Sample Preparation Method for X-Ray Structure Analysis of Carbon Fiber Crystal Structural Parameters after Various Heat Treatments

Verbets, D. B.; Bubnenkov, I. A.; Dzidziguri, É. L.; Samoilov, V. M.; Stepareva, N. N.

doi:10.1007/s10692-020-10153-2

Cited by 1 publication

(1 citation statement)

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“…The contact between CF and MgO might lead to the formation of possible bonds with stronger bonding strength than hydrogen bonds, which was certainly beneficial to the mechanical properties of FLJ joints. The literature , reported that the dominant structural characteristics of CF were parking of fibrils and carbon ribbons, in which the fibrils provided mechanical support, while the carbon ribbon served as the functional structure that determined the chemical properties of CF. For carbon ribbon in CF, Warren and Franklin theorized the turbostrate model of graphitization to describe its crystalline regions.…”

Section: Resultsmentioning

confidence: 99%

Enhancing Interfacial Reliability of Metal–Thermoplastic Hybrid Joints via Adding Carbon Fiber and Adjusting Welding Heat Input

Luo

Liu

et al. 2021

ACS Appl. Mater. Interfaces

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Interfacial structures govern the reliability of metal−thermoplastic hybrid joints used in the aerospace industry. The current work demonstrated by experimental methods and density functional theory (DFT) calculations that introduction of carbon fibers (CFs) enhanced the mechanical properties and weakened the corrosion resistance of polyamide 6 (PA6)/A6061-T6 (6061) joints. The bonding strength of typical PA6/6061 joints was increased by 33.70% with the introduction of CF. However, the differences in intrinsic work functions of the CF and various phases within 6061 led to the formation of serious cracks at CFRPA6/ 6061 interfaces and heavy corrosion on 6061 surfaces, corresponding to the decreased corrosion resistance of PA6/6061 joints.Herein, we present a potential solution to adjust the welding heat input to enhance metal/thermoplastic interfacial reliability. With a rotation speed of 400 mm/min during friction lap joining (FLJ), the fabricated CFRPA6/6061 joint could achieve a strong interface with high strength (bonding strength = 1.730 kN) and relative corrosion resistance (corrosion rate < 0.1 mm/a). The results provide a reliable explanation for the effect of CF on mechanical properties and corrosion resistance of CFRPA6/6061 joints. Furthermore, the knowledge gained in this work will benefit future research in the optimization of processes to improve the reliability of metal− thermoplastic hybrid structures.

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Section: Resultsmentioning

confidence: 99%