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Proceedings Paper

Boron phosphide IR coatings
Author(s): Brian C. Monachan; A. D. Morrison; Ewan M. Waddell; Desmond R. Gibson; Sandy A. D. Wilson; Keith L. Lewis
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Paper Abstract

Boron phosphide (BP) has outstanding mechanical, optical and thermal properties. It has been prepared as a single crystal and as a coating by various techniques. BP coatings have been shown to combine good broad-band transmission with exceptional durability and erosion protection of all common infrared optical materials. Their protective properties on various substrates have been assessed in detail in whirling arm rain erosion tests and by water jet impact measurements, and the thickness dependences determined. Comparisons have been drawn between BP and other durable coatings. The productionising of BP coating processes is well advanced after overcoming a number of problems, in particular the exceptional hazards presented by the feedstocks.

Paper Details

Date Published: 1 January 1992
PDF: 33 pages
Proc. SPIE 10261, Infrared Thin Films: A Critical Review, 1026107 (1 January 1992); doi: 10.1117/12.58691
Show Author Affiliations
Brian C. Monachan, Pilkington Optronics (United Kingdom)
A. D. Morrison, Pilkington Optronics (United Kingdom)
Ewan M. Waddell, Pilkington Optronics (United Kingdom)
Desmond R. Gibson, Pilkington Optronics (United Kingdom)
Sandy A. D. Wilson, Pilkington Optronics (United Kingdom)
Keith L. Lewis, Defence Research Agency (United Kingdom)


Published in SPIE Proceedings Vol. 10261:
Infrared Thin Films: A Critical Review
Ric P. Shimshock, Editor(s)

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