Effect of surface preparation on oxidation of WI-52 at 1800° and 2000° F (1255 and 1366 K) /
by Carl E. Lowell and Isadore L. Drell.

Description

Main Author

Lowell, Carl E.

Related Names

Drell, Isadore L.
United States. National Aeronautics and Space Administration.
Lewis Research Center.

Language(s)

English

Published

Washington, D.C. : National Aeronautics and Space Administration, 1971.

Subjects

Oxidation.
Heat resistant alloys > Heat resistant alloys / Research.

Summary

"High-temperature X-ray diffraction, high-temperature microscopy, and weight-gain experiments were combined to investigate the effect of surface preparation on the static-air oxidation of WI-52, a cobalt-base superalloy. Surface preparation was found to affect the order, relative amounts, and morphology of the oxides formed. Oxidation at 1800° F (1255 K) for 100 hours caused weight gains in gbound-and-lapped specimens that were four times that of metallographically polished specimens. Upon cooling, only the ground-and-lapped specimens spalled. Models of oxidation were developed to describe the surface-preparation effects."--P. [i].

Note

"E-5668."
"NASA TN D-6148."
"February 1971."
Also available online in PDF from NASA Technical Reports Server Web site.

Physical Description

[i], 31 p. : ill. ; 26 cm.

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