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CVI+RMI快速制备C/C-SiC复合材料的摩擦学性能

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  • 宏德新材料科技(葫芦岛) 股份有限公司, 辽宁 葫芦岛 125000
范永中(1984-),硕士研究生,工程师,主要从事碳基及陶瓷基复合材料的研究,电话:18042990908,E-mail:410759743@ qq.com

收稿日期: 2022-07-18

  修回日期: 2022-08-16

  录用日期: 2022-09-25

  网络出版日期: 2023-07-25

Tribological Properties of C/C-SiC Composites Prepared Rapidly by CVI+RMI

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  • Hong De New Material Technology(Huludao)Co.,Ltd.,Huludao 125000,China

Received date: 2022-07-18

  Revised date: 2022-08-16

  Accepted date: 2022-09-25

  Online published: 2023-07-25

摘要

为了研究C/C坯体热处理温度对C/C-SiC复合材料微观结构和摩擦性能的影响,以针刺碳毡为预制体,经化学气相渗透法(CVI)制备C/C坯体,然后采用反应熔体浸渗法(RMI)制备C/C-SiC复合材料。结果表明:C/C坯体高温热处理未改变C/C-SiC复合材料的相组成。C/C坯体热处理温度对C/C-SiC复合材料的摩擦磨损性能产生一定的影响。与1 800℃相比,C/C坯体经2 000℃和2 200℃热处理后,C/C-SiC复合材料的摩擦面更易形成致密的润滑膜,摩擦系数逐渐增大;且随着制动次数的增加,摩擦系数变化幅度变小,刹车稳定。

本文引用格式

范永中, 杨 闯, 陈 贺 . CVI+RMI快速制备C/C-SiC复合材料的摩擦学性能[J]. 材料保护, 2023 , 56(1) : 98 -103 . DOI: 10.16577/j.issn.1001-1560.2023.0016

Abstract

In order to study the effects of C/C green body heat treatment temperature on the microstructure and friction properties of C/C-SiC composites, the C/C green body was prepared by chemical vapor infiltration(CVI) with needled carbon felt as preform, and then the C/C-SiC composites were prepared by reactive melt infiltration(RMI). Results showed that the high temperature heat treatment of C/C green body did not change the phase composition of C/C-SiC composites. The heat treatment temperature of C/C green body had certain influences on the friction and wear properties of C/C-SiC composites. Compared with a heat treatment at 1 800 ℃, the friction surface of C/C-SiC composites was easier to form a dense lubricating film after a heat treatment at 2 000 ℃ and 2 200 ℃, and the friction coefficient increased gradually. Besides, with the increase of braking times, the change of friction coefficient declined and the braking was stable.

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