Effects of Texture Density on the Tribological Properties of PEO/PTFE Coatings Formed on Aluminum Alloys

Author(s):  
Cheng Lu ◽  
Jinhua Ding ◽  
Peiying Shi ◽  
Junhong Jia ◽  
Erqing Xie ◽  
...  

Author(s):  
Ying Yan ◽  
Xuelin Lei ◽  
Yun He

The effect of nanoscale surface texture on the frictional and wear performances of nanocrystalline diamond films under water-lubricating conditions were comparatively investigated using a reciprocating ball-on-flat tribometer. Although the untreated nanocrystalline diamond film shows a stable frictional state with an average friction coefficient of 0.26, the subsequent textured films show a beneficial effect on rapidly reducing the friction coefficient, which decreased to a stable value of 0.1. Furthermore, compared with the nanocrystalline diamond coating, the textured films showed a large decreasing rate of the corresponding ball wear rate from 4.16 × 10−3 to 1.15 × 10−3 mm3/N/m. This is due to the fact that the hydrodynamic fluid film composed of water and debris can provide a good lubrication environment, so the entire friction process has reached the state of fluid lubrication. Meanwhile, the surface texture can greatly improve the hydrophilicity of the diamond films, and as the texture density increases, the water contact angle decreases from 94.75° of the nanocrystalline diamond film to 78.5° of the textured films. The proper textured diamond film (NCD90) exhibits superior tribological properties among all tested diamond films, such as short run-in period, low coefficient of friction, and wear rate.



Wear ◽  
2021 ◽  
pp. 203709
Author(s):  
Marek Szkodo ◽  
Alicja Stanisławska ◽  
Aleksandr Komarov ◽  
Łukasz Bolewski


2021 ◽  
pp. 68-77
Author(s):  
V.M. Serpova ◽  
◽  
D.V. Sidorov ◽  
A.N. Nyafkin ◽  
E.I. Kurbatkina ◽  
...  

A review of scientific and technical literature in the field of hybrid metal composite materials (MMС) based on aluminum alloys is presented. The most widespread at present matrix aluminum alloys and reinforcing components for the manufacture of hybrid MMCs are considered. The main methods of manufacturing MMCs are shown, as well as the effect of matrix aluminum alloys and reinforcing components on the mechanical, thermophysical and tribological properties of hybrid MMCs. A comparison of the characteristics of hybrid MCMs with matrix alloys and MCMs of similar systems is given.



Vacuum ◽  
1999 ◽  
Vol 52 (1-2) ◽  
pp. 187-192 ◽  
Author(s):  
R.J Rodrıguez ◽  
A Sanz ◽  
A Medrano ◽  
Ja Garcia-Lorente


Author(s):  
G. Mounika

Zinc-aluminium alloys are alloys whose main ingredients stay zinc and aluminium. Other alloying elements clasp magnesium and copper .Zinc Aluminum Alloys over the past decayed are occupying attention of both researches and industries as a promising material for tribological applications. At this moment commercially available Zinc-Aluminium alloys and bearing bronzes due to good cost ability and unique combination of properties. They can also be deliberated as competing material for cast iron, plastics and even for steels. It has been shown that the addition of alloying elements including copper, silicon, magnesium, manganese and nickel can improve the mechanical and tribological properties of zinc aluminum alloys. This alloy has still found limited applications encompassing high stress conditions due to its lower creep resistance, compared to traditional aluminum alloys and other structural materials. This has resulted in major loss of market potential for those alloy otherwise it is excellent material. The aim of this paper is to measure the coefficient of friction and wear under different operating conditions for material with silicon content. Then wear equation will be found out for all the materials experimented under various conditions. In this paper there is discussion of the effect of Silicon on tribological properties of aluminium based Zinc alloy by experiment as well as Ansys software based and compares the same.







2015 ◽  
Vol 36 (2) ◽  
pp. 103-111 ◽  
Author(s):  
B. Y. Sachek ◽  
A. M. Mezrin ◽  
T. I. Muravyeva ◽  
O. O. Stolyarova ◽  
D. L. Zagorskiy ◽  
...  


2021 ◽  
Vol 2020 (1) ◽  
pp. 012013
Author(s):  
Y P Chang ◽  
L M Chu ◽  
C T Liu ◽  
J C Wang ◽  
K W Chen


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