Moderation in Temperature Dependence on Counter Frictional Coefficient and Prevention of Wear of C/C Composites by Synthesizing SiC around Surface and Internal Vacancies
The aim of this study is to moderate the dependence of counter frictional coefficient on temperature between counter surfaces and to reduce the wear of C/C composites at low temperature. To modify the C/C composites, Silica (SiO2) powders were added into phenolic resin for carbon precursor. The preform plate of the precursor of C/C composites was prepared by conventional filament winding method. The C/C composites plates were obtained by carbonizing preform plate at 2200 °C under an argon atmosphere. At that time, the silicon carbides (SiC) were synthesized around the surfaces and the internal vacancies of the C/C composites. The frictional coefficient on the counter surfaces and specific wear volumes of the C/C composites were measured by our developed frictional test machine like pin-on disk type. The XRD indicated that SiC was synthesized in the body of C/C composite fabricated by current method. The results of friction test showed that coefficient of friction of unmodified C/C composites have temperature dependence when the test condition was changed. In contrast, frictional coefficient of the C/C composite modified with SiO2 powders was almost constant at about 0.27 when the temperature condition was changed from Room Temperature (RT) to 300 °C. The specific wear rate decreased from 25×10-6 mm2/N to 0.1×10-6 mm2/N. The observations of the surfaces after friction tests showed that the frictional surface of the modified C/C composites was covered with a film produced by the friction. This study found that synthesizing SiC around surface and internal vacancies of C/C composites was effective to moderate the dependence on the frictional coefficient and reduce to the abrasion of C/C composites.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1129658Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF
 W.Buchgraber, Carbon/Carbon Composite Friction Discs for Aerospace, Mat.-wiss. u. Werkstofftech. 34, pp.317–321, 2003
 Norio Iwashita, Yoshihiro Sawada, Effect of Oxidative Surface and Sizing Treatments of Carbon Fiber on Tensile Strength of C/C Composites, Journal of Society of Material Science, Japan, Vol.58, No.5, pp.402-407, 2009
 Haytam Kasem, Sylvie Bonnamy, Yves Berthier, Pascale Jacquemard, Fiber–matrix unbonding and plastic deformation in C/C composites under tribological loading, Wear Vol.269, pp.104–111, 2010
 Xuan Zhou, Dongmei Zhu, Qiao Xie, Fa Luo, Wancheng Zhou, Friction and wear properties of C/C–SiC braking composites, Ceramics International Vol.38, pp.2467–2473, 2012
 Christopher Byrne, Zhiyuan Wang, Inﬂuence of thermal properties on friction performance of carbon composites, Carbon Vol.39 pp. 1789–1801, 2012
 Kiyotaka Obunai, Kazuya Okubo, Toru Fujii, Synthesization of CNT on Surface of C/C Composites to Stabilize the Coefficient of Friction through a Wide Environmental Temperature Range, Journal of Materials Science Research; Vol.2, No.1; pp.15-22, 2013
 Xiang Zhang, Ke-Zhi Lin, He-Jun Li, Ye-Wei Fu, Jie Fei, Tribological and mechanical properties of glass ﬁber reinforced paper-based composite friction material, Tribology International Vol.69, pp.156–167 2014
 Lu Yafei, A combinatorial approach for automotive friction materials: Effects of ingredients on friction performance, Composites Science and Technology Vol.66, Issues 3-4, pp.591-598, 2006.