合金化铁粉对金属/金刚石复合材料性能的影响  

Effect of additives of prealloyed iron powder on properties of metal/diamond composite

作　　者：修稚萌[1] 张民[1] 孙旭东[1] 何凤鸣[1] 

机构地区：[1]东北大学材料冶金学院,辽宁沈阳110004

出　　处：《粉末冶金技术》2004年第2期67-70,共4页Powder Metallurgy Technology

基　　金：辽宁省自然科学基金重大项目 (2 0 0 110 10 0 2 )

摘　　要：本文研究了预合金化的铁磷及铁铜粉末对金属 /金刚石复合材料性能的影响。结果表明 ,采用预合金化的铁基粉末能够提高金属基体的密度、抗弯强度和耐磨性。以铁磷预合金粉末为基础粉末时 ,金属基体相对密度可达 99 6 %、抗弯强度可达 15 6 7MPa、磨损速率为 1 2 5× 10 -2 g/min ,比以还原铁粉为基础粉末的强度提高 30 %、磨损速率降低了 79%。粉末的颗粒尺寸对金属基体的硬度有明显的影响 ,降低基础粉末的颗粒尺寸 ,有利于增加硬质相的弥散强化作用 ,增加材料的硬度。The effect of additives of iron-phosphorus and iron-copper prealloy powder on the properties of metal/diamond composite materials was studied. The results indicate that iron based prealloy powder can increase the density, strength and wear-resistance of the metal matrix. The metal matrix with the iron-phosphorus prealloy powder as based powder, has relative density of 99.6%, three point bending strength of 1567 MPa and wear rate 1.25 × 10-2 g/min. The strength is 30% higher and the wear rate is 79% lower than metal matrix with iron powder as based powder. Hardness of metal matrix increases with decreasing particle size of the base powder.

关 键 词：预合金粉 金刚石 复合材料 力学性能 铁粉 

分 类 号：TB33[一般工业技术—材料科学与工程] TF125.3[冶金工程—粉末冶金]