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