电爆喷射沉积法制备镁合金微细管  

Fabrication of magnesium alloy micro tube by electro-explosion spray deposition

作　　者：李增罡 朱亮[1,2] 朱亚军 姚仁 LI Zenggang;ZHU Liang;ZHU Yajun;YAO Ren(State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metal,Lanzhou University of Technology,Lanzhou 730050,China;Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州730050 [2]兰州理工大学,甘肃兰州730050

出　　处：《电焊机》2021年第9期25-30,I0004,共7页Electric Welding Machine

基　　金：国家自然科学基金(51765038)。

摘　　要：镁合金作为新型可降解生物材料,在第四代血管支架植入产品领域具有重要的应用价值,但微细管材较大的加工难度制约了其应用推广。提出电爆喷射沉积镁合金微细管的新方法,并对其工艺过程进行了试验研究。结果表明,丝径0.5 mm、初始电压14 kV、沉积距离25 mm时获得的沉积层的均匀性、致密性以及整体性较好且具备纳米晶组织结构,并制备出外径3.5 mm、壁厚0.12 mm的镁合金微细管,符合镁合金血管支架的尺寸要求。As a new degradable biological material,magnesium alloy has important application value in the field of the fourth generation of vascular stent implantation products,but its application and promotion are restricted due to the difficulty in the processing of micro-tubes.A new method of electro-explosive spray deposition of magnesium alloy micro tube is proposed and the process is studied.The results show that when the wire diameter is 0.5 mm,the initial voltage is 14 k V,and the deposition distance is 25 mm,the uniformity,compactness and integrity of the deposition layer are good,and the nanocrystalline structure is obtained.The magnesium alloy micro tube with an outer diameter of 3.5 mm and a wall thickness of 0.12 mm are prepared,which meet the size requirements of the magnesium alloy vascular stent.

关 键 词：喷射沉积 镁合金微细管 纳米晶结构 生物材料 

分 类 号：TG174.44[金属学及工艺—金属表面处理]