Synergetic improvements in surface hydrophobicity and wear resistance of TC4 materials via the combination of rapid heating and EtOH quenching methods
Synergetic improvements in surface hydrophobicity and wear resistance of TC4 materials via the combination of rapid heating and EtOH quenching methods
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DOI：
10.1016/j.jallcom.2023.172582
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发表时间：
2023-10-26
影响因子：
6.2
通讯作者：
Wang，Yaping
中科院分区：
文献类型：
--
作者：
Wang，Xueliang;Wei，Sujing;Wang，Yaping
Ti-6Al-4V（TC 4）材料具有高疏水性和耐磨性，可提高海上条件下的防腐蚀性能。在这项工作中，提出了一种新的策略，同时提高表面织构TC 4（选择性激光熔化，SLM-TC 4）材料的表面疏水性和耐磨性。通过快速感应加热和乙醇淬火（IHQ-TC 4）工艺实现了碳纳米管薄膜的原位沉积。IHQ处理后，表面化学组成由Ti（SLM-TC 4）转变为碳膜和TiO 2纳米颗粒的混合物（IHQ-TC 4），相应的表面粗糙度降低，导致表面润湿性由亲水性（SLM-TC 4）转变为疏水性（IHQ-TC 4，125°）。利用分子动力学模拟方法探讨了IHQ-TC 4的润湿性转变机制，发现表面化学组成的演变是影响润湿性转变的主要因素，而碳膜的存在是IHQ-TC 4疏水性的主要原因。此外，IHQ-TC 4的表面硬度和耐磨性与SLM-TC 4相比大大提高。通过IHQ工艺对TC 4材料的疏水性和耐磨性的集体增强为提高海上条件下使用的TC 4材料的防腐蚀性能提供了一种新颖且简便的策略。
Ti-6Al-4V (TC4) materials with high hydrophobicity and wear resistance improve anticorrosion performance when utilized in offshore conditions. In this work, a novel strategy for simultaneously enhancing the surface hydrophobicity and wear resistance of surface textured TC4 (selected laser melting, SLM-TC4) materials was proposed. An in-situ deposition of ultrathin carbon film is realized via rapid induction heating followed by the EtOH quenching (IHQ-TC4) process. After the IHQ process, the surface chemical composition evolves from Ti (SLM-TC4) to the mixture of carbon film and TiO2nanoparticles (IHQ-TC4), and the corresponding surface roughness decreases, which results in a surface wettability transition from hydrophilicity (SLM-TC4) to hydrophobicity (IHQ-TC4, 125°). Molecular dynamics simulations were utilized to explore the wettability transition mechanism, and found that the surface chemical composition evolution is the dominant factor, and the carbon film is responsible for the hydrophobicity of IHQ-TC4. Moreover, the surface hardness and wear resistance of IHQ-TC4 are greatly enhanced compared to those of SLM-TC4. The collective enhancements to the hydrophobicity and wear resistance of TC4 materials via the IHQ process provide a novel and facile strategy for enhancing the anticorrosion performance of TC4 materials utilized in offshore conditions.