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Journal of Materials Science

, Volume 41, Issue 21, pp 7232–7239 | Cite as

Squeeze infiltration processing of nickel coated carbon fiber reinforced Al-2014 composite

  • Pradeep K. Rohatgi
  • Vindhya Tiwari
  • Nikhil Gupta
Article

Abstract

Ni-coated fibers are widely used to synthesize carbon fiber reinforces Al based composites. It is observed that during the pressure infiltration process, significant amount of damage takes place in the nickel (Ni) coating due to a difference in the thermal expansion coefficients of fibers and Ni-coating. A modified squeeze infiltration set up is studied in the present work to minimize the damage to the Ni-coating during the infiltration process. This process resulted in significant improvement in retention of the Ni-coating compared to the unmodified process. The solidification pattern in the matrix was established by Energy Dispersive Spectroscopic analysis, which suggests that solidification of primary α-Al started in the interfiber region. The Vickers hardness values for the unreinforced portion of the sample, the matrix regions within the fiber tows and at the fiber matrix interface were found to be 55, 72 and 87, respectively.

Keywords

Carbon Fiber Energy Dispersive Spectroscopy Fiber Surface Fiber Matrix Interface Carbon Fiber Surface 

Notes

Acknowledgments

The authors would like to express gratitude to the NSF for funding this research under grant NSF CTS970045N, CMS9821057 and CTS000003N.

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Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  • Pradeep K. Rohatgi
    • 1
  • Vindhya Tiwari
    • 1
  • Nikhil Gupta
    • 2
  1. 1.Materials Engineering Department, Center for Composite MaterialsUniversity of Wisconsin – MilwaukeeMilwaukeeUSA
  2. 2.Mechanical, Aerospace and Manufacturing Engineering DepartmentComposite Materials and Mechanics Laboratory, Polytechnic UniversityBrooklynUSA

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