在铁基表面之间限制的酸盐的tribological属性
1State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing 400044, China.
Langmuir : the ACS journal of surfaces and colloids
|February 9, 2024
概括
酸滑油添加剂在铁表面上形成保护性 tribofilms. 较高的基底氧含量增加了摩擦,而三酸 (TCP) 的摩擦比三酸 (TNBP) 低.
科学领域:
- 部落学 (tribology) 是一个学科.
- 材料科学 材料科学 材料科学
- 表面化学 表面化学
背景情况:
- 酸滑油添加剂在铁表面上形成抗磨损的 tribofilms.
- 分解,聚合和膜形成的机制尚未完全理解.
研究的目的:
- 在铁基基板上研究TCP和TNBP的 tribochemical 反应和 tribological 特性.
- 阐明基质氧含量和添加剂分子结构的作用.
主要方法:
- 反应力场分子动力学 (ReaxFF-MD) 模拟.
- 在α-Fe110,a-FeO和a-Fe2O3表面上检查了三基酸盐 (TCP) 和三基酸盐 (TNBP).
主要成果:
- TCP和TNBP通过P-O和C-O键裂变分解,受基质氧和分子结构的影响.
- 吸附的碳薄膜和有机聚酸铁组在表面之间形成.
- 较高的基板氧含量导致两种添加剂的摩擦增加.
结论:
- 基质的氧含量和添加剂结构显著影响 tribofilm 的形成和摩擦.
- 与TNBP相比,TCP在不同的铁基板上表现出优越的摩擦减速.
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