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Title: LUBRICATION OF TITANIUM. Period covered March 15, 1957 to December 15, 1957

Abstract

This investigation sought to obtain some information about the frictional properties of modified titanium coatings and to make a comparison of the wear resistance of the best surface treatments in the presence of various lubricants using the Shell Four-Ball Wear Tester and the Falex Tester. It has been found that systems showing high wear rates in one tester will also show high wear rates in the other. If wear is expressed as volume or weight loss (W), it may generally be correlated vdth load (L) and time (t) by an expression of the form W = KLt for either tester. rhe constant K includes the characteristics of the machine, the nature of the specimens and the nature of the lubricant. It is concluded that the essential nature of the action taking place in either tester is identical and that therefore any lack of correlation must be attributed to operation in widely different pressure and temperature ranges. The correlation of wear rates with the frictional characteristics of the different systems was attempted in both testers with moderate success. The reproducibility of the results for various systems is too poor to permit differentiating between the different titanium base alloys used in anymore » particular treatment. As for the various surface treatments investigated, it appears that it is possible to obtain equivalent wear resistance in many cases using electroless nickel plates, cyanided, ritrided, carburized, oxidized, or carburized iron-plated titanium. Of these, oxidized and electroless nickel plated titanium fail at high loads. The use of conventional lubricants for any but electroless nickel and carburized iron- plated titanium is unreliable. Halogenated materials appear to be the best lubricants for the other treatments. It has been shown that the higher the halogen content of the lubricant, the better its lubricating properties. (auth)« less

Authors:
Publication Date:
Research Org.:
Clevite Research Center, Cleveland
OSTI Identifier:
4306803
Report Number(s):
WADC-TR-57-61(Pt.II)
NSA Number:
NSA-12-007265
DOE Contract Number:  
AF33(616)-3350
Resource Type:
Technical Report
Resource Relation:
Other Information: Project title: METALLIC MATERIALS. Task title: TITANIUM METAL AND ALLOYS. Orig. Receipt Date: 31-DEC-58
Country of Publication:
United States
Language:
English
Subject:
MINERALOGY, METALLURGY, AND CERAMICS; CYANIDES; EQUATIONS; FRICTION; HALOGENS; IRON ALLOYS; IRON CARBIDES; IRON NITRIDES; IRON OXIDES; LUBRICATION; NICKEL; NICKEL OXIDES; PLATES; PLATING; PRESSURE; QUANTITY RATIO; SURFACES; TEMPERATURE; TITANIUM; TITANIUM ALLOYS; WEAR

Citation Formats

Fatica, N. LUBRICATION OF TITANIUM. Period covered March 15, 1957 to December 15, 1957. United States: N. p., 1957. Web.
Fatica, N. LUBRICATION OF TITANIUM. Period covered March 15, 1957 to December 15, 1957. United States.
Fatica, N. Sun . "LUBRICATION OF TITANIUM. Period covered March 15, 1957 to December 15, 1957". United States. doi:.
@article{osti_4306803,
title = {LUBRICATION OF TITANIUM. Period covered March 15, 1957 to December 15, 1957},
author = {Fatica, N.},
abstractNote = {This investigation sought to obtain some information about the frictional properties of modified titanium coatings and to make a comparison of the wear resistance of the best surface treatments in the presence of various lubricants using the Shell Four-Ball Wear Tester and the Falex Tester. It has been found that systems showing high wear rates in one tester will also show high wear rates in the other. If wear is expressed as volume or weight loss (W), it may generally be correlated vdth load (L) and time (t) by an expression of the form W = KLt for either tester. rhe constant K includes the characteristics of the machine, the nature of the specimens and the nature of the lubricant. It is concluded that the essential nature of the action taking place in either tester is identical and that therefore any lack of correlation must be attributed to operation in widely different pressure and temperature ranges. The correlation of wear rates with the frictional characteristics of the different systems was attempted in both testers with moderate success. The reproducibility of the results for various systems is too poor to permit differentiating between the different titanium base alloys used in any particular treatment. As for the various surface treatments investigated, it appears that it is possible to obtain equivalent wear resistance in many cases using electroless nickel plates, cyanided, ritrided, carburized, oxidized, or carburized iron-plated titanium. Of these, oxidized and electroless nickel plated titanium fail at high loads. The use of conventional lubricants for any but electroless nickel and carburized iron- plated titanium is unreliable. Halogenated materials appear to be the best lubricants for the other treatments. It has been shown that the higher the halogen content of the lubricant, the better its lubricating properties. (auth)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Dec 15 00:00:00 EST 1957},
month = {Sun Dec 15 00:00:00 EST 1957}
}

Technical Report:
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