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摘要: 采用化学镀法获取NiP镀层炭纤维。通过SEM和XRD考察了未镀和已镀NiP炭纤维表面形貌和微观结构的变化，借助EDS研究了其表面元素的变化，利用Weibull统计分布探讨了NiP镀层对炭纤维单丝抗拉强度的影响。结果表明：NiP镀层使炭纤维表面缺陷减少，外界应力经过NiP镀层向纤维传递，改变了炭纤维的断裂机理。当镀层厚度为0.149μm时，抗拉强度达到最大值3.10GPa，比未镀的增加8.77%，说明NiP镀层能够提高炭纤维抗拉强度。
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关键词:
- 炭纤维 /
- Ni-P镀层 /
- Weibull统计法
Abstract: Ni-P coated carbon fibers were prepared by a chemical plating method. The microstructures of uncoated and coated carbon fibers were investigated by SEM and XRD, and the surface atom compositions were studied by EDS. The tensile strength of the carbon fibers was analyzed by a Weibull statistical method. Results show that the number of defects on the carbon fiber surfaces decreases after Ni-P coating. When the thickness of the NiP coating reaches 0.149μm, the tensile strength of carbon fibers exhibits a maximum value of 3.10GPa, a 8.77% increase compared to the uncoated carbon fibers, which might be ascribed to the elimination of a number of surface defects by the NiP coating.-
Key words:
- Carbon fibers /
- Ni-P coating /
- Weibull statistical method
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