Page 139 - 《摩擦学学报》2021年第6期

第 41 卷 第 6 期 摩 擦 学 学 报 Vol 41 No 6
2021 年 11 月 Tribology Nov, 2021

DOI: 10.16078/j.tribology.2020281

Ag S纳米粒子原位合成以增强PAI涂层
2
机械和摩擦学性能

1,2
1,2
1,2*
1,2
1
1*
马彦军 , 李凤英 , 万宏启 , 陈 磊 , 吴平 , 周惠娣 , 陈建敏 1,2
(1. 中国科学院兰州化学物理研究所 中国科学院材料磨损与防护重点实验室, 甘肃 兰州 730000;
2. 中国科学院大学 材料与光电研究中心, 北京 100049)
摘 要: 借助单源前驱体热分解在聚酰胺酰亚胺(PAI)涂层中原位合成了硫化银(Ag 2 S)纳米粒子，并通过调节单源前
驱体的含量进一步调控纳米粒子尺寸. 采用X射线衍射仪和高分辨场发射扫描电镜对原位合成Ag 2 S纳米粒子的物
相结构、形貌、尺寸和尺寸分布进行了表征和分析；详细研究了Ag 2 S纳米粒子对PAI涂层机械性能和摩擦学性能的
影响；对其增强机制进行了探讨. 结果表明：PAI涂层中原位合成的Ag 2 S纳米粒子粒径较小而且分散均匀，且调节单
源前驱体能有效调控Ag 2 S纳米粒子的尺寸和尺寸分布. Ag 2 S纳米粒子的原位引入(优化质量分数为5.0%)有效改善
了PAI涂层的机械性能和摩擦学性能，其摩擦学性能的增强归因于机械强度的提高和诱导转移膜的形成.
关键词: 纳米粒子; 原位合成; 尺寸调控; 机械性能; 摩擦学性能; 转移膜
中图分类号: TH117 文献标志码: A 文章编号: 1004-0595(2021)06–0924–12

In-situ Synthesis of Ag S Nanoparticles to Enhance Mechanical
2
and Tribological Properties of PAI Coating

1
1,2
1,2*
1,2
1*
MA Yanjun , LI Fengying , WAN Hongqi , CHEN Lei , WU Yanping ,
1,2
ZHOU Huidi , CHEN Jianmin 1,2
(1. Key Laboratory of Science and Technology on Wear and Protection of Materials, Lanzhou Institute of Chemical
Physics, Chinese Academy of Sciences, Gansu Lanzhou 730000, China
2. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of
Sciences, Beijing 100049, China)
Abstract: In order to solve the problem of the small size preparation, size control and uniform dispersions of
nanoparticles in the coating, the in-situ synthesized method of silver sulfide (Ag 2 S) nanoparticles assisted by the thermal
decomposition of the single-source precursor in the polyamide-imide (PAI) coating was developed and the particle size
was controlled in present paper. X-ray diffractometer and high-resolution field emission scanning electron microscope
were used to characterize and analyze the phase structure, morphology, particle size and size distribution of the in-situ
synthesized Ag 2 S nanoparticles. The influence of Ag 2 S nanoparticles on the mechanical properties and mechanical
properties of the PAI coatings were investigated in detail. And the enhancement mechanisms and friction-wear
mechanisms were discussed.
Firstly, the concentration, particle size and size distribution of the Ag 2 S nanoparticles were adjusted by controlling the
amount of single-source precursor added in the coating. Generally speaking, the Ag 2 S nanoparticles synthesized in-situ
were uniformly dispersed in the PAI coating, and had high purity as no other impurity phases were generated. When the
single-source precursor content was lower, less Ag 2 S nanoparticles were generated and their particle size was smaller in

Received 18 December 2020, revised 7 February 2021, accepted 9 February 2021, available online 28 November 2021.
*Corresponding author. E-mail: wanhq@licp.cas.cn; Email: wuyp1012@licp.cas.cn, Tel: +86-931-4968422.
The project was supported by the National Natural Science Foundation of China (51775533).
国家自然科学基金项目(51775533)资助.