Improvement of adhesion and barrier properties of biomedical stainless steel by deposition of YSZ coatings using RF magnetron sputtering
Improvement of adhesion and barrier properties of biomedical stainless steel by deposition of YSZ coatings using RF magnetron sputtering
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DOI：
10.1016/j.matchar.2014.02.007
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发表时间：
2014-05-01
影响因子：
4.7
通讯作者：
Dorantes-Rosales, H.
中科院分区：
文献类型：
--
作者：
Sanchez-Hernandez, Z. E.;Dominguez-Crespo, M. A.;Dorantes-Rosales, H.
AISI 316L不锈钢（SS）已广泛用于生物医学应用中的人工膝关节和髋关节。在本研究中，氧化钇稳定的氧化锆（YSZ，ZrO 2 + 8%Y2O3）薄膜沉积在AISI 316 L SS射频磁控溅射使用不同的功率密度（50-250 W）和沉积时间（30-120分钟）从YSZ靶。利用X射线衍射（XRD）、扫描电子显微镜（SEM）和透射电子显微镜（TEM）研究了薄膜的晶体取向和表面形貌。在磷酸盐缓冲盐水（PBS）溶液中，使用电化学测试的原始和涂层样品的表面改性对AISI 316 L SS的腐蚀性能的影响进行了评估。YSZ涂层具有（111）晶体生长过程中沿沿着c轴的较短的沉积时间（30-60分钟）的优先取向，而多晶结构的形成在沉积时间从90到120分钟。的腐蚀保护特性的YSZ涂层取决于晶体的大小和膜的厚度。在200 W（120分钟）的沉积涂层的附着力和耐腐蚀性的至少一个因素的46和更高的击穿电位的显着增加。(C)2014爱思唯尔公司All rights reserved.
The AISI 316L stainless steel (SS) has been widely used in both artificial knee and hip joints in biomedical applications. In the present study, yttria stabilized zirconia (YSZ, ZrO2 + 8% Y2O3) films were deposited on AISI 316L SS by radio-frequency magnetron sputtering using different power densities (50-250 W) and deposition times (30-120 min) from a YSZ target. The crystallographic orientation and surface morphology were studied using X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The effects of the surface modification on the corrosion performance of AISI 316L SS were evaluated in phosphate buffered saline (PBS) solution using an electrochemical test on both the virgin and coated samples. The YSZ coatings have a (111) preferred orientation during crystal growth along the c-axis for short deposition times (30-60 min), whereas a polycrystalline structure forms during deposition times from 90 to 120 min. The corrosion protective character of the YSZ coatings depends on the crystal size and film thickness. A significant increase in adhesion and corrosion resistance by at least a factor of 46 and a higher breakdown potential were obtained for the deposited coatings at 200 W (120 min). (C) 2014 Elsevier Inc. All rights reserved.