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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 19, Iss. 20 — Oct. 15, 1980
  • pp: 3562–3584

Relation between the optical and metallurgical properties of polished molybdenum mirrors

Jean M. Bennett, Shew M. Wong, and George Krauss  »View Author Affiliations


Applied Optics, Vol. 19, Issue 20, pp. 3562-3584 (1980)
http://dx.doi.org/10.1364/AO.19.003562


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Abstract

A study has been performed to determine the correlation among the microstructure, metallurgical processing, and optical surface finish of commercially available types of molybdenum (Mo) bar and plate and 0.5-mm thick Mo sheet. Specimens of bar and plate stock produced from low-carbon vacuum-arc-cast Mo or powder-metallurgy-processed Mo, as well as TZM (Ti-Zr-Mo) Mo alloy, were in the form of 3.86-cm diam disks. In addition, typical cross-rolled sheet specimens were produced from powder-metallurgy-processed Mo that had a very fine grain structure and a high degree of texture. Specimens were extensively characterized both optically and metallurgically. It was found that well-polished surfaces have surface topographies directly related to the microstructure and hence to the processing of the material. In sheet material having a well-developed texture, the polishability appeared to be independent of texture, and the grain size did not result in a lower scatter surface. It was concluded that the optimum type of Mo to use for smooth low-scatter mirrors is low-carbon vacuum-arc-cast plate or sheet material.

© 1980 Optical Society of America

History
Original Manuscript: June 23, 1980
Published: October 15, 1980

Citation
Jean M. Bennett, Shew M. Wong, and George Krauss, "Relation between the optical and metallurgical properties of polished molybdenum mirrors," Appl. Opt. 19, 3562-3584 (1980)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-19-20-3562


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References

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  9. The Plastmet and microcloth were obtained from Buehler Ltd., 2120 Greenwood St., Evanston, Ill. 60204.
  10. Manufactured by Lapping Polishing Co., Homer City, Pa. 15748.
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  13. Manufactured by American Chain and Cable Co., Inc., Wilson Instrument Division, 929 Connecticut Ave., Bridgeport, Conn. 06602.
  14. Manufactured by the Siemens Corp., 186 Wood Avenue South, Iselin, N.J. 08830.
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  22. Manufactured by Physical Electronics Industries, Inc., 6509 Flying Cloud Drive, Eden Prairie, Minn. 55343.
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  27. Molybdenum Metal (AMAX Specialty Metals Corp., 21801 Tungsten Road, Cleveland, Ohio 44117), pp. 55–56.

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