The effect of crystal orientation on the cryogenic strength of hydroxide catalysis bonded sapphire

Haughian, K., Douglas, R., van Veggel, A.A. , Hough, J. , Khalaidovski, A., Rowan, S., Suzuki, T. and Yamamoto, K. (2015) The effect of crystal orientation on the cryogenic strength of hydroxide catalysis bonded sapphire. Classical and Quantum Gravity, 32(7), 075013. (doi:10.1088/0264-9381/32/7/075013)

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Abstract

Hydroxide catalysis bonding has been used in gravitational wave detectors to precisely and securely join components of quasi-monolithic silica suspensions. Plans to operate future detectors at cryogenic temperatures has created the need for a change in the test mass and suspension material. Mono-crystalline sapphire is one candidate material for use at cryogenic temperatures and is being investigated for use in the KAGRA detector. The crystalline structure of sapphire may influence the properties of the hydroxide catalysis bond formed. Here, results are presented of studies of the potential influence of the crystal orientation of sapphire on the shear strength of the hydroxide catalysis bonds formed between sapphire samples. The strength was tested at approximately 8 K; this is the first measurement of the strength of such bonds between sapphire at such reduced temperatures. Our results suggest that all orientation combinations investigated produce bonds of sufficient strength for use in typical mirror suspension designs, with average strengths >23 MPa.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:van Veggel, Dr Marielle and Douglas, Miss Rebecca and Rowan, Professor Sheila and Hough, Professor James and Haughian, Dr Karen
Authors: Haughian, K., Douglas, R., van Veggel, A.A., Hough, J., Khalaidovski, A., Rowan, S., Suzuki, T., and Yamamoto, K.
Subjects:Q Science > QB Astronomy
Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Research Group:Institute for Gravitational Research
Journal Name:Classical and Quantum Gravity
Journal Abbr.:CQG
Publisher:Institute of Physics
ISSN:0264-9381
ISSN (Online):1361-6382
Copyright Holders:Copyright © 2015 IOP Publishing Ltd
First Published:First published in Classical and Quantum Gravity 32(7):075013
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
459312Investigations in Gravitational Radiation.Sheila RowanScience & Technologies Facilities Council (STFC)ST/I001085/1P&A - PHYSICS & ASTRONOMY
459313Investigations in Gravitational Radiation.Sheila RowanScience & Technologies Facilities Council (STFC)ST/J000361/1P&A - PHYSICS & ASTRONOMY
624341Investigations in Gravitational Radiation / Particle Astrophysics Capital equipmentSheila RowanScience & Technologies Facilities Council (STFC)ST/L000946/1S&E P&A - PHYSICS & ASTRONOMY
599861Underexplored properties of hydroxide catalysis bondsAnna-Maria Van VeggelRoyal Society (ROYSOC)DH120021S&E P&A - PHYSICS & ASTRONOMY
621211Delivering hydroxide catalysis bonding with impactAnna-Maria Van VeggelRoyal Society (ROYSOC)RG120367S&E P&A - PHYSICS & ASTRONOMY