通过磁控溅射沉积在 Ti6Al4V 合金上的成分分级 Ta2O5/Ti 薄膜的微观结构和性能

IF 5.3 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology Pub Date : 2024-10-09 DOI:10.1016/j.surfcoat.2024.131443

Haiyang Li , Yifan Ding , Xujun Hu , Wenyuan Li , Cuijiao Liao , Zeliang Ding

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引用次数: 0

摘要

五氧化二钽陶瓷（Ta2O5）具有优异的耐磨性、化学稳定性和生物相容性，是一种很有前景的金属植入物改性材料。然而，Ta2O5 涂层的临床应用可能会受到粘附力不足的限制，这是因为 Ta2O5 涂层和金属基底之间的性能不匹配造成的。本研究利用磁控溅射技术在 Ti6Al4V 钛合金基底上开发了一种 Ta2O5/Ti 梯度膜，由一个 Ti 结合层、四个具有梯度成分的 Ta2O5-Ti 复合夹层和一个 Ta2O5 表面层组成。以 Ta2O5 单层涂层为参照，研究了 Ta2O5/Ti 梯度薄膜的微观结构和性能。结果表明，与 Ta2O5 单层涂层相比，梯度层密度更高、表面粗糙度更低、残余热应力更小、附着力、机械性能和耐磨性更好。不过，Ta2O5/Ti 梯度层样品的耐腐蚀性不如 Ta2O5 单层涂层样品，原因是夹层中的 Ta2O5 和 Ti 之间存在相间腐蚀。这些重要发现为提高 Ti6Al4V 钛合金表面 Ta2O5 涂层的整体性能提供了一种可行的方法，从而为其在生物医学领域的广泛应用开辟了道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Microstructure and performance of compositionally graded Ta2O5/Ti thin films on Ti6Al4V alloy deposited by magnetron sputtering

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Microstructure and performance of compositionally graded Ta2O5/Ti thin films on Ti6Al4V alloy deposited by magnetron sputtering

Tantalum pentoxide (Ta₂O₅) ceramic is a promising material for modifying metal implants due to its superior wear resistance, chemical stability, and biocompatibility. However, the clinical application of Ta₂O₅ coatings may be limited by inadequate adhesion, resulting from performance mismatches between Ta₂O₅ coatings and metal substrates. In this study, a Ta₂O₅/Ti gradient film was developed on the Ti6Al4V titanium alloy substrate using magnetron sputtering, consisting of a Ti bonding layer, four Ta₂O₅-Ti composite interlayers with graded composition, and a Ta₂O₅ surface layer. The microstructure and properties of the Ta₂O₅/Ti gradient films were investigated, with a Ta₂O₅ monolayer coating as a reference. Results reveal that the gradient layers have higher density, lower surface roughness, diminished residual thermal stress, and improved adhesion, mechanical properties, and wear resistance compared to the Ta₂O₅ monolayer coating. However, the corrosion resistance of the Ta₂O₅/Ti gradient layer sample is inferior to that of the Ta₂O₅ monolayer coating sample, attributed to interphase corrosion between Ta₂O₅ and Ti within the interlayers. These significant findings offer a promising approach for enhancing the overall performance of Ta₂O₅ coating on Ti6Al4V titanium alloy surfaces, thereby opening avenues for widespread application in the biomedical industry.

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来源期刊

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.