Study on Manufacture of 2:17 Sm-Co Magnets by Powder Injection Molding

Abstract:

Article Preview

Manufacture of 2:17 Sm-Co magnets by powder injection molding was investigated. The binder of thermoplastic polymer was selected as the wax-based system including paraffin wax, stearic acid and high density polyethylene. Before mixing with paraffin wax and high density polyethylene, the powder of 5-8 µm was coated by stearic acid. The molding compacts were obtained under 200°C without deficits. Solvent debinding and thermal debinding were combined to remove the binder. The basic magnetic characteristics of the specimen were of the same level as those by powder metallurgy technique, which indicated that to fabricate 2:17 Sm-Co magnets by powder injection molding was feasible.

Info:

Periodical:

Materials Science Forum (Volumes 475-479)

Main Theme:

Edited by:

Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie

Pages:

2143-2146

Citation:

H. Q. Yin et al., "Study on Manufacture of 2:17 Sm-Co Magnets by Powder Injection Molding", Materials Science Forum, Vols. 475-479, pp. 2143-2146, 2005

Online since:

January 2005

Export:

Price:

$38.00

[1] R.M. German, Powder Injection Molding, Metal Powder Industries Federation, Princeton, New Jersey, (1990).

[2] Rom Billiet and Hanh Nguyen, Metal Powder Report, vol 58, Issue: 9, Sept. 2003, pp.22-27.

[3] R. Supati, N.H. Loh, K.A. Khor and S.B. Tor, Materials Letters 46 (2000), pp.109-114.

[4] Austen Marten, Metal Powder Report, vol 57, Issue: 3, March. 2002, pp.14-19.

[5] Zhou Shouzeng, Rare-Earth Hard Magnets and the Applications, Metallurgy Industry Press, (1995).