原位合成V_8C_7颗粒增强铁基表面复合材料研究

Research on V_8C_7 Particles Reinforced Iron Matrix Surface Composite by In-situ Technology

采用铸造-热处理复合工艺制备V8C7颗粒增强铁基表面复合材料试样,并用SEM、XRD等方法,观察分析了其组织形貌,用TUKON2100型显微硬度计测量了其硬度,用ML-100磨料磨损试验机进行了不同载荷下的磨损试验。结果表明,所制备的V8C7颗粒增强铁基表面复合材料试样的最大显微硬度是2333HV0.05;在室温条件下,当载荷为15N时,其平均耐磨性约是灰铸铁的13倍,在很大程度上提高了铁基体的耐磨性能。

The sample of V8C7 particles reinforced iron matrix surface composite by the compound technology of casting and heat treatment were prepared.It used the method of SEM and XRD,and observed the organization appearance.This experiment measured the hardness by the hardness measurement of TUKON2100,and did the abrasion test unde different loads by ML-100 abrasive wear testing machine.It is shown that the maximum hardness of compound sample of V8C7 particle is 2333HV0.05.When the load was 15N,the average wear resistance of V8C7 particles composite is 13 times higher than gray cast iron in the room tempreture.This method improves wear resistance of iron matrix in great degrees.