volume fraction, particles wall thickness, the melt viscosity, the particle temperature, and the surface tension of the melt. The calculated value of the threshold pressure for spherical hollow particles at a particle temperature of 250°C is 39kPa compared to the experimentally observed values around 35 kPa. The infiltration length is expressed as a function of applied pressure, the contact angles between the particle and the melt, and the temperature of the melt front for infiltration of molten aluminum in a bed consisting of hollow spherical particles.

Original languageEnglish (US)
Title of host publication20th Technical Conference of the American Society for Composites 2005
Pages869-879
Number of pages11
StatePublished - 2005
Event20th Technical Conference of the American Society for Composites 2005 - Philadelphia, PA, United States
Duration: Sep 7 2005Sep 9 2005

Publication series

Name20th Technical Conference of the American Society for Composites 2005
Volume2

Other

Other20th Technical Conference of the American Society for Composites 2005
CountryUnited States
CityPhiladelphia, PA
Period9/7/059/9/05

ASJC Scopus subject areas

  • Ceramics and Composites

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