Prospects of Improving the Tribotechnical Characteristics of Titanium Composites

Titanium-based composites containing MoS 2 , MoSe 2 , CaF 2 , and BN solid lubricants are synthesized. Their tribological characteristics are investigated without lubrication at different sliding velocities (0.5, 1, 2, 4, 6, and 15 m/sec) and low pressures (0.27, 0.54, 0.8, 1.1, 1.35, 1.47, and 2.7...

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Bibliographic Details
Published in:Powder metallurgy and metal ceramics 2013-03, Vol.51 (11-12), p.687-696
Main Authors: Kostornov, A. G., Fushchich, O. I., Chevychelova, T. M., Varchenko, V. T., Kostenko, A. D.
Format: Article
Language:English
Subjects:
Antifriction
Ceramics
Characterization and Evaluation of Materials
Chemical properties
Chemistry and Materials Science
Composite materials industry
Composites
Friction
Glass
Low pressure
Lubrication
Lubrication and lubricants
Materials Science
Metallic Materials
Molybdenum disulfide
Natural Materials
Sliding
Titanium
Toy industry
Tribology
Wear
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Summary:Titanium-based composites containing MoS 2 , MoSe 2 , CaF 2 , and BN solid lubricants are synthesized. Their tribological characteristics are investigated without lubrication at different sliding velocities (0.5, 1, 2, 4, 6, and 15 m/sec) and low pressures (0.27, 0.54, 0.8, 1.1, 1.35, 1.47, and 2.7 MPa) in air. In view of the high friction coefficient and large wear, the composite materials cannot be proposed as antifriction ones for operation at small sliding velocities and low pressures. The titanium-based composites are promising as antifriction materials at an increased sliding velocity (15 m/sec) and low pressures when their friction coefficients range from 0.3 to 0.36 and wear ranges from 1.91 to 68.3 mg/km. In dry friction at a high sliding velocity in air, the temperature of their working surface increases resulting from the formation of titanium oxides and then a dense secondary lubricating microheterogeneous film. The composition and structure of the secondary films differ from those of the starting materials and determine their antifriction properties and friction performance.
ISSN:1068-1302
1573-9066
DOI:10.1007/s11106-013-9484-z