Journal
WEAR
Volume 478, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.wear.2021.203920
Keywords
Crystallographic shear; Nanoindentation; Raman; Solid lubrication
Funding
- European Commission [316232]
- Academy of Finland via Graduate School for Advanced Materials and Processes [118728]
- Academy of Finland (AKA) [118728, 118728] Funding Source: Academy of Finland (AKA)
Ask authors/readers for more resources
Oxygen vacancies in WO2.9 create easy shear planes, which can reduce friction in boundary lubrication conditions. The study found that the composite n-ZrO2 + 10 vol% WO2.9 had the lowest coefficient of friction and wear rate, thanks to WO2.9 acting as a solid lubricant.
Oxygen vacancies in WO2.9 yield to formation of easy shear planes and they can potentially be applied in boundary lubrication conditions for reducing friction. Mechanical and tribological properties of pulsed electric current sintered monolithic WO2.9 were studied by nanoindentation and nanoscratch, and the composites of ZrO2 + WO2.9 with reciprocating wear tests. Hardness of WO2.9 at 25 degrees C was similar to 11 GPa and reduced elastic modulus was similar to 150 GPa. The ploughing dominated coefficient of friction as between 0.09 and 0.24 when measured against a Berkovich diamond tip. The composite n-ZrO2 + 10 vol% WO2.9 presented the lowest CoF, and wear rate 10(-10) mm(3)/Nm measured under 10 N load against alumina ball (6 mm diameter) due to WO2.9 acting as a solid lubricant.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
