Effects of aluminium on sintered properties of Cu-10wt%Sn bearing

Authors

  • Viriyah Chobaomsup Faculty of Engineering, Chulalongkorn University
  • Tachai Luangvaranunt Faculty of Engineering, Chulalongkorn University

Keywords:

Self-lubricating Bearing, Cu-10wt%Sn, Powder metallurgy

Abstract

Self-lubricating bearings are one of the oldest industrial applications of porous powder metallurgy parts, dating back to the mid-1920s. They remain the highest part produced by the P/M industry. The objective of this research was to study the effects of sintering time, sintering temperature and ratio of adding aluminium on sintered properties of Cu-10wt%Sn bearing that was produced from powder metallurgy processing. Various physical and mechanical properties such as density, percentage of porosity and hardness were tested to elucidate the effect of processing parameters. Phase identification and microstructure were analyzed by X-Ray Diffractometer and optical microscope, respectively. Sintering times in the experiment were 5, 30, 45, 60 and 90 minutes; sintering temperatures were 830°C and 900°C and ratios of adding aluminium were 0wt%Al (no adding), 5wt%Al and 10wt%Al. It was found that the larger the addition of aluminium, the greater was the reduction in density and hardness under all sintering conditions. However, additional heat treatment after sintering, by isothermal annealing at 750ºC for 1 hour and quenching in water, increased the hardness of all specimens. The best processing condition to obtain a high hardness was sintering at 900ºC for 30 to 60 minutes followed by isothermal annealing at 750ºC and quenching in water.

Downloads

Download data is not yet available.

References

ASM Powder Metallurgy Committee. (1993). ASM Handbook Volume 7 Powder Metallurgy. (5th ed.) Ohio,OH : ASM International. pp. 704-709.

Lide, D.R. (Ed.). (2003). CRC Handbook of Chemistry and Physics (84th ed.); Section 4, Properties of the Elements and Inorganic Compounds; Vapor Pressure of the Metallic Elements. Boca Raton, Florida : CRC Press.

Villars, P., Prince, A. & Okamoto, H. (1980). Handbook of Ternary Alloy Phases Diagrams. pp. 3353-3361.

Downloads

Published

2017-04-15

How to Cite

[1]
V. Chobaomsup and T. . Luangvaranunt, “Effects of aluminium on sintered properties of Cu-10wt%Sn bearing”, J Met Mater Miner, vol. 20, no. 2, Apr. 2017.

Issue

Vol. 20 No. 2 (2010)

Section

Original Research Articles

License

Copyright (c) 2017 Journal of Metals, Materials and Minerals

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Authors who publish in this journal agree to the following terms:

    1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.

 

    1. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.