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Synthesis and tribological properties of laminated Ti 3 SiC 2 crystals
Author(s) -
Wu Qiong,
Li Changsheng,
Tang Hua
Publication year - 2010
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201000246
Subject(s) - materials science , high resolution transmission electron microscopy , selected area diffraction , tribology , transmission electron microscopy , nucleation , base oil , electron diffraction , composite material , base (topology) , diffraction , scanning electron microscope , chemical engineering , nanotechnology , chemistry , optics , mathematical analysis , physics , mathematics , organic chemistry , engineering
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. %. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)