含TiH_(2)发泡混合体的热分解行为研究  

Research on Thermal Decomposition Behavior of Foaming Mixture with TiH_(2)

作　　者：张鹏飞 安钰坤 杨思一[1] 赵而团[1] 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)

机构地区：[1]山东理工大学机械工程学院,山东淄博255000

出　　处：《热加工工艺》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)。

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.

关 键 词：发泡混合体 热失重法 TiH_(2) 热分解 吸热密度 

分 类 号：TG146.2[一般工业技术—材料科学与工程]