This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Wear Properties of In-Situ Reacted Al-AlN Composite Sintered Material and Application for Automatic Transmission Parts
Technical Paper
1999-01-1048
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
In-situ formed Al-AlN sintered composite materials have been developed by the direct nitriding process based on the reaction of the aluminum matrix to nitrogen gas during sintering. A traditional press-sinter(P/S) method, hot extrusion(H/E) and powder forging (P/F) processes are available to consolidate the composite aluminum alloys. Fine AlN particles less than 1 μm in diameter dispersed as hard particles in the material have a significantly strong bonding to the matrix. They have an important role to improve wear resistance equivalent to the hard anodizing or Ni-P plating. The aluminum alloy also shows a low friction coefficient (less than 0.01) under oil lubricating conditions because fine AlN particles make it possible to form oil film at the interface between the counterpart material. The Al-AlN composite material shows an outstanding performance in the application to the automotive components, in particular Automatic Transmission (AT) parts such as valve spools and oil-pump rotors. The material without surface treatments has a high potential to be used in various applications in automotive where good wear resistance and a low friction coefficient are required under oil lubricating conditions.
Recommended Content
Authors
Topic
Citation
Kondoh, K., Takeda, Y., and Kimura, A., "Wear Properties of In-Situ Reacted Al-AlN Composite Sintered Material and Application for Automatic Transmission Parts," SAE Technical Paper 1999-01-1048, 1999, https://doi.org/10.4271/1999-01-1048.Also In
References
- Kondoh K. Takeda Y. “Lubrication oil pump made of rapidly solidified aluminum alloy for high performance engine” SAE technical report, 960281 1996
- Kondoh K. Hayashi T. Takeda Y. “Al-Fe-X alloy consolidated by powder forging without lateral flow” Proceeding of powder metallurgy world congress 1992 2 339 353 1992
- Kusui J. et al Proceeding of Japan Institute of Light Metals 179 180 1996
- Kimura A. Shibata M. Kondoh K. Takeda Y. “Reduction mechanism of surface oxide in aluminum alloy powders containing magnesium studied by x-ray photoelectron spectroscopy using synchrotron radiation” Applied Physics Letter 70 3615 3617 1997