The effect of gamma ray irradiation on PAN-based intermediate modulus carbon fibers

Laser induced graphitization of PAN-based carbon fibers

“…16 Nevertheless, it should be noted that some damages would be generated by carbon atom displacement or sputtering and structural order would be disturbed also, when the uences of g-ray exceeded a specic value. 17,18 Photothermal and photochemical effects are frequently considered in laser irradiation process. In the present study, intermediate infrared CO 2 laser with a long wavelength of 1.6 mm was applied to the graphitization of CFs.…”

“… 16 Nevertheless, it should be noted that some damages would be generated by carbon atom displacement or sputtering and structural order would be disturbed also, when the fluences of γ-ray exceeded a specific value. 17,18 …”

Small angle X-ray scattering study of microvoid evolution and pertinence of microvoid and mechanical properties in γ-irradiated CFs

“…Xiao et al 8 deemed that the crosslinking between graphite layers caused by γ-irradiation was the main reason for improvement of mechanical property. Li 9 and Xu 10 et al reported that the improvement of graphitization degree and optimizing of crystallite size collectively led to the enhance of mechanical property. Obviously, there was not any research in previous literatures to report the evolution of microvoid for γ-irradiated CFs.…”

In situ characterization of surface‐layer structure evolution in γ‐irradiated carbon fibers by X‐ray photoelectron spectroscopy combined with argon‐ion sputtering

“…Recently, γ-irradiation technology, as a novel method to simultaneously improve surface activities and mechanical properties of carbon fibers, has attracted widespread attention because of its low cost, high productivity, and simple process [1][2][3][4][5]. The surface-layer structure evolution plays an important effect on the surface activities and mechanical properties of γ-irradiated carbon fibers [6].…”