Tribological properties of copper alloy-based composites reinforced with tungsten carbide particles

Scalable Manufacturing of AgCu40(wt %)–WC Nanocomposite Microwires

“…Solidification processing, such as stir casting assisted by molten salt, was carried out to produce the AgCu 40 -WC nanocomposite efficiently. By taking advantages of good wettability between Cu and WC at high temperature [4,19] and a nanoparticle self-stabilization mechanism [5], this research demonstrated efficient incorporation and uniform self-dispersion of WC nanoparticles into AgCu 40 alloys. After that, thermal fiber drawing was utilized to fabricate microwires from the bulk nanocomposite as a scalable, efficient, and economical production method.…”

“…Metal matrix nanocomposites (MMNC) have been broadly investigated during the recent decade for their wide range of applications. The particle strengthening effect becomes remarkable when the particle size scales down to nanometers, because the interaction between nanoparticles and dislocation stands out [1], especially for thermally stable ceramic nanoparticles like silicon carbide [2,3], tungsten carbide [4], titanium carbide [5], titanium diboride [6], and aluminum oxide [7]. One of the primary issues for mass production of MMNCs is the poor wettability between metal matrix and ceramic nanoparticles, which could induce the nanoparticle agglomeration and consequently poor dispersion.…”

An investigation on the mechanochemical behavior of the Ca–C–Cu2O–WO3 quaternary system to synthesize the Cu–WC nanocomposite powder

“…Tungsten carbide meets the requirements of a good reinforcement material because of some outstanding properties such as high hardness, high-temperature strength, high melting point, good chemical stability, wear resistance, and electrical conductivity [5]. The use of tungsten carbide as a reinforcing phase for copper has been studied by several researchers [5][6][7][8][9].…”

“…The Cu-WC composite has been synthesized via powder metallurgy [8,10], and other conventional techniques, such as mechanical alloying [9], compocasting [11], and infiltration [6]. Moreover, an innovative infrared infiltration technique has been reported to prepare the copper matrix composites with WC [7].…”

Acoustic Emission in the Friction of Composite Materials

“…Studies on such friction units show that the use of CM reduces the friction coefficient and increases the wear resistance of friction contact surfaces (reducing intensity wear and increasing service life) (Takeshi et al 2009;Koutsomichalis et al 2009;Bria et al 2011). For the analysis and control of the CM-based friction units the traditional characteristics will be used (Bonny et al 2007;Hong et al 2011;Reddappa et al 2011): the coefficient of friction, friction torque, friction force, temperature at the friction contact area and other. However, in practice, these features are sensitive to the processes taking place at the stage of catastrophic wear of the surfaces of frictional contact.…”