Journal
MATERIALS LETTERS
Volume 58, Issue 5, Pages 790-793Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2003.07.013
Keywords
bismuth; nanoparticle; preparation; characteristic; tribology
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In this paper, we report a simple method to prepare bismuth nanoparticles from bulk bismuth. Bismuth nanoparticles of near spherical shape have been characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), and other techniques. Bismuth nanoparticles have mean diameter of 40-50 nm and exhibit the same crystal structure as the bulk bismuth. The surface of bismuth nanoparticle has been oxidized and the thermal analysis shows that bismuth samples contain at least 9 wt.% organic solvent and 76 wt.% metallic bismuth. The tribological property of bismuth nanoparticles as additives in oil is evaluated on a four-ball tester. The results show that bismuth nanoparticles exhibit good performance in wear. (C) 2003 Elsevier B.V. All rights reserved.
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