简介概要

MEVVA磁过滤等离子技术制备的Fe纳米颗粒薄膜结构

图书来源:二元合金相图及中间相晶体结构 二元合金相图及中间相晶体结构

作 者:唐仁政 田荣璋

出版时间:2009-05

定 价:320元

图书ISBN:978-7-81105-831-4

出版单位:中南大学出版社

详情信息展示

Preparation and properties of C/C-SiC brake composites fabricated by warm compacted-in situ reaction

Zhuan Li,Peng Xiao,and Xiang Xiong State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China

摘 要:<正>Carbon fibre reinforced carbon and silicon carbide dual matrix composites(C/C-SiC) were fabricated by the warm compacted-in situ reaction.The microstructure,mechanical properties,tribological properties,and wear mechanism of C/C-SiC composites at different brake speeds were investigated.The results indicate that the composites are composed of 58wt%C,37wt%SiC,and 5wt%Si.The density and open porosity are 2.0 g.cm-3 and 10%,respectively.The C/C-SiC brake composites exhibit good mechanical properties.The flexural strength can reach up to 160 MPa,and the impact strength can reach 2.5 kJ.m-2.The C/C-SiC brake composites show excellent tribological performances.The friction coefficient is between 0.57 and 0.67 at the brake speeds from 8 to 24 m·s-1.The brake is stable,and the wear rate is less than 2.02×10-6 cm3·J-1.These results show that the C/C-SiC brake composites are the promising candidates for advanced brake and clutch systems.

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