Hydrophobicity and tribological properties of Al2O3/PTFE composite coating

被引：3

作者：

Ji, Ruo-Nan ^{[1
,2
]}

Liu, Chen-Xu ^{[1
,2
]}

Zhang, Jin ^{[1
,2
]}

Zhang, Shu-Guang ^{[1
,2
]}

Zhang, Le ^{[1
,2
]}

Lian, Yong ^{[1
,2
]}

机构：

[1] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China

[2] Beijing Key Lab Corros Eros & Surface Technol, Beijing 100083, Peoples R China

来源：

RARE METALS | 2023年 / 42卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Titanium alloy; Al2O3; Cathode plasma electrolytic deposition; PTFE; Hydrophobicity; Wear resistance; TITANIUM-ALLOYS; THIN-FILMS; SURFACE; PTFE; MICROSTRUCTURE; DEPOSITION; EVOLUTION; ALUMINUM; FRICTION; DESIGN;

D O I：

10.1007/s12598-018-1149-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Al2O3/polytetrafluoroethylene (PTFE) composite coating was prepared on titanium alloy by cathode plasma electrolytic deposition (CPED) and impregnation method, to improve the hydrophobicity and tribological properties. Scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS) analysis of the coating indicate that PTFE penetrates into the interior of the coating and is well bonded to titanium alloy substrate by cross-linking with Al2O3 ceramic coating. The contact angles were measured by contact angle measurement, and the tribological properties of the composite coating were evaluated by sliding wear test. The surface of the composite coating is found to possess good hydrophobicity with a water contact angle of 140 degrees. The results also indicate an improved tribological properties of Al2O3/PTFE composite coating at room temperature with a steady friction coefficient as low as 0.05. The self-lubricating anti-wear composite coating is expected to solve fouling problems and poor wear resistance of titanium alloys.

引用

页码：3870 / 3876

页数：7

共 30 条

[1] Fabrication of amphiphobic surface by using titanium anodization for large-area three-dimensional substrates [J].