Solid State Science and Technology, Vol. 17, No 1 (2009) 31-36

ISSN 0128-7389

 

ANALYSIS ON THE HARDNESS CHARACTERISTICS OF SEMI-METALLIC FRICTION MATERIALS

R.J. Talib1, M.A.B2. Azimah2, J. Yuslina2, S.M. Arif2 and K.Ramlan3

1AMREC, SIRIM Bhd, Lot 34, Jalan Hi Tech 2/3, Kulim Hi Tech Park

09000 Kulim, Kedah, Malaysia

2Pusat Pengajian Kejuruteraan Bahan, Universiti Malaysia Perlis

P.O. Box 77, Kangar, Malaysia

3Faculty of Mechanical Engineering, University Technology MARA,

40150 Shah Alam, Selangor, Malaysia.

 

ABSTRACT

In this work, seven samples of newly developed friction material formulations were subjected to Rockwell hardness tests in accordance with Malaysia standard MS 474, Part 2. 2003. The samples were developed through powder metallurgy technique consisting of the following processing stages; powder selection, weighing, compaction, post baking and finishing. The Rockwell hardness of the samples was measured before and after the swell and growth tests. The indention spots after the hardness tests were also observed using scanning electron microscope (SEM) and the elemental compositions on that area were analyzed using Energy Dispersive X-ray (EDX). This paper will discuss the hardness characteristics of the friction materials with regard to the microstructure and elemental composition.

 

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REFERENCES

[1] Yang, S. & Gibson, R.F. (1997). Int. J. of materials and product technology 12 (4-6), 496.

[2] M.Mustapha, M.I.Ishak, Y.M.Junus, M.A.Selamat, M.S. Selamat and B.Meh. (2004) Proceedings of 2nd Malaysian Brake Friction Materials, Colloquiums.

[3] Mokhtar, M.O.A. (1982) Wear 78, 297- 305.

[4] Filip, P., Kovarik, L, & Wright, M, A. The 8th international pacific conference on automobile engineering. 4 9th Nov. 1995. Yokohama, Japan. 407 412

[5] Talib, R.J., Kasiran, R and Azhari, C.H. (2002) Journal Solid State Science & Technology, 10 (1,2) 292-298.

[6] Hoyer, L. G., Bach, A., Nielsen, G., T. Morgen P. (1999) Wear, 232, pp. 168-175

[7] Nicholson, G. 1995. 100 years of brake linings and clutch facings, P & W Price Enterprise

[8] MS 474: PART 2: 2003. Methods of Test for Automotive Friction materials (Brake Linings, Disc Pads and Bonded Shoe): Part 2: Rockwell Hardness Test (First Revision)

[9] SAE 160 JUN 80. Growth, and dimensional stability of brake linings