Nanomechanical behavior, adhesion and wear resistance of tin oxide coatings for biomedical applications Nanomechanisches Verhalten, Haftung und Verschleißbeständigkeit von Zinnoxid-Beschichtungen für biomedizinische Anwendungen

IF 1.2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materialwissenschaft und Werkstofftechnik Pub Date : 2024-04-23 DOI:10.1002/mawe.202300242

S. Chayoukhi, B. Gassoumi, H. Dhifelaoui, A. Boukhachem, M. Amlouk

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Abstract

This study investigates the properties of tin oxide coatings employed in biomedical applications. The films were deposited on a clean glass substrate, preheated at 450 °C, applying the spray pyrolysis technique as the latter produces crystallized thin films without the need for further heat treatment. X-ray diffraction analysis showed that tin oxide films had a tetragonal structure characterized by a preferential orientation (111). The measurements of reflectance and transmittance revealed a wide optical band gap of 4.0 eV. Nanoindentation tests showed that the tin oxide coating, with a hardness of 5.9 GPa and a Young's modulus of 78 GPa, exhibited elastic-plastic behavior. In addition, tribological tests indicated that tin oxide coating had a very low coefficient of friction (μ=0.06), high wear resistance (wear rate 2.10⁻⁵ mm³ N⁻¹ m⁻¹) and good adhesion to the substrate (critical adhesion load of 5.55 N). It was also noticed that tin oxide thin films had antibacterial activity due to their nanocrystalline impurities. These properties make tin oxide perfectly acceptable for biomedical applications.

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生物医学应用中氧化锡涂层的纳米力学性能、附着力和耐磨性生物医学应用中氧化锡涂层的纳米力学性能、附着力和耐磨性

本研究探讨了生物医学应用中使用的氧化锡涂层的特性。薄膜沉积在洁净的玻璃基底上，在 450 ℃ 下预热，采用喷雾热解技术，因为后者无需进一步热处理即可生成结晶薄膜。X 射线衍射分析表明，氧化锡薄膜具有优先取向（111）的四方结构。对反射率和透射率的测量显示，其光带隙为 4.0 eV。纳米压痕测试表明，氧化锡涂层的硬度为 5.9 GPa，杨氏模量为 78 GPa，具有弹塑性。此外，摩擦学测试表明，氧化锡涂层具有极低的摩擦系数（μ=0.06）、较高的耐磨性（磨损率为 2.10-5 mm3 N-1 m-1）以及与基体良好的附着力（临界附着载荷为 5.55 N）。研究还发现，氧化锡薄膜中的纳米晶体杂质具有抗菌活性。这些特性使得氧化锡完全可以用于生物医学应用。

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来源期刊

Materialwissenschaft und Werkstofftechnik 工程技术-材料科学：综合

CiteScore

2.10

自引率

9.10%

发文量

154

审稿时长

4-8 weeks

期刊介绍： Materialwissenschaft und Werkstofftechnik provides fundamental and practical information for those concerned with materials development, manufacture, and testing. Both technical and economic aspects are taken into consideration in order to facilitate choice of the material that best suits the purpose at hand. Review articles summarize new developments and offer fresh insight into the various aspects of the discipline. Recent results regarding material selection, use and testing are described in original articles, which also deal with failure treatment and investigation. Abstracts of new publications from other journals as well as lectures presented at meetings and reports about forthcoming events round off the journal.