摘要
TiH_(2)是制备轻质闭孔泡沫铝材料的重要原料,为改善其热分解行为,将Al粉和TiH_(2)进行低能球磨制备发泡混合体,实现Al粉对TiH_(2)的包覆作用。对制备的该发泡混合体进行热重分析。结果表明:低能球磨可实现TiH_(2)颗粒尺寸的减小,并使其均匀镶嵌在Al粉上;发泡混合体的分解温度要大于单纯经过预处理TiH_(2)的分解温度且发泡混合体的吸热峰由410~550℃的单峰变为480~560℃和650~675℃的双峰形态。随着发泡混合体中Al粉的不断增多,TiH_(2)的吸热密度不断减小,而Al粉的吸热密度不断增大。
TiH_(2)is an important raw material for the preparation of lightweight closed-cell aluminum foam materials.In order to improve its thermal decomposition behavior,Al powders and TiH_(2)are subjected to low-energy ball milling to prepare the foaming mixture to achieve the coating effect of Al powder on TiH_(2).The thermo-gravimetric analysis of the prepared foaming mixture was carried out.The results show that low-energy ball milling can reduce the size of TiH_(2)particles and make them evenly embedded in Al powders.The decomposition temperature of the foaming mixture is greater than that of TiH_(2)after pure pretreatment.The endothermic peak changes from a single peak at 410-550℃to a double peak at 480-560℃and 650-675℃;with the continuous increase of Al powders in the foaming mixture,the endothermic density of TiH_(2)keeps decreasing,while the endothermic density of Al powder keeps increasing.
作者
张鹏飞
安钰坤
杨思一
赵而团
张均闪
马浩源
ZHANG Pengfei;AN Yukun;YANG Siyi;ZHAO Ertuan;ZHANG Junshan;MA Haoyuan(School of Mechanical Engineering,Shandong University of Technology,Zibo 255000,China)
出处
《热加工工艺》
北大核心
2021年第20期61-64,共4页
Hot Working Technology
基金
国家自然科学基金青年项目(51904179)
山东省自然科学博士基金项目(ZR2019BEM004)
山东省自然科学基金面上项目(ZR2018MEM006)
中国博士后科学基金面上项目(2018M642683)。
关键词
发泡混合体
热失重法
TiH_(2)
热分解
吸热密度
foaming mixture(FM)
thermo-gravimetry(TG)
TiH_(2)
thermal decomposition
endothermic density
