Progress in nanosilicate bonding of x-ray mirrors

Mark L. Schattenburg; Youwei Yao; Anjelica Molnar-Fenton; Ralf Heilmann; Alexander Bruccoleri

doi:10.1117/12.2630349

26 August 2022 Progress in nanosilicate bonding of x-ray mirrors

Mark L. Schattenburg, Youwei Yao, Anjelica Molnar-Fenton, Ralf Heilmann, Alexander Bruccoleri

Proceedings Volume 12181, Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray; 1218115 (2022) https://doi.org/10.1117/12.2630349
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

Epoxy has been the preferred agent for x-ray telescope alignment and bonding for many decades. While it may have worked great for thick, stiff Chandra mirrors, its efficacy for thin shell mirrors has proven to be inadequate. We report results of recent experiments with alignment and bonding of silicon x-ray mirrors using silicate bonding sol gel solutions loaded with nanometer-size silica balls—so-called nanosilicate bonds. Strong bonds are obtained even though surfaces were not particularly flat. In this presentation we will show the latest results of bond shear-strength measurements using an Instron industrial tester, and results of preliminary three-point bonds on test mirrors, which mimics the bonding procedure now being used by the Goddard x-ray mirror group. We will also show results of bond line shrinkage experiments and compare to epoxy.

Conference Presentation

Citation Download Citation

Mark L. Schattenburg, Youwei Yao, Anjelica Molnar-Fenton, Ralf Heilmann, and Alexander Bruccoleri "Progress in nanosilicate bonding of x-ray mirrors", Proc. SPIE 12181, Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray, 1218115 (26 August 2022); https://doi.org/10.1117/12.2630349

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