Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.11889/8097
Title: Thermal expansion of aluminum–fly ash cenosphere composites synthesized by pressure infiltration technique
Authors: Rohatgi, P. K. 
Gupta, N. 
Alaraj, Simon 
Keywords: Metallic composites;Metal matrix composites;Solidification;Coefficient of thermal expansion
Issue Date: 2006
Abstract: The coefficients of thermal expansion (CTEs) of commercially available pure aluminum and aluminum alloy composites containing hollow fly ash particles (cenospheres) of average size 125 mm are measured using a dilatometer. Three types of composites are made using the pressure infiltration technique at applied pressures and infiltration times of 35 kPa for 3 min, 35 kPa for 7 min, and 62 kPa for 7 min. The volume fractions of the fly ash cenospheres in the composites are around 65%. The CTE of the composites is measured to be in the range of 13.1 106 –11 106 / C, which is lower than that of pure aluminum (25.3 106 / C). The infiltration processing conditions are found to influence the CTE of the composites. A higher applied pressure and a longer infiltration time lead to a lower CTE. The theoretical value of the CTE of fly ash cenospheres is estimated to be 6.1 106 / C.
URI: http://hdl.handle.net/20.500.11889/8097
Appears in Collections:Fulltext Publications

Show full item record

Page view(s)

13
checked on Jun 27, 2024

Download(s)

33
checked on Jun 27, 2024

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.