混合表面纳米化制备钛表面Ru/Ti薄膜的结构及耐蚀性能

doi:10.11896/cldb.19120029

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Abstract Titanium and titanium alloys have the advantages of high specific strength, good machinability, resistance to shock and vibration, seawater and marine atmospheric corrosion-resistance, etc., making them as excellent marine metal structural materials. However, under aggressive high-concentration chloride and fluoride ions working condition, titanium and titanium alloys are liable to accelerate corrosion. In addition, when titanium and titanium alloys with high corrosion potential are in contact with other metals with low corrosion potential such as copper and iron galvanic corrosion will occur, which will easily cause corrosion of other metals. At present, various surface treatment methods can be used to improve the surface corrosion resistance of titanium and titanium alloys in order to expand their scope of application. However, the previous studies on the surface modification of titanium and titanium alloys mainly focused on the influence of a single surface treatment method on the corrosion performance. There are a few researches on the corrosion resistance of titanium and titanium alloys under a hybrid surface treatment method. The Ru/Ti films on the surface of industrial pure titanium (TA2) was prepared by surface mechanical polishing (SMAT), magnetron sputtering and thermal oxidation treatment, and to study their corrosion properties in simulated seawater. The X-ray diffractometer (XRD), field emission scanning electron microscope (FE-SEM), and electrochemical workstation were used to study the phase composition, surface morphologies, and corrosion resistance of the films. The results showed that the Ru / Ti film obtained on the surface of industrial pure titanium was uniform and dense without obvious defects. The Ti in the Ru / Ti film exhibited an α-Ti and fcc-Ti dual-phase structure. The corrosion resistance of thin film of indust-rial pure titanium in simulated seawater was significantly improved.

Key words： surface mechanical attrition treatment magnetron sputtering thermal oxidation Ru/Ti film commercial pure titanium corrosion resistance

Published: 24 December 2020

CLC number:

TG178

Fund:This work was financially supported by the National Natural Science Foundation of China (51564025), the Natural Science Foundation of Yunnan (2017FA029).

About author:: Dengde Yu, received his B.S. degree from Henan Polytechnic University in July, 2017. He is currently a full-time graduate student of the School of Materials Science and Engineering of Kunming University of Science and Technology. He is jointly trained by Kunming University of Science and Technology and Kunming Institute of Precious Metals under the guidance of Professor Ming Wen and Professor Hongxi Liu. His research has focused on surface modification of rare and precious metals.
Ming Wen received his Ph.D. degree in materials science from the School of Materials Science and Engineering of Shanghai Jiaotong University. He has been worked for Kunming Institute of Precious Metals since he graduated from Shanghai Jiaotong University. His research interest is sputtering targets and related thin films. He has published more than 20 SCI papers recently, including Scripta Materialia,Surface & Coatings Technology, Applied Surface Science, etc.
Hongxi Liu, male, doctor, professor and doctoral supervisor. In 2003 and 2007, he obtained master′s and doctor′s degrees respectively from Harbin Institute of Technology. He is mainly engaged in the research of surface modification of ion beam and laser beam, optimization design and preparation of functional coating, and laser additive manufacturing.

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Cite this article:

YU Dengde,ZHANG Renyao,SHEN Yue, et al. Structure and Corrosion-resistance Properties of Ru/Ti Thin Films on Pure Titanium Surface via Hybrid Surface Nanocrystallization[J]. Materials Reports, 2020, 34(24): 24086-24091.

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http://www.mater-rep.com/EN/10.11896/cldb.19120029 OR http://www.mater-rep.com/EN/Y2020/V34/I24/24086

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