The Effect Of Rare Earth Ce On Properties Of Pure Copper And Its Activity

Copper is widely applied in many professions by its outstanding electric conductivity, but its lower intensity has limited its application. Material strengthening and conductive enhancement are inconsistent, therefore, how to strength becomes one of hot spots at present studies. The rare-earth elements are "the Vitamin" of metal materials; they have special functions in improving metal materials. In this experiment, people join rare-earth element Ce in casting pure copper by the form of intermediate alloy and analyze its influences on behavior, conductivity, tensile strength, plasticity, hardness and wear resistant of casting pure coppers with different amount of Ce. The research discovered that Ce improved copper's casting properties, enhanced the wear resistance. As the increase of Ce, the organizations appeared thinner,the metallurgy quality improved,the inclusion reduced and conductivity, tensile strength, plasticity and hardness enhanced. When the amount of Ce is more than 0. 04%, the crystal boundary broadened, the organization became thicker, the conductivity, wear resistant and mechanics performances also reduced.