Mechanical alloying of FeAl intermetallic powder for metal injection moulding process

Abstract

The Fe–48 at.-%Al powder used for powder injection moulding (PIM) was prepared by mechanical alloying in a high energy planetary ball mill and subsequent vacuum annealing. The effects of stearic acid (SA) as the process control agent on powder characteristics were investigated using X-ray diffractometer, laser particle size analysis and scanning electron microscopy. The dependence of solvent debinding efficiency of PIM feedstock on the powder characteristics was also studied. The results indicate that a low SA content for ball milling helps to prepare near spherical, coarse powder particles that exhibit good solvent debinding efficiency. On the contrary, a high SA content leads to thin layered, small particles with poor PIM solvent debinding efficiency. An intermediate SA content such as 1 wt-% makes the ball milled powder combine the advantageous characteristics for PIM process.

Keywords

MECHANICAL ALLOYING FEAL INTERMETALLIC STEARIC ACID POWDER INJECTION MOULDING SOLVENT DEBINDING

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References

Chakraborty

S. P.

, Sharma

I. G.

and D. K: J. Alloys Compd, 1998, 280, 255–261.

Enayati

M. H.

and Salehi

: J. Mater. Set, 2005, 40, 3933–3938.

Krasnowski

, Grabias

and Kulik

: J. Alloys Compd, 2006, 424, 119–127.

Morris

D. G.

and Gunther

: Mater. Sci. Eng. A, 1996, A208, 7–19.

Chao

, Morris

D. G.

, Muiloz-Morris

M. A.

and Gonzalez-Carrasco

J. L.

: Intermetallics, 2001, 9, 299–308.

Morris-Munoz

M. A.

, Dodge

and Morris

D. G.

: Nanostruct. Mater., 1999, 11, 873–885.

Krasnowski

and Kulik

: Intermetallics, 2007, 15, 201–205.

Skoglund

, Wedel

M. K.

, and Karlsson

: Intermetallics, 2004, 12, 977–983.

Aparecidpo

C. G.

: Mater. Process. Technol, 2001, 118, 193–198.

10.

Gulsoy

, Vayvay

and Salman

: Proc. Int. Conf. on ‘Recent advances in space technologies’, Istanbul, Turkey, November 2003, IEEE, 575-578.

11.

Kato

and Masui

: J. Jpn. Soc. Powder Powder Metall., 2002, 34, 787–792.

12.

Kato

, Matsumoto

, Ando

and Ieki

: J. Jpn Soc. Powder Powder Metall, 1997, 44, 88–293.

13.

Kato

and Masui

: J. Jpn. Soc. Powder Powder Metall, 2000, 47, 614–618.

14.

Varin

R. A.

, Bystrzycki

and Calka

: Intermetallics, 1999, 7, 917–930.

15.

Wolski

, Le Caer

, Delcroix

, Fillit

, Thevenot

and Le Coze

: Mater. Sci. Eng. A, 1996, A207, 97–104.

16.

Eelman

D. A.

, Dahn

J. R.

, MacKay

G. R.

and Dunlap

R. A.

: J. Alloys Compd, 1998, 266, 234–240.

17.

German

R. M.

and Bose

: ‘Injection molding of metals and ceramics’; 1997, Princeton, NJ, Metal Powder Industries Federation.

18.

, Liang

, Li

, Zhang

and Huang

: Powder Metall. Technol., 2003, 21, 76–79.

19.

Yang

, Yang

and Wang

: Ceram. Int., 2003, 29, 745–756.

20.

Shaw

, Zawrah

and Villegas

: Metall. Mater. Trans. A, 2003, 34A, 159–170.

21.

Song

, Wu

and Tang

: J. Mater. Eng., 2007, 10, 60–64.

22.

Enzo

, Frattini

and Gupta

: Acta Metall, 1996, 44, 3105–3113.

23.

Huang

, Ishihara

K. N.

and Shingu

P. H.

: Mater. Sci. Eng. A, 1997, A231, 72–79.

24.

Shi

, Guo

and Ouyang

: J. Alloys Compd, 2008, 455, 207–209.

25.

Thou

, Ouyang

and Qin

: J. Guangxi Univ., 2004, 29, 101–104.

26.

Zeng

and Baker

: Intermetallics, 2006, 14, 396–405.

27.

Fan

, Huang

and Wang

: Powder Metall Ind, 2002, 12, 7–12.

28.

Skoglund

, Wedel

M. K.

and Karisson

: Intermetallics, 2003, 11, 475–482.

29.

Tang

, Wu

and Wang

: J. Tsinghua Univ., 2006, 46, 1365–1368.

30.

Lin

, Qu

and Fan

: Cemented Carbide, 2001, 18, 99–104.

31.

Fan

, Huang

, Li

and Qu

: Powder Metall. Technol., 1998, 16, 217–222.

32.

Hartwig

, Veltl

, Petzoldt

, Kunze

, Scholl

and Kieback

: J. Eur. Ceram. Soc., 1998, 18, 1211–1216.