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Protection of Mg Alloys for Structural Applications in Automobiles
Technical Paper
2004-01-0133
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Magnesium alloys, with the highest strength-to-weight ratio of the common engineering alloys, have been used in castings of various automotive components. The forecast trend for the use of the metal in automobiles suggests a more rapid growth pace in the coming decade.
However, Mg alloys happen to be among the most reactive materials in natural environments, such as those applicable to the exterior automotive conditions. The most challenging form of corrosion is galvanic corrosion: the corrosion of Mg parts when in contact with other materials such as coated steel bolts and nuts. In the joining areas, crevice corrosion can also be a concern. Effective coatings are essential for such applications.
In the research work that is undertaken at the Materials Technology Laboratory of Natural Resources Canada in partnership with a major USAMP (US DOE) program, an effort was made to select environmentally friendly coatings for Mg alloys and to evaluate new coatings for steel fasteners and new alloys for use as washers and spacers. The results of laboratory tests are presented in this paper. Effort was also made to develop a new washer material that can minimize the galvanic corrosion between the Mg alloy and the fasteners; preliminary test result of this material is also provided.
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Authors
- Wenyue Zheng - CANMET Materials Technology Laboratory, Natural Resources Canada
- C. Derushie - CANMET Materials Technology Laboratory, Natural Resources Canada
- R. Zhang - CANMET Materials Technology Laboratory, Natural Resources Canada
- J. Lo - CANMET Materials Technology Laboratory, Natural Resources Canada
Topic
Citation
Zheng, W., Derushie, C., Zhang, R., and Lo, J., "Protection of Mg Alloys for Structural Applications in Automobiles," SAE Technical Paper 2004-01-0133, 2004, https://doi.org/10.4271/2004-01-0133.Also In
References
- Powell Bob R. “The USAMP Magnesium Powertrain Cast Components Project,” Proceedings of the 60th Annual World Magnesium Conference May 11-12 2003 44 51
- Balzer J. et al. “Structural Magnesium Front End Support Assembly” SAE Technical Paper No. 2003-01-0186 SAE Warrendale, PA, USA DATE?
- Hillis J.E. Murray R.W. 14th International Die Casting Congress and Exposition Toronto, Canada Paper No. G-T87-003 1987
- Skar J.I. “Corrosion and Corrosion Prevention of Magnesium Alloys” Materials and Corrosion 50 1999 2 6 Wang G. Stwart K. Berkmortel R. Skar J.I. Corrosion Prevention for External Magnesium Automotive Components SAE Technical paper No. 2001-01-0421 SAE Warrendale, PA, USA DATE?
- Osborne R. Cole G. Cox B. Penrod P. “USCAR Project on Magnesium Structural Castings” Proc. IMA 2000 Magnesium Conference Vancouver, Canada 21 23 May 2000 1 5
- Gray J.E. Luan B. “Protective coatings on magnesium and its alloys - a critial review” Journal of Alloys and Compounds 336 2002 88 113
- Bakke P. Sannes S. Albright D. “Effects of Ni, Cu, Si and Co on the Corrosion Properties of Permanent Mould Cast Medallions and Die Cast Plates of Magnesium Alloy AZ91” SAE Technical Paper No. 1999-01-0926 SAE Warrendale, PA, USA DATE?
- Davis D. Industrial Paint & Powder 74 6 June 1998 34 36 Kurze P. Singe T. Diesing J. “Corrosion protection of magnesium materials 54 9 22 24 Sept. 2000
- Korner T. Seidel R. Juptner U. “New possibilities for magnesium: Chrome-free surface treatments for magnesium” Metalloberflache Germany 55 1 20 Jan. 2001
- Johnston J.A. Smith S. Proc. Alliance for the Polyurethanes Industry (API) Conference Salt Lake City, Utah October 13 16 2002
- “Material Specification Finish (Coating)” General Motors Corp. 2001
- Reinhold B. Lehkuhl H. Mehler K. Aluminum-magnesium alloy coatings Metalloberflache 55 4 Apr. 2001 24 28
- Chen W.-B. Chen P. Chen H.Y. Wu J. Tsai W.-T. “Development of Al-containing zinc-rich paints for corrosion resistance” Applied surface science 187 1-2 Feb 2002 154 174
- Reinhold B. Mehler K. Lehkuhl H. “Aluminum organic electrolytes and method for electrolytic coating with aluminum and aluminum-magnesium alloys”
- Thomala W. Germany 26 1 Jan. 1995 32 50
- Gao G. Cole G. Ricketts M. Balzer J. Frantzeskakis P. “Effects of fastener surface on galvanic corrosion of automotive magnesium components” Second International Conference on Magnesium Science & Technology Dead Sea, Israel Feb. 22 24 2000 Proceedings of the Second Israeli International Conference on Magnesium Science & Technology 321 338
- Hawke D. Ruden T. “Galvanic compatibility of coated steel fasteners with magnesium” Hydro Magnesium Society of Automotive Engineers 400 Commonwealth Dr., Warrendale, PA 15096, USA 1995 Journal of Materials & Manufacturing 104 1995 358 362