کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1671724 | 1008922 | 2008 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Mechanical stability of the diamond-like carbon film on nitinol vascular stents under cyclic loading Mechanical stability of the diamond-like carbon film on nitinol vascular stents under cyclic loading](/preview/png/1671724.png)
The mechanical stability of diamond-like carbon (DLC) films coated on nitinol vascular stents was investigated under cyclic loading condition by employing a stent crimping system. DLC films were coated on the vascular stent of a three dimensional structure by using a hybrid ion beam system with rotating jig. The cracking or delamination of the DLC coating occurred dominantly near the hinge connecting the V-shaped segments of the stent where the maximum strain was induced by a cyclic loading of contraction and extension. However the failures were significantly suppressed as the amorphous Si (a-Si) buffer layer thickness increased. Interfacial adhesion strength was estimated from the spalled crack size in the DLC coating for various values of the a-Si buffer layer thickness.
Journal: Thin Solid Films - Volume 517, Issue 3, 1 December 2008, Pages 1146–1150