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Decomposition behavior of titanium hydride treated by surface oxidation

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Abstract

Titanium hydride attracts more attention as foaming agent in the fabrication of cellular metal materials. In order to meet most aluminum casting alloy’s melting properties, the heat treatment processes for TiH2 particles were investigated in a rotating device. In the present work, the most two important dynamic parameters, the treating temperature and oxidation interval, were taken under consideration. The decomposition behavior of titanium hydride was measured by differential scanning calorimetry (DSC) and the residual hydrogen content, morphologies and phase conversion were also characterized by hydrogen determinator, scanning electron microscopy (SEM), and X-ray diffractometer (XRD), respectively. The results show that the effect of temperature on the formation of oxidation film and decomposition behavior of TiH2 is more significant than that of oxidation time. The onset temperature and peak value of TiH2 decomposition shift from left to right through elevating temperature and extending time. Heat treatment process for TiH2 at 500 °C between 1 and 5 h in air is favorable for preparing aluminum foam.

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Acknowledgments

This study was financially supported by the National Natural Science Foundation of China (No. 51174060) and the Science and Technology Department of Liaoning Province of China (No. 2013223004).

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Authors and Affiliations

  1. School of Materials and Metallurgy, Northeastern University, Shenyang, 110819, China

    Hong-Jie Luo, Hao Lin, Pei-Hong Chen & Guang-Chun Yao

  2. Engineering Technology Research Centre of Ministry of Education for Materials Advanced Preparation, Shenyang, 110819, China

    Hong-Jie Luo, Pei-Hong Chen & Guang-Chun Yao

Authors
  1. Hong-Jie Luo
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  2. Hao Lin
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  4. Guang-Chun Yao
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Correspondence to Hao Lin.

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Luo, HJ., Lin, H., Chen, PH. et al. Decomposition behavior of titanium hydride treated by surface oxidation. Rare Met. 34, 28–33 (2015). https://doi.org/10.1007/s12598-014-0415-z

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  • DOI: https://doi.org/10.1007/s12598-014-0415-z

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