TY - JOUR
T1 - The preparation of CeF3 nanocluster capped with oleic acid by extraction method and application to lithium grease
AU - Wang, Libo
AU - Zhang, Ming
AU - Wang, Xiaobo
AU - Liu, Weimin
PY - 2008
Y1 - 2008
N2 - CeF3 nanocluster surface-capped with oleic acid (coded as OA-CeF3) were prepared using extraction method. The resulting OA-CeF3 nanocluster was characterized by means of transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transformation infrared spectrometry (FTIR), and X-ray photoelectron spectroscopy (XPS). The effect of the OA-CeF3 nanocluster as an additive in synthetic lithium grease was investigated using a four-ball friction and wear tester. It was found that the as-prepared OA-CeF3 nanocluster had a broad size distribution, with the average diameter to be about 20 nm, which was confirmed by both the XRD and TEM analytical results. The oleic acid as the capping agent was chemically bonded to the CeF3 nanocores via strong chemical interaction. The OA-CeF3 nanocluster as the additive led to an obvious improvement in the antiwear and extreme pressure properties of the synthetic lithium grease. However, the OA-CeF3 nanocluster as the additive had little effect on the friction-reducing behavior of the lithium grease.
AB - CeF3 nanocluster surface-capped with oleic acid (coded as OA-CeF3) were prepared using extraction method. The resulting OA-CeF3 nanocluster was characterized by means of transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transformation infrared spectrometry (FTIR), and X-ray photoelectron spectroscopy (XPS). The effect of the OA-CeF3 nanocluster as an additive in synthetic lithium grease was investigated using a four-ball friction and wear tester. It was found that the as-prepared OA-CeF3 nanocluster had a broad size distribution, with the average diameter to be about 20 nm, which was confirmed by both the XRD and TEM analytical results. The oleic acid as the capping agent was chemically bonded to the CeF3 nanocores via strong chemical interaction. The OA-CeF3 nanocluster as the additive led to an obvious improvement in the antiwear and extreme pressure properties of the synthetic lithium grease. However, the OA-CeF3 nanocluster as the additive had little effect on the friction-reducing behavior of the lithium grease.
KW - A. Fluorides
KW - A. Nanostructures
KW - B. Chemical synthesis
KW - C. X-ray diffraction
KW - D. Mechanical properties
UR - http://www.scopus.com/inward/record.url?scp=44849103679&partnerID=8YFLogxK
U2 - 10.1016/j.materresbull.2007.08.024
DO - 10.1016/j.materresbull.2007.08.024
M3 - 文章
AN - SCOPUS:44849103679
SN - 0025-5408
VL - 43
SP - 2220
EP - 2227
JO - Materials Research Bulletin
JF - Materials Research Bulletin
IS - 8-9
ER -