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SiC Nanowire–Si3N4 Nanobelt Interlocking Interfacial Enhancement of Carbon Fiber Composites with Boosting Mechanical and Frictional Properties
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-04-26 , DOI: 10.1021/acsami.1c04682 Leilei Zhang , Yue Zhang , Feiyan Zhu , Zejun Zhao , Yong Yang , Hongchao Sheng 1 , Xianghui Hou 2 , Hejun Li
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-04-26 , DOI: 10.1021/acsami.1c04682 Leilei Zhang , Yue Zhang , Feiyan Zhu , Zejun Zhao , Yong Yang , Hongchao Sheng 1 , Xianghui Hou 2 , Hejun Li
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Carbon fiber composites composed of carbon fiber and pyrolytic carbon (PyC) matrix have great potential application in the brakes of aircrafts, where the combination of high mechanical strength and excellent frictional properties are required. In this work, two-component silicon-based interlocking enhancements were designed and constructed into carbon fiber composites for boosting the mechanical and frictional properties. Specially, silicon carbide nanowires (SiCnws) and silicon nitride nanobelts (Si3N4nbs) could form interlocking architectures, where SiCnws are rooted firmly on the carbon fiber surface in the radial direction and Si3N4nbs integrate the PyC matrix with carbon fibers together via a networked shape. SiCnws–Si3N4nbs not only refine the PyC matrix but also promote the bonding of the fiber/matrix interface and the cohesion strength of the PyC matrix, thus enhancing the mechanical and frictional properties. Benefiting from the SiCnws–Si3N4nbs synergistic effect and interlocking enhancement mechanism, the interlaminar shear strength and compressive strength of carbon fiber composites increased by 88.41% and 73.40%, respectively. In addition, the friction coefficient and wear rate of carbon fiber composites decreased by 39.50% and 69.88%, respectively. This work could open up an interlocking enhancement strategy for efficiently fabricating carbon fiber composites and promoting mechanical and frictional properties that could be used in the brakes of aircrafts.
中文翻译：
具有增强的机械和摩擦性能的碳化硅纳米线–Si 3 N 4纳米带互锁界面增强碳纤维复合材料
由碳纤维和热解碳（PyC）基体组成的碳纤维复合材料在飞机制动器中具有巨大的潜在应用，在这种制动器中，需要兼具高机械强度和优异的摩擦性能。在这项工作中，基于硅的两组分互锁增强件被设计并构建到碳纤维复合材料中，以增强机械性能和摩擦性能。特别地，碳化硅纳米线（SiCnws）和氮化硅纳米带（Si 3 N 4 nbs）可以形成互锁结构，其中SiCnws沿径向牢固地扎在碳纤维表面上，而Si 3 N 4 nbs将PyC基体与碳结合纤维通过网状形状连接在一起。碳化硅3 N 4 nbs不仅细化了PyC基体，而且还促进了纤维/基体界面的结合以及PyC基体的内聚强度，从而提高了机械性能和摩擦性能。受益于SiCnws–Si 3 N 4通过nbs的协同作用和互锁增强机制，碳纤维复合材料的层间剪切强度和抗压强度分别提高了88.41％和73.40％。此外，碳纤维复合材料的摩擦系数和磨损率分别降低了39.50％和69.88％。这项工作可以为提高碳纤维复合材料的制造效率和机械性能和摩擦性能开辟一种联锁增强策略，从而可以用于飞机的制动器。
更新日期：2021-05-05
中文翻译：
具有增强的机械和摩擦性能的碳化硅纳米线–Si 3 N 4纳米带互锁界面增强碳纤维复合材料
由碳纤维和热解碳（PyC）基体组成的碳纤维复合材料在飞机制动器中具有巨大的潜在应用，在这种制动器中，需要兼具高机械强度和优异的摩擦性能。在这项工作中，基于硅的两组分互锁增强件被设计并构建到碳纤维复合材料中，以增强机械性能和摩擦性能。特别地，碳化硅纳米线（SiCnws）和氮化硅纳米带（Si 3 N 4 nbs）可以形成互锁结构，其中SiCnws沿径向牢固地扎在碳纤维表面上，而Si 3 N 4 nbs将PyC基体与碳结合纤维通过网状形状连接在一起。碳化硅3 N 4 nbs不仅细化了PyC基体，而且还促进了纤维/基体界面的结合以及PyC基体的内聚强度，从而提高了机械性能和摩擦性能。受益于SiCnws–Si 3 N 4通过nbs的协同作用和互锁增强机制，碳纤维复合材料的层间剪切强度和抗压强度分别提高了88.41％和73.40％。此外，碳纤维复合材料的摩擦系数和磨损率分别降低了39.50％和69.88％。这项工作可以为提高碳纤维复合材料的制造效率和机械性能和摩擦性能开辟一种联锁增强策略，从而可以用于飞机的制动器。
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