Rapidly solidified aluminium for optical applications

Guido P. H. Gubbels; Bart W. H. van Venrooy; Albert J. Bosch; Roger Senden

doi:10.1117/12.788766

23 July 2008 Rapidly solidified aluminium for optical applications

Guido P. H. Gubbels, Bart W. H. van Venrooy, Albert J. Bosch, Roger Senden

Proceedings Volume 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation; 70183A (2008) https://doi.org/10.1117/12.788766
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

This paper present the results of a diamond turning study of a rapidly solidified aluminium 6061 alloy grade, known as RSA6061. It is shown that this small grain material can be diamond turned to smaller roughness values than standard AA6061 aluminium grades. Also, the results are nearly as good as nickel plated surfaces, but the RSA6061 has the advantage that no additional production steps are needed and that no bi-metallic bending or delamination can occur in a thermally changing environment, e.g. when cooling to cryogenic temperature. Therefore, RSA6061 is a good material for optical applications in the visual spectrum.

Citation Download Citation

Guido P. H. Gubbels, Bart W. H. van Venrooy, Albert J. Bosch, and Roger Senden "Rapidly solidified aluminium for optical applications", Proc. SPIE 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, 70183A (23 July 2008); https://doi.org/10.1117/12.788766

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