Low Cost Very Large Diamond Turned Metal Mirror

Abstract

Lightweight, stiff mirrors can be produced by electroplating a nickel phosphide alloy over a plastic foam mandrel. 300 and 600 mm diameter flat mirrors were made using this process. Integral nickel phosphide tubes were separately formed and inserted into the mandrels before plating. The assembly was then plated and the mandrel was removed by solvent extraction. The mirror substrates were diamond turned and polished. Optical inspection is not yet complete.

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Document Details

Document Type
Technical Report
Publication Date
Jun 08, 2010
Accession Number
ADA536562

Entities

People

  • John M. Casstevens

Tags

DTIC Thesaurus Topics

  • Alloys
  • Assembly
  • Coatings
  • Deposition (Materials Processing)
  • Diameters
  • Electrolytic Processes
  • Electroplating
  • Extraction
  • Fabrication
  • Inspection
  • Lightweight
  • Materials
  • Materials Processing
  • Metals
  • Plating
  • Solvent Extraction
  • Substrates

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Optical Fiber Sensing and Electromagnetic Propagation.
  • Thin Film Deposition Science.