6 March 2001 C/SiC high-precision lightweight components for optomechanical applications
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Proceedings Volume 4198, Optomechanical Engineering 2000; (2001) https://doi.org/10.1117/12.417348
Event: Intelligent Systems and Smart Manufacturing, 2000, Boston, MA, United States
Abstract
We contend that carbon fiber reinforced silicon carbide material (C/SiC), developed by IABG, represents the state- of-the-art for ultra-lightweight, high precision optomechanical structures that must operate in adverse environments and over wide ranges of temperature. C/SiC employs conventional NC machining/milling equipment to rapidly fabricate near-net shape parts, providing substantial schedule, cost, and risk savings for high precision components. Unlike power based SiC ceramics, C/SiC does not experience significant shrinkage during processing, nor does it suffer from incomplete densification. By modifying certain process steps, the thermal and mechanical properties of C/SiC are tunable in certain ranges. This paper focuses on recent advances in C/SiC technology and application of this technology to high precision, lightweight applications such as meter-class optics and optical mounts. We also introduce a design for new, high precision mounts based upon standard optical grade C/SiC (formulation A-3) and a custom formulation of C/SiC (D-4) which was engineered for Schafer Corporation by IABG. The A- 3 and D-4 formulations have a near-perfect CTE match with silicon, making them the ideal material to athermally support ultra-lightweight silicon optics that will operate in a cryogenic environment.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Claus E. Mueller, Claus E. Mueller, Ulrich Papenburg, Ulrich Papenburg, William A. Goodman, William A. Goodman, Marc T. Jacoby, Marc T. Jacoby, } "C/SiC high-precision lightweight components for optomechanical applications", Proc. SPIE 4198, Optomechanical Engineering 2000, (6 March 2001); doi: 10.1117/12.417348; https://doi.org/10.1117/12.417348
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