当前位置: X-MOL 学术Arch. Civ. Mech. Eng. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Atomic layer deposited ZnO films on stainless steel for biomedical applications
Archives of Civil and Mechanical Engineering ( IF 4.4 ) Pub Date : 2020-11-28 , DOI: 10.1007/s43452-020-00148-5
Marcin Basiaga , Witold Walke , Wojciech Kajzer , Agata Sambok-Kiełbowicz , Janusz Szewczenko , Wojciech Simka , Marek Szindler , Bogusław Ziębowicz , Vira Lubenets

The main goal of carried out tests were the impact of physicochemical properties of surface layers on the course of processes taking place on the surface of implants made of metallic biomaterials used in the bone system. As a precursor of ZnO, diethylzinc (DEZ) has been used, which reacted with water enabling the deposition of thin films. The chamber temperature was as follows—T = 200°–300 °C. The number of cycles was 500, 1000, and 1500. In the first stage, pitting corrosion test was carried out. Corrosion resistance has been tested under conditions simulating tissue environment. Moreover, the created layers were tested using electrochemical impedance spectroscopy (EIS). The conducted electrochemical tests showed the beneficial effect of the ZnO layer on the substrate made of 316 LVM steel, as evidenced by the obtained parameters describing the corrosion resistance. Furthermore, tests were performed on mechanical properties (scratch test), surface morphology (SEM and AFM method), and physical properties (wettability and thickness layers) for samples with different surface treatments. The investigations of the surface morphology of the applied ZnO layer using the ALD method showed a tendency to inherit the substrate independently of the used application parameters. On the other hand, the tests of adhesion to the substrate showed that the number of cycles of the application process has a fundamental impact on the adhesion of the applied layer to the substrate. Summarizing tests have clearly shown that the number of cycles and temperature in the case of the ZnO coating is significant and positively influences the increase of electrochemical, mechanical, and physical properties of layers.



中文翻译:

用于生物医学应用的不锈钢上原子层沉积的ZnO膜

进行测试的主要目的是表层的物理化学性质对在骨骼系统中使用金属生物材料制成的植入物表面上进行的加工过程的影响。作为ZnO的前驱物,已使用了二乙基锌(DEZ),该二乙基锌与水反应能够沉积薄膜。腔室温度如下— T = 200°–300°C。循环数为500、1000和1500。在第一阶段,进行点蚀测试。已经在模拟组织环境的条件下测试了耐腐蚀性。此外,使用电化学阻抗谱(EIS)测试创建的层。进行的电化学测试表明,ZnO层对由316 LVM钢制成的基材具有有益的作用,这由获得的描述耐腐蚀性的参数证明。此外,还对具有不同表面处理的样品的机械性能(划痕测试),表面形态(SEM和AFM方法)以及物理性能(润湿性和厚度层)进行了测试。使用ALD方法对所施加的ZnO层的表面形态的研究表明,与所使用的施加参数无关地倾向于继承衬底。另一方面,对基材的粘附力测试表明,施加过程的循环次数对所施加的层与基材的粘附力具有根本影响。总结测试清楚地表明,在使用ZnO涂层的情况下,循环次数和温度非常重要,并积极影响层的电化学,机械和物理性能的提高。

更新日期:2020-12-01
down
wechat
bug