裸金属冠脉支架的真空退火热处理及评价  

Evaluation of metal coronary stents vacuum annealing

作　　者：刘威 陈庆福[1] 谢超英 LIU Wei;CHEN Qing-fu;XIE Chao-ying(Lumenous Peiertech,Jiangyin,Jiangsu 214437,China;School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]江阴法尔胜佩尔新材料科技有限公司,江苏江阴市214400 [2]上海交通大学材料科学与工程学,上海200240

出　　处：《天津理工大学学报》2019年第3期30-33,共4页Journal of Tianjin University of Technology

摘　　要：金属冠脉支架的真空退火热处理是其生产制造过程中的关键过程和特殊工序,通过真空退火热处理可以优化金属冠脉支架的性能,包括降低材料的抗拉强度和硬度、提高断裂延伸率、细化晶粒组织等.真空退火热处理工艺的控制水平决定了金属冠脉支架在植入人体过程中、以及植入人体后的性能表现.建议将退火热处理后金属冠脉支架控制在断裂延伸率50%以上,晶粒度等级8级以上.The vacuum annealing process is the key and special process of metal coronary stents manufacturing. The properties of metal stents could be optimized by vaccuum annealing,including decreasing the tensile strength and hardness,improving the breaking elongation and making the grain fine. The control of vacuum annealing determines the performance of metal coronary stent during implanting into human body and after being in human body. It is suggested to control the metal coronary stents after vacuum annealing as breaking elongation over 50% and grain size finer than grade 8.

关 键 词：冠脉支架 真空退火 显微维氏硬度 显微组织 

分 类 号：TP214[自动化与计算机技术—检测技术与自动化装置]