J. Mater. Sci. Technol. ›› 2015, Vol. 31 ›› Issue (4): 361-368.DOI: 10.1016/j.jmst.2014.09.013

Special Issue: 铝合金专辑

• Orginal Article • Previous Articles     Next Articles

Effect of Decomposition Kinetics of Titanium Hydride on the Al Alloy Melt Foaming Process

Donghui Yang1, 2, Jianqing Chen1, Hui Wang3, *, Jinghua Jiang1, Aibin Ma1, Z.P. Lu3   

  1. 1 College of Mechanics and Materials, Hohai University, Nanjing 210098, China; 2 Hohai Science & Technology Research Institute Limited Company, Changzhou 213164, China; 3 State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
  • Received:2014-04-30 Online:2015-04-20 Published:2015-07-23
  • Contact: Corresponding author. Ph.D.; Tel.: +86 10 62332246; Fax: +86 10 62333447.
  • Supported by:
    This work is supported by the Supporting Program for Science and Technology of Changzhou (Industry, Grant No. CE20120024) and National Natural Science Foundation of China (Grant No. 11472098). Dr. Hui Wang acknowledges the financial support from 111 Project (No. B07003), the Program for Changjiang Scholars and Innovative Research Team in University and the Research Project of State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing (SKL-AMM-USTB) (Grant No. 2011Z-13).

Abstract: The gas released from the titanium hydride decomposition is one of the key factors to influence the Al alloy melt foaming process. In this study, a set of decomposition kinetic equations of titanium hydride was acquired by separating its temperature programmed decomposition (TPD) spectrum, which was acquired by a special designed TPD apparatus with argon used as carrier gas and thermal conductivity cell as the detector. According to these equations, the decomposition and hydrogen release characteristics of titanium hydride at a fixed/elevated temperature are described quantitatively, which can be applied to forecast the Al alloy melt foaming process and furnish the theoretical basis for fabrication of three-dimensional complex shaped Al alloy foam.

Key words: Titanium hydride, Thermal decomposition, Kinetic, Al alloy