Decomposition behavior of titanium hydride treated by surface oxidation

• Published in: Rare metals Vol. 34; no. 1; pp. 28 - 33
• Main Authors: Luo, Hong-Jie, Lin, Hao, Chen, Pei-Hong, Yao, Guang-Chun
• Format: Journal Article
• Language: English
• Published: Springer Berlin Heidelberg Nonferrous Metals Society of China 2015; Springer Nature B.V
• 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; Oxidation treatment; Titanium hydride; Thermal decomposition; Aluminum foam
• ISSN: 1001-0521; 1867-7185
• DOI: 10.1007/s12598-014-0415-z

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.