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Title: Ion-beam mixing of Fe/B layers for tribological applications

Abstract

Ion-beam mixing of iron and boron deposited layers was investigated as a technique to produce improved tribological coatings on steel substrates. Analysis of the kinetics of the ion-mixing process indicated that processing temperatures between 300 and 450{degree}C were required to achieve mixing of iron and boron multilayered coatings. During film deposition, it is critical to avoid deposition processes such as rf sputtering that trap large quantities of inert gases in the growing films and form blisters during subsequent ion mixing at elevated temperatures. Tribological evaluation of annealed and ion-mixed coatings indicated that the major effect of the ion mixing is formation of hard, wear-resistant, polycrystalline Fe{sub 2}B and Fe{sub 3}B phases at 450{degree}C and amorphous layers at 300{degree}C. Under partially lubricated conditions, the hard phases increase the duration of a low-friction (coefficient of friction <0.2) regime by reducing wear, thereby maintaining a low surface roughness. Under boundary-lubrication conditions, reduced wear was observed in tests on ion-mixed samples and was found to be dependent on the humidity in the test environment. 16 refs., 9 figs., 3 tabs.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab., IL (USA)
Sponsoring Org.:
DOE/CE
OSTI Identifier:
6952307
Report Number(s):
CONF-901071-1
ON: DE90010091
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: Joint STLE-ASME tribology conference, Toronto (Canada), 7-10 Oct 1990
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BORON; MIXING; ION BEAMS; DEPOSITION; IRON; STEELS; COATINGS; TRIBOLOGY; AMORPHOUS STATE; ANNEALING; BLISTERS; BORIC ACID; BOUNDARY CONDITIONS; DEFORMATION; DIFFUSION; FILMS; FRICTION; HUMIDITY; IMAGE PROCESSING; LAYERS; LUBRICANTS; MEASURING METHODS; OPTIMIZATION; OXIDATION; PERFORMANCE TESTING; POLYCRYSTALS; RF SYSTEMS; SAMPLING; SPUTTERING; STAINLESS STEELS; SUBSTRATES; SURFACE PROPERTIES; TEMPERATURE EFFECTS; WEAR; ALLOYS; BEAMS; CHEMICAL REACTIONS; CRYSTALS; ELEMENTS; HEAT TREATMENTS; HIGH ALLOY STEELS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; IRON ALLOYS; IRON BASE ALLOYS; METALS; PROCESSING; SEMIMETALS; TESTING; TRANSITION ELEMENTS; 360101* - Metals & Alloys- Preparation & Fabrication; 360102 - Metals & Alloys- Structure & Phase Studies; 360103 - Metals & Alloys- Mechanical Properties; 360105 - Metals & Alloys- Corrosion & Erosion; 320303 - Energy Conservation, Consumption, & Utilization- Industrial & Agricultural Processes- Equipment & Processes; 656003 - Condensed Matter Physics- Interactions between Beams & Condensed Matter- (1987-)

Citation Formats

Fenske, G R, Hu, R, Baldo, P M, Erck, R A, Erdemir, A, Lee, R H, Busch, D E, Nichols, F A, and Rehn, L E. Ion-beam mixing of Fe/B layers for tribological applications. United States: N. p., 1990. Web.
Fenske, G R, Hu, R, Baldo, P M, Erck, R A, Erdemir, A, Lee, R H, Busch, D E, Nichols, F A, & Rehn, L E. Ion-beam mixing of Fe/B layers for tribological applications. United States.
Fenske, G R, Hu, R, Baldo, P M, Erck, R A, Erdemir, A, Lee, R H, Busch, D E, Nichols, F A, and Rehn, L E. Mon . "Ion-beam mixing of Fe/B layers for tribological applications". United States.
@article{osti_6952307,
title = {Ion-beam mixing of Fe/B layers for tribological applications},
author = {Fenske, G R and Hu, R and Baldo, P M and Erck, R A and Erdemir, A and Lee, R H and Busch, D E and Nichols, F A and Rehn, L E},
abstractNote = {Ion-beam mixing of iron and boron deposited layers was investigated as a technique to produce improved tribological coatings on steel substrates. Analysis of the kinetics of the ion-mixing process indicated that processing temperatures between 300 and 450{degree}C were required to achieve mixing of iron and boron multilayered coatings. During film deposition, it is critical to avoid deposition processes such as rf sputtering that trap large quantities of inert gases in the growing films and form blisters during subsequent ion mixing at elevated temperatures. Tribological evaluation of annealed and ion-mixed coatings indicated that the major effect of the ion mixing is formation of hard, wear-resistant, polycrystalline Fe{sub 2}B and Fe{sub 3}B phases at 450{degree}C and amorphous layers at 300{degree}C. Under partially lubricated conditions, the hard phases increase the duration of a low-friction (coefficient of friction <0.2) regime by reducing wear, thereby maintaining a low surface roughness. Under boundary-lubrication conditions, reduced wear was observed in tests on ion-mixed samples and was found to be dependent on the humidity in the test environment. 16 refs., 9 figs., 3 tabs.},
doi = {},
url = {https://www.osti.gov/biblio/6952307}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}

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