Abstract:The microstructure and properties of boron-modified copper-base alloys were investi-gated by tension，corrosion，corrosive wear and erosion tests. The results show that by adding boron in  copper-base alloys .the strength and hardness of alloys increase，the plasticity decreases somewhat;the  corrosion, corrosive weal and erosion resistance of boron-modified copper-base alloys improve obvious-ly. 'rhe microalloying mechanism of boron in copper-base alloys was found

Key words: boron  copper-base alloys  microalloying