α-Al2O3添加剂对Ti6Al4V合金表面微弧氧化涂层的影响
1College of Mechatronic Engineering, North University of China, Taiyuan 030051, China.
Nanomaterials (Basel, Switzerland)
|June 10, 2023
概括
将α-氧化物 (α-Al2O3) 纳米颗粒添加到Ti6Al4V合金上的微弧氧化涂层中,可以显著提高表面质量,硬度和耐磨/耐腐蚀性. 这些纳米粒子通过物理嵌入和化学反应集成,改善涂层特性.
科学领域:
- 材料科学 材料科学 材料科学
- 表面工程是什么?表面工程是什么?
- 纳米技术纳米技术
背景情况:
- 微弧氧化 (MAO) 是对Ti6Al4V.等合金的表面处理.
- 提高MAO涂层性能对于要求高的应用至关重要.
- 纳米颗粒的结合提供了一个修改涂层特性的途径.
研究的目的:
- 研究α-Al2O3纳米粒子对Ti6Al4V合金MAO涂层的微观结构和性能的影响.
- 为了确定α-Al2O3的最佳度,以提高物业性能.
- 了解纳米粒子融入MAO涂层的机制.
主要方法:
- 在Na2SiO3-Na(PO4) 6电解质中,在Ti6Al4V合金上制备MAO涂层,具有不同α-Al2O3纳米颗粒度 (0,1,3,5g/L) 的制备.
- 使用厚度计,SEM,XRD,激光共聚焦显微镜,微硬度测试仪和电化学工作站进行表征.
- 分析涂层厚度,形态,相位组成,粗度,微硬度,摩擦,磨损和耐腐蚀性.
主要成果:
- 添加α-Al2O3纳米粒子改善了表面质量,厚度,微硬度,摩擦/磨损性能和耐腐蚀性.
- 纳米粒子通过物理嵌入和化学反应被纳入.
- 涂层阶段包括TiO2,α-Al2O3,Al2TiO5和SiO2.2. 这三种.
- 增加α-Al2O3度导致更大的厚度和硬度,减少粗度和微孔大小.
结论:
- α-Al2O3纳米粒子有效地增强了Ti6Al4V合金MAO涂层的性能.
- 观察到的改善归因于填充效应和改变的相组合.
- 用α-Al2O3优化MAO涂层显示出优越的机械和保护特性.
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