电气参数对微弧氧化涂层在纯上的影响
Aqeel Abbas1, Hsuan-Ping Kung1, Hsin-Chih Lin1
1Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan.
Micromachines
|October 28, 2023
概括
的微弧氧化 (MAO) 产生陶氧化物涂层. 像低频率 (100 Hz) 和高负荷比率 (60%) 这样的最佳参数产生更密集的薄膜,具有更好的耐磨性和耐腐蚀性.
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?
- 电化学 电化学 电化学
背景情况:
- 纯广泛用于生物医学和工业应用.
- 表面修改对于提高的性能至关重要.
- 微弧氧化 (MAO) 提供了一种创建保护性陶涂层的方法.
研究的目的:
- 为了研究电流频率和功率比对纯上的微弧氧化 (MAO) 涂层的影响.
- 分析这些参数如何影响表面形态,相位组成,磨损和耐腐蚀性.
- 为了确定增强基板性能的最佳MAO条件.
主要方法:
- 微弧氧化 (MAO) 使用酸和二酸电解质.
- 包括扫描电子显微镜 (SEM) 在内的表征技术用于形态学.
- 对于相位组成的X射线衍射 (XRD).
- 用于磨损测试的球盘式三角计.
- 潜在动力学极化用于对抗腐蚀的评估.
主要成果:
- 在低电流频率 (100 Hz) 和高功率比率 (60%) 制造的MAO薄膜呈现出较低的孔隙性和较高的紧性.
- 在中 (500 Hz) 和高 (1000 Hz) 频率和更高的负荷比率下观察到最佳耐磨性.
- 最大薄膜厚度为11.25微米,在100Hz和20%的使用率下实现.
- 值得忽视的电流密度在500Hz和1000Hz时被记录在20%的工作周期下,这表明稳定性得到了改善.
结论:
- 当前的频率和强度比对纯上MAO涂层的性能产生重大影响.
- 特定的参数组合可以量身定制,以实现所需的特征,如紧性,耐磨性和厚度.
- 这些发现为优化MAO工艺提供了宝贵的见解,以提高要求高的应用中的性能.
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