Abstract
The bulk Zr48Cu47.5Al4Co0.5 amorphous alloy composites were successfully consolidated by spark plasma sintering under different sintering temperatures. Their mechanical, wetting and corrosion properties were investigated. The results show that the density and hardness increase firstly with increase in the sintering temperature, and then decrease when the sintering temperature exceeds 713K. The Cu10Zr7 and CuZr2 phases continuously grow up with increasing sintering temperature. The growth rate of the volume fraction is ∼3.5 times larger for the Cu10Zr7 than for the CuZr2 under present sintering conditions. The water contact angle decreases with increasing sintering temperature. In addition, the corrosion potential of the 713K-sintered sample is the highest. The corrosion current density of the 673K-sintered sample is 2∼3 times larger than that of the other samples under higher sintering temperatures. The growth mechanism for Cu10Zr7 and CuZr2 phases and the corrosion mechanism are also discussed.
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