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Journal of Materials Science

, Volume 44, Issue 13, pp 3483–3487 | Cite as

Effect of in situ synthesized TiB2 on the reaction between B4C and Al in a vacuum infiltrated B4C–TiB2–Al composite

  • P. LüEmail author
  • X. Y. Yue
  • L. Yu
  • H. Q. Ru
Article

Abstract

The in situ reaction equation of B4C and TiO2 was identified using thermodynamic calculations and XRD analysis. The optimum presintering process was determined according to investigating the effect of presintering temperature on the flexural strength and porosity of the porous B4C–TiB2 preform. The effect of in situ synthesized TiB2 on the reaction products and initial reaction temperature of B4C and Al was discussed based on DSC and XRD analysis. The results showed that the in situ synthesized TiB2 could effectively improve the mechanical properties of the B4C–TiB2–Al composite, elevate the initial reaction temperature of B4C and Al, change the reaction products, and moderate the reaction of B4C and Al. The mechanism of reaction between B4C and Al was discussed.

Keywords

TiO2 Flexural Strength Gibbs Free Energy Change TiB2 Phase Initial Reaction Temperature 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 50372010), the Research Fund for the Doctoral Program of Higher Education (No. 20060145028) and Supported by Program for Changjiang Scholars and Innovative Research Team in University (IRT0713).

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education)Northeastern UniversityShenyangChina

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