【摘要】 研究了基体中不同合金元素及热处理对高碳、高合金铁基渗铜烧结阀座材料的密度和力学性能的影响．结果表明，用机械混合高碳、高合金粉末压坯经过一步法烧结／熔渗后，密度达到7．88g／cm~3（相对密度98．2%），硬度和抗弯强度分别达到HRc45．4和1124MPa．将渗铜后的材料在900℃淬火，580℃高温回火后，铁颗粒中组织主要为回火马氏体，材料硬度达到HRc40以上．更多还原

【Abstract】 The influence of different alloying elements and heat-treatment on the density andmechanical properties of the copper-infiltrated/sintered iron-based alloy was investigated. Theiron-based alloy blank with high content of carbon and alloying elements was developed by mechanical mixing. After copper-infiltration/sintering， the material has the density of 7. 88 g/cm3 (the relativedensity of 98.2%)， hardness of HRc 45.2 and TRS of 1 124 MPa. After quenching at 900℃ andhigh-temperature at 580℃， with large amount of martensite in the microstructure the material possesses the hardness of over HRc 40.更多还原