Ultra-Hard Coatings For I.R. Materials

B. C. Monachan; C. J. Kelly; E. M. Waddell

doi:10.1117/12.960772

11 September 1989 Ultra-Hard Coatings For I.R. Materials

B. C. Monachan, C. J. Kelly, E. M. Waddell

Proceedings Volume 1112, Window and Dome Technologies and Materials; (1989) https://doi.org/10.1117/12.960772
Event: SPIE 1989 Technical Symposium on Aerospace Sensing, 1989, Orlando, FL, United States

Abstract

Ultra-hard multilayer anti-reflection coatings possessing a wide optical band-width have been developed for the common IR transmitting substrate materials. Coatings have been produced using RF plasma assisted chemical vapour deposition from a variety of feedstocks. All the coatings possess excellent abrasion resistance - on a par with that of diamond-like carbon, when assessed in a wiper test using a sand/water slurry. The coatings all exhibit excellent resistance to the effects of rain erosion. The best of these coatings on zinc sulphide substrates for 8-12μm, when tested in the whirling arm erosion rig at RAE, Farnborough, exhibited a higher level of protection than any other coating or substrate material ever tested there.

Citation Download Citation

B. C. Monachan, C. J. Kelly, and E. M. Waddell "Ultra-Hard Coatings For I.R. Materials", Proc. SPIE 1112, Window and Dome Technologies and Materials, (11 September 1989); https://doi.org/10.1117/12.960772

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