摘要
利用Ti-C和Al-Fe2O3反应体系,采用SHS铸渗法在球铁表面制备复合材料。研究物料配比对铸渗层微观组织和磨损性能的影响。结果表明,形成表面复合材料的适宜配比为Ti-C体系55%+Al-Fe2O3体系40%+硼砂5%,Al与Fe2O3的质量比为2∶5。铸渗层中原位生成的Al2O3和TiC颗粒分布在Fe基固溶体上。低应力切削磨损条件下,铸渗层的磨损率仅为球铁基体的1/3,且其磨损率随磨程的增加而降低。
The iron-based surface composite was prepared by SHS infiltration casting based on the Ti-C and A1-Fe203 reaction systems. The effects of the proportion of the reactants on the microstructure and wear resistance of the infiltration casting layer were studied. The results show that the proportion of the reactants should be Ti-C system 55%＋A1-Fe203 system 40%＋borax 5%, and with the ratio of AI：Fe203 being 2：5. The A1203 and TiC particles, which were formed in-situ during the infiltration casting process, distribute in the matrix. Under a low-stress cutting wear condition, the wear rate of the infiltration casting layer is only 1/3 of the matrix. The wear rate decrease with the increase of running distance.
出处
《铸造技术》
CAS
北大核心
2014年第10期2285-2288,共4页
Foundry Technology
基金
中央高校基本科研业务费专项资金项目(2013G1311054)
关键词
自蔓延高温合成
铸渗
复合材料
磨粒磨损
Self-propagating high-temperature synthesis
Infiltration casting
Composite
Abrasive wear
