Enhanced braking performance of copper metal matrix composites incorporating fine mosaic pitch coke when mated with 30CrMnVA and C/C-SiC

IF 6.1 1区 工程技术 Q1 ENGINEERING, MECHANICAL
Yuxuan Xu , Donglin Liu , Qi Chen , Peiyu Zhou , Ziyi Liu , Xing Wang , Minwen Deng , Haibin Zhou , Yong Han , Pingping Yao
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引用次数: 0

Abstract

By substituting 10 wt% of conventional graphite particles, pitch coke particles with fine mosaics demonstrate superior performance in enhancing the braking properties of copper metal matrix composites (CMMCs) operating at various conditions. When mated with C/C-SiC, the coefficient of friction increases by 18.6 % at low speeds and 38.8 % at high braking speeds, along with a significant enhancement in wear resistance across various counterparts. This improvement is attributed to the incorporation of pitch coke with fine mosaics and superior mechanical properties, which not only imparts high thermal capacity and mechanical strength to the CMMCs but also fosters a synergistic interaction between pitch coke and the iron oxide layer, stabilizing the friction layer.
与 30CrMnVA 和 C/C-SiC 配合使用时,掺入细镶嵌沥青焦的铜金属基复合材料的制动性能得到增强
通过替代 10 wt%的传统石墨颗粒,具有细小马赛克的沥青焦颗粒在提高铜金属基复合材料(CMMC)在各种条件下的制动性能方面表现出了卓越的性能。当与 C/C-SiC 配合使用时,低速摩擦系数增加了 18.6%,高速制动时增加了 38.8%,同时在各种对应条件下的耐磨性也显著增强。这种改善归功于沥青焦的加入,沥青焦具有精细的镶嵌和卓越的机械性能,不仅为 CMMC 带来了高热容量和机械强度,还促进了沥青焦和氧化铁层之间的协同作用,稳定了摩擦层。
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来源期刊
Tribology International
Tribology International 工程技术-工程:机械
CiteScore
10.10
自引率
16.10%
发文量
627
审稿时长
35 days
期刊介绍: Tribology is the science of rubbing surfaces and contributes to every facet of our everyday life, from live cell friction to engine lubrication and seismology. As such tribology is truly multidisciplinary and this extraordinary breadth of scientific interest is reflected in the scope of Tribology International. Tribology International seeks to publish original research papers of the highest scientific quality to provide an archival resource for scientists from all backgrounds. Written contributions are invited reporting experimental and modelling studies both in established areas of tribology and emerging fields. Scientific topics include the physics or chemistry of tribo-surfaces, bio-tribology, surface engineering and materials, contact mechanics, nano-tribology, lubricants and hydrodynamic lubrication.
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