科研之友
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摘要
A kind of Cu base composite reinforced by 0.1 μm Al2O3 particles were prepared by hot pressing and sintering process for steel continuous casting mould. The microstructure and properties were studied. The results show that the Al2O3 particle distribution is uniform, and the particles refine the grain size. The tensile feature is a mixture of quasi-cleavage and dimple due to the moderate interface strength. As a result, the composite has better soft resistance and wear-resistance than those of Cu and alloy. With increase in super fine Al2O3, the density and electric conductivity of the composite decrease, but hardness and strength increase.
- 出版日期1999
