Decomposition behavior of titanium hydride treated by surface oxidation

作     者：Hong-Jie Luo Hao Lin Pei-Hong Chen Guang-Chun Yao 

作者机构：School of Materials and Metallurgy Northeastern University Engineering Technology Research Centre of Ministry of Education for Materials Advanced Preparation 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2015年第34卷第1期

页      面：28-33页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：financially supported by the National Natural Science Foundation of China (No. 51174060) the Science and Technology Department of Liaoning Province of China (No. 2013223004) 

主　　题：Titanium hydride Oxidation treatment Thermal decomposition Aluminum foam 

摘      要：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.