Hydroxide catalysis bonding of silicon carbide

van Veggel, A.A. , van den Ende, D., Bogenstahl, J., Rowan, S., Cunningham, W., Gubbels, G. and Nijmeijer, H. (2008) Hydroxide catalysis bonding of silicon carbide. Journal of the European Ceramic Society, 28(1), pp. 303-310. (doi:10.1016/j.jeurceramsoc.2007.06.002)

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Abstract

For bonding silicon carbide optics, which require extreme stability, hydroxide catalysis bonding is considered [Rowan, S., Hough, J. and Elliffe, E., Silicon carbide bonding. UK Patent 040 7953.9, 2004. Please contact Mr. D. Whiteford for further information: D.Whiteford@admin.gla.ac.uk]. This technique is already used for bonding silicate-based materials, like fused silica and Zerodur. In application with silicon carbide, the technique is highly experimental and the aim is to test the strength of the bond with silicon carbide. The silicon carbide is polished to λ/10 PV flatness and then oxidized at 1100 °C in a wet environment prior to bonding to form a necessary layer of SiO2 on the surface. The bonding is performed in clean room conditions. After bonding the pieces are sawed into bars to determine the strength in a four-point bending experiment. The oxidization process shows many different color changes indicating thickness variations and contamination of the oxidization process. The bonding has been performed with success. However, these bonds are not resistant against aqueous cooling fluids, which are used during sawing. Several bars have survived the sawing and a maximum strength of 30 N mm−2 has been measured.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Rowan, Professor Sheila and van Veggel, Dr Marielle and Cunningham, Dr Liam
Authors: van Veggel, A.A., van den Ende, D., Bogenstahl, J., Rowan, S., Cunningham, W., Gubbels, G., and Nijmeijer, H.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of the European Ceramic Society
ISSN:0955-2219

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
337921UK involvement in advanced LIGOKenneth StrainParticle Physics & Astronomy Research Council (PPARC)ST/G504284/1Physics and Astronomy
451221Development of key adaptive mirror technologies for the European Extremely Large Telescope (ELT)Calum TorrieScience & Technologies Facilities Council (STFC)ST/F003455/1Physics and Astronomy
459312Investigations in Gravitational Radiation.Sheila RowanScience & Technologies Facilities Council (STFC)ST/I001085/1Physics and Astronomy