Ageing under mechanical stress: first experiments for a silver based multilayer mirror

Details Ageing under mechanical stress: first experiments for a silver based multilayer mirror Ageing under mechanical stress: first experiments for a silver based multilayer mirror

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.554..845l&link_type=abstract

In: Proceedings of the 5th International Conference on Space Optics (ICSO 2004), 30 March - 2 April 2004, Toulouse, France. Ed.:

Physics

Optics

Thin Films, Ageing, Reliability, Silver-Based Mirrors, Stress, Accelerated Life Test, Nanoindentation, Four-Point Bending

Scientific paper

Improving materials and devices reliability is a major concern to the spatial industry. Results are reported for satellite mirrors-like specimens consisting in oxide-protected metal systems. Optical coatings were deposited by electron beam evaporation. Mechanical stress fields in multi-layered materials play an important role. The stress state can have far-reaching implications both in kinetics and thermodynamics. Therefore an integrated apparatus with four-point bending equipment was designed. The technique allowed us to exert stress into a film or a system of films on a substrate concurrently with thermal treatment. In order to achieve the first tests performed with the help of the apparatus, various preliminary characterizations were required. The article reports the preliminary micro-mechanical testing of the materials (ultra micro-indentation to evaluate the elastic modulus of the samples materials and wafer curvature technique to determine the specimen residual stress) and the first ageing experiment. Experimental evidence of accelerated ageing under stress is successfully reported.

Affiliated with

Also associated with

No associations

Rating

Ageing under mechanical stress: first experiments for a silver based multilayer mirror does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Ageing under mechanical stress: first experiments for a silver based multilayer mirror, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ageing under mechanical stress: first experiments for a silver based multilayer mirror will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-893135