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Tribological properties of Ti 3 SiC 2 and Al 2 O 3 ‐reinforced Ti 3 SiC 2 composites (10 and 20 vol% Al 2 O 3 ) were investigated by using an AISI‐52100 bearing steel ball dryly sliding on a linear reciprocating athletic specimen. The friction coefficients were found varying only in a range of 0.1 under the applied loads (2.5, 5, and 10 N), and the wear rates of the composites decreased with increasing Al 2 O 3 content. The enhanced wear resistance is mainly attributed to the hard Al 2 O 3 particles nail the surrounding soft matrix and decentrale the shear stresses under the sliding ball to reduce the wear losses.
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Hu et al. (2006) studied this question.
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