In this investigation, the friction and wear performance of sub-micron scale boric acid powder lubricant additives were studied during extended duration pin-on-disk experiments. The sub-micron (600 nm) and micro (4 μm) powder additives were created from 250 micron sized crystals using an 1800D SPEX Mill/Mixer. Lubricant combinations were prepared by homogeneously mixing the additives with canola oil in a vortex generator. Three different boric acid additives were investigated by combining 5.0 wt. % of 4 μm boric acid particles, 5.0 wt % of 600 nm sized boric acid particles, and a 5.0 wt % mixture of the 4 μm (2.5 wt. %) and 600 nm (2.5 wt. %) boric acid particles. A fourth additive, 5.0 wt. % of 0.5 – 5μm MoS2 powder, was also purchased and mixed with the canola oil to form a basis for comparison. It was determined that the oil mixed with a combination of micro and sub-micron scale boric acid powder additives exhibited better frictional performance than the oil mixed with micro or sub-micron boric acid additives.
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STLE/ASME 2008 International Joint Tribology Conference
October 20–22, 2008
Miami, Florida, USA
Conference Sponsors:
- Tribology Division
ISBN:
978-0-7918-4336-9
PROCEEDINGS PAPER
Tribological Performance of Sub-Micron Scale Boric Acid Powder Additives for Extended Duration
M. A. Kabir,
M. A. Kabir
Carnegie Mellon University, Pittsburgh, PA
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C. F. Higgs,
C. F. Higgs
Carnegie Mellon University, Pittsburgh, PA
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M. Lovell
M. Lovell
The University of Pittsburgh, Pittsburgh, PA
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M. A. Kabir
Carnegie Mellon University, Pittsburgh, PA
C. F. Higgs
Carnegie Mellon University, Pittsburgh, PA
M. Lovell
The University of Pittsburgh, Pittsburgh, PA
Paper No:
IJTC2008-71261, pp. 237-239; 3 pages
Published Online:
June 5, 2009
Citation
Kabir, MA, Higgs, CF, & Lovell, M. "Tribological Performance of Sub-Micron Scale Boric Acid Powder Additives for Extended Duration." Proceedings of the STLE/ASME 2008 International Joint Tribology Conference. STLE/ASME 2008 International Joint Tribology Conference. Miami, Florida, USA. October 20–22, 2008. pp. 237-239. ASME. https://doi.org/10.1115/IJTC2008-71261
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