Rapidly solidified aluminium for optical applications
conference paper
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.
TNO Identifier
241128
ISSN
0277786X
ISBN
9780819472281
Article nr.
No.: 70183A
Source title
Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, 23-28 June 2008, Marseille, France