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Joining characteristics of oxidized SiC particles reinforced Al–Mg matrix composite prepared by reaction infiltration processing

Published online by Cambridge University Press:  31 January 2011

Zhongliang Shi ,
Shijiro Ochiai ,
Masaki Hojo ,
Jaechul Lee ,
Mingyuan Gu  and
Hoin Lee
Zhongliang Shi
Affiliation:
Mesoscopic Materials Research Center, Graduate School of Engineering, Kyoto University, Kyoto 606–8501, Japan and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200030, China
Shijiro Ochiai
Affiliation:
Mesoscopic Materials Research Center, Graduate School of Engineering, Kyoto University, Kyoto 606–8501, Japan
Masaki Hojo
Affiliation:
Mesoscopic Materials Research Center, Graduate School of Engineering, Kyoto University, Kyoto 606–8501, Japan
Jaechul Lee
Affiliation:
Division of Materials Science and Engineering, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul
Mingyuan Gu
Affiliation:
State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200030, China
Hoin Lee
Affiliation:
Division of Materials Science and Engineering, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul
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Abstract

The joining characteristics of oxidized SiC particles with Al–Mg alloy during reaction infiltration processing for fabrication of the composite were studied. From the measurement of weight changes due to the transformation from SiC into SiO2, it became clear that the thickness of SiO2 layer which was formed at the surface of SiC particles increased parabolically with holding time at the given exposing temperatures. The degree of oxidation of the preform made by SiC particles can be controlled by the application of the present oxidation data. The microstructure observed by field emission scanning electron microscopy showed network skeleton via necklike oxidized-joining among the SiC particles and the compressive strength of the perform increased with oxidation temperature. Furthermore, the microstructure of the composite which was fabricated by Al–2 wt% Mg alloy via reaction infiltration processing was examined and the formation of spinel was observed to join the matrix with the particles like a bridge, which is suitable to make the complicate and strong preforms for the near net-shape composites application in electronic packaging.

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 2 , February 2001 , pp. 400 - 406
Copyright
Copyright © Materials Research Society 2001

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References

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