Decomposition behavior of titanium hydride treated by surface oxidation

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 Till2 particles were investigated in a rotating device. In the present work, the most two impo...

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Bibliographic Details
Published in:	Rare metals 2015, Vol.34 (1), p.28-33
Main Authors:	Luo, Hong-Jie, Lin, Hao, Chen, Pei-Hong, Yao, Guang-Chun
Format:	Article
Language:	eng
Subjects:	Biomaterials Chemistry and Materials Science Decomposition Differential scanning calorimetry Energy Foams Heat treatment Hydrides Hydrogen storage Materials Engineering Materials Science Metallic Materials Nanoscale Science and Technology Oxidation Physical Chemistry Scanning electron microscopy Titanium 分解行为差示扫描量热法扫描电子显微镜时间间隔氢化钛热处理工艺表面氧化铸造铝合金
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Summary:	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 Till2 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 Till2 is more significant than that of oxidation time. The onset temper- ature and peak value of Till2 decomposition shift from left to right through elevating temperature and extending time. Heat treatment process for Till2 at 500 ℃ between 1 and 5 h in air is favorable for preparing aluminum foam.
ISSN:	1001-0521 1867-7185