Further study of metal transfer between sliding surfaces /
J. T. Burwell and C. D. Strang.

Description

Main Author

Burwell, J. T.

Related Names

Strang, C. D.
United States. National Advisory Committee for Aeronautics.

Language(s)

English

Published

Washington, D.C. : National Advisory Committee for Aeronautics, 1951.

Subjects

Radioactivity.
Metals.
Coatings.
Friction > Friction / Testing.
Sliding friction.

Summary

Continuation of research reported in NACA TN 1355 to determine what role, if any, is played by the transfer of metal from one rubbing surface to the other in the formation of characteristic surface coatings on certain piston-ring materials during run-in in an aircraft engine. The technique consists of making one of the two rubbing surfaces radioactive, carrying out the friction test, and then examining the other surface for signs of radioactivity. Materials examined were nitrided and unnitrided nitralloy steel and chromium-plated surfaces. Transfer to actual piston rings, both new and used, was investigated. Effects of transfer of load, speed, distance of travel, repeated travel over the same path, hardness of the moving surface, and type of chromium plate were studied.

Note

NACA TN No. 2271.
"January 1951."

Physical Description

39 p. : ill. ; 28 cm.

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