✦ LIBER ✦

Synthesis and tribological properties of laminated Ti3SiC2 crystals

✍ Scribed by Qiong Wu; Changsheng Li; Hua Tang

Publisher: John Wiley and Sons
Year: 2010
Tongue: English
Weight: 718 KB
Volume: 45
Category: Article
ISSN: 0232-1300
DOI: 10.1002/crat.201000246

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✦ Synopsis

Ti 3 SiC 2 crystal, growth mechanism, lubrication additive, tribological properties. Laminated Ti 3 SiC 2 crystals are prepared of Ti, Si, C and Al powders by the method of hot isostatic pressing with NaCl additive in argon at 1350 °C. The laminated morphology of Ti 3 SiC 2 is presented through the SEM and TEM observations. The results of high resolution transmission electron microscope (HRTEM) and selected area electron diffraction (SAED) patterns combined, it can be seen that the layers are of Ti 3 SiC 2 crystals. The growth mechanism of Ti 3 SiC 2 crystals, controlled by two-dimensional nucleation, is also explained. The tribological properties of Ti 3 SiC 2 crystals as additives in HVI500 base oil are investigated by a UMT-2 ball-on-plate friction and wear tester. The study shows that under determinate conditions, the friction coefficient of the base oil containing Ti 3 SiC 2 crystals is lower than that of pure base oil, and it decreases with the increase of mass percent of Ti 3 SiC 2 nanolayers when its proportion is lower than 5wt.%.

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