Highly Dispersed Ag2S Nanoparticles: In Situ Synthesis, Size Control, and Modification to Mechanical and Tribological Properties towards Nanocomposite Coatings

被引：13

作者：

Ma, Yanjun ^{[1
,2
]}

Zhao, Zhicheng ^{[1
,2
]}

Xian, Yanbo ^{[1
,3
]}

Wan, Hongqi ^{[1
,2
]}

Ye, Yinping ^{[1
,2
]}

Chen, Lei ^{[1
,2
]}

Zhou, Huidi ^{[1
,2
]}

Chen, Jianmin ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, State Key Lab Solid Lubricat, Lanzhou Inst Chem Phys, Lanzhou 730000, Gansu, Peoples R China

[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China

[3] Lanzhou Univ Technol, Dept Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China

来源：

NANOMATERIALS | 2019年 / 9卷 / 09期

基金：

中国国家自然科学基金;

关键词：

in situ synthesis; size control; Ag2S nanoparticles; mechanical properties; tribological properties; nanocomposite coating; TIO2; NANOPARTICLES; OPTICAL-PROPERTIES; SULFIDE; COMPOSITES; BEHAVIORS; WATER; WEAR;

D O I：

10.3390/nano9091308

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A facile in situ synthesis approach and a size control strategy were established to obtain Ag2S nanoparticles in polyimide (PI) composite coatings. Such Ag2S nanoparticles in the composite coatings were characterized, and the effects of the as-obtained Ag2S nanoparticles of different sizes on the mechanical and tribological properties of the nanocomposite coatings were investigated. Results indicate that the in situ synthesized Ag2S nanoparticles exhibited good dispersibility and bimodal and multimodal size distribution in the nanocomposite coatings. The size of the Ag2S nanoparticles can be effectively controlled by adjusting the substituent alkyl chain length of single-source precursor, and these Ag2S nanoparticles exhibited superior improvement to mechanical and tribological properties of the nanocomposite coatings. More importantly, the Ag2S nanoparticles with the proper grain size and bimodal size distribution provided the optimal mechanical and tribological properties for the nanocomposite coatings, and the excellent tribological properties were attributed to their outstanding mechanical properties and strong ability to form a homogenous and stable protective tribofilm.

引用

页数：13

共 45 条

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