| Fe_xSi_y改性C/C-SiC制动材料的制备及其性能 |
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| 引用本文： | 肖鹏,周伟,李专,熊翔.Fe_xSi_y改性C/C-SiC制动材料的制备及其性能[J].中南大学学报(自然科学版),2011(9). |
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| 作者姓名： | 肖鹏 周伟 李专 熊翔 |
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| 作者单位： | 中南大学粉末冶金国家重点实验室; |
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| 基金项目： | 湖南省科技重大专项项目(2009FJ1011-3); 中南大学研究生学位论文创新基金资助项目(1960-71131100006) |
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| 摘 要： | 以针刺整体炭毡为预制体,采用化学气相渗透法(CVI)增密制备C/C多孔体,采用反应熔体浸渗法(RMI),将Fe与Si同时熔渗进C/C坯体中制备FexSiy改性C/C-SiC复合材料。研究FexSiy改性C/C-SiC复合材料的组织结构、力学性能和摩擦磨损性能。研究结果表明:硅铁化合物被SiC基体包围填充于C/C坯体孔隙中;FexSiy改性C/C-SiC复合材料的弯曲强度为189.65 MPa,垂直和平行摩擦面的压缩性能分别为296.93 MPa和201.32 MPa;分别采用30Cr钢和自身材料作对偶时,FexSiy改性C/C-SiC复合材料的平均摩擦因数均为0.24左右,线磨损均小于3.5μm.面-1.次-1,但与铬钢对摩静系数明显增大,而与自身对摩制动曲线出现明显翘尾现象,其摩擦磨损过程是由磨粒磨损、黏着磨损和氧化磨损相互作用的结果。
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| 关 键 词： | FexSiy改性C/C-SiC复合材料 微观结构 力学性能 摩擦磨损性能 |
Manufacture and characterization of Fe_xSi_y modified C/C-SiC composites |
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| XIAO Peng,ZHOU Wei,LI Zhuan,XIONG Xiang.Manufacture and characterization of Fe_xSi_y modified C/C-SiC composites[J].Journal of Central South University:Science and Technology,2011(9). |
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| Authors: | XIAO Peng ZHOU Wei LI Zhuan XIONG Xiang |
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| Institution: | XIAO Peng,ZHOU Wei,LI Zhuan,XIONG Xiang(State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China) |
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| Abstract: | FexSiy modified C/C-SiC composites were fabricated by infiltrating Fe and Si into C/C performs that were prepared by chemical vapor infiltration(CVI).The microstructure and mechanical and tribological properties of FexSiy modified C/C-SiC composites were investigated.The results show that FeSi and FeSi2 are surrounded by silicon carbide matrix filled in pores of C/C performs.The FexSiy modified C/C-SiC composites exhibit excellent mechanical properties and tribological characteristics.The average friction c... |
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| Keywords: | FexSiy modified C/C-SiC composites microstructure mechanical tribological properties |
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