Chemical Vapor Deposition of Multispectral Domes

Abstract

The program demonstrated the capability of fabricating chemical vapor deposited zinc sulfide windows and hemispherical domes. A zinc sulfide plate, 10 X 10 X 5/8 in., and a 9-inch hemispherical dome were fabricated and optically polished to specification. As a result of this work the optical and structural properties of zinc sulfide were significantly improved. For example, a 60 percent increase in strength was realized. It was also demonstrated that it is possible using the CVD process to deposit multiple domes per run. With further development a significant cost savings for this type of hardware should be realized. Significant progress was also made in the development of zinc sulfo-selenide solid solutions. Improvements were realized in the optical and structural properties of these deposits. At the conclusion of the program a clearer understanding of the cause of scatter in these materials and zinc sulfide had been attained that resulted in improved materials.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1975
Accession Number
ADA014362

Entities

People

  • B. A. Dibenedetto
  • J. Pappis

Organizations

  • RTX

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Chemical Reactions
  • Chemical Vapor Deposition
  • Coatings
  • Compound Semiconductors
  • Control
  • Control Systems
  • Crystal Structure
  • Diffraction
  • Geometric Forms
  • Geometry
  • Materials
  • Materials Laboratories
  • Mixing
  • Optical Materials
  • Refraction
  • Refractive Index
  • Scattering

Fields of Study

  • Materials science

Readers

  • Life Cycle Cost Analysis
  • Spectroscopy.
  • Surface Engineering/Surface Coating Technology.