High-Temperature Tribological Properties of Barite-Type-Sulfate-Coated Substrates with Different Isoelectric Points

2007 ◽  
pp. 1200-1205
Author(s):  
Takashi Murakami ◽  
K. Umeda ◽  
Shinya Sasaki ◽  
Jia Hu Ouyang
2007 ◽  
Vol 539-543 ◽  
pp. 1200-1205
Author(s):  
Takashi Murakami ◽  
K. Umeda ◽  
Shinya Sasaki ◽  
Jia Hu Ouyang

In the present study, Al2O3, (ZrO2-3mol% Y2O3)-39.6mass% Al2O3, Si3N4 and MgO substrates coated with SrSO4 particles were prepared, and their high-temperature tribological properties were investigated. It was clarified that SrSO4 worked as solid lubricant efficiently against Al2O3 and (ZrO2-3mol% Y2O3)-39.6mass% Al2O3 substrates in the temperature range of room temperature to 1073K in air. In addition, thin SrSO4 films were observed on the wear scars formed on the Al2O3 and (ZrO2-3mol% Y2O3)-39.6mass% Al2O3 substrates.


2021 ◽  
pp. 102550
Author(s):  
Youting Huang ◽  
Xiaowei Li ◽  
Yuanfei Zha ◽  
Xiaolong Zhou ◽  
Dongliang Peng ◽  
...  

2018 ◽  
Vol 35 (8) ◽  
pp. 661-669 ◽  
Author(s):  
Isaac Asempah ◽  
Lihua Yu ◽  
Hongbo Ju ◽  
Dian Yu ◽  
Junhua Xu ◽  
...  

2009 ◽  
Vol 24 (6) ◽  
pp. 888-891 ◽  
Author(s):  
Bingbing Fan ◽  
Tiecui Hou ◽  
Ruiyu Liu ◽  
Li Guan ◽  
Hailong Wang ◽  
...  

2021 ◽  
Vol 55 (6) ◽  
Author(s):  
Aswathi A. Narayanan ◽  
R. S. Sudheesh

Hybrid PTFE/epoxy composites are widely used as materials for self-lubricating spherical bearing which are used in a high-temperature environment. In the present work, zirconium diboride (ZrB2) particles are incorporated to enhance high-temperature tribological properties of PTFE/epoxy composites. Pin on disc experiment is conducted with the aid of design of experiments (DOE) using central composite-response surface methodology (RSM). Under a load of 40 N and 1.25 m/s sliding speed, the optimum content 5.95 vol% of PTFE and 5.05 vol% of ZrB2, yields an ultralow coefficient of friction (COF) in conjunction with a low wear rate of the composite. The addition of ultra-high-temperature ceramic ZrB2 particles and solid lubricant PTFE is found to enhance the thermal conductivity and improve the heat transfer thereby reducing contact temperature. The use of optimum composition of the composite is capable of reducing the wear rate and high local temperature due to friction, implying its potential use as a self-lubricating spherical bearing liner material.


2016 ◽  
Vol 60 (4) ◽  
pp. 663-669
Author(s):  
Ningning Hu ◽  
Na Wu ◽  
Songquan Wang ◽  
Haibo Jiang ◽  
Zhipeng Li

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