Diffusion between glass and metals for optical fiber preform extrusion

Felicia Yan Xin Yeo; Zhifeng Zhang; Dileep Kumar Chakkathara Janardhanan Nair; Yilei Zhang

doi:10.1117/12.2190640

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17 July 2015 Diffusion between glass and metals for optical fiber preform extrusion

Felicia Yan Xin Yeo, Zhifeng Zhang, Dileep Kumar Chakkathara Janardhanan Nair, Yilei Zhang

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Proceedings Volume 9524, International Conference on Optical and Photonic Engineering (icOPEN 2015); 95242S (2015) https://doi.org/10.1117/12.2190640
Event: International Conference on Optical and Photonic Engineering (icOPEN2015), 2015, Singapore, Singapore

Abstract

When silica is extruded, diffusion of metal atoms into silica results contamination to the silica being heated, and thus is a serious concern for the glass extrusion process, such as extrusion of glass fiber preform. This paper examines diffusion between fused silica and two high strength metals, the stainless steel SS410 and the superalloy Inconel 718, at 1000 °C and under the normal atmosphere condition by SEM and Electron Dispersion Spectrum. It is found that diffusion occurs between silica and SS410, and at the same time, SS410 is severely oxidized during diffusion experiment. On the contrary, the diffusion between Inconel 718 and silica is unnoticeable, suggesting excellent high temperature performance of Inconel 718 for glass extrusion.

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Felicia Yan Xin Yeo, Zhifeng Zhang, Dileep Kumar Chakkathara Janardhanan Nair, and Yilei Zhang "Diffusion between glass and metals for optical fiber preform extrusion", Proc. SPIE 9524, International Conference on Optical and Photonic Engineering (icOPEN 2015), 95242S (17 July 2015); https://doi.org/10.1117/12.2190640

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