Preparation and Characterization of Fe/SiC Ceramic-Metal Composites
SiC is a perfect reinforced material,characteristic of high hardness,high wear-and corrosion-resistant property,and low cost.SiC-reinforced iron-matrix composites show high wear resistance,high hardness,high inflexibility and high strength,with wide applications as superior wear-resistant and high temperature materials.This paper reported a heterogeneous precipitation method to coat SiC with copper particles.The vacuum hot-pressing method was used to sinter the Fe/SiC composites with Cu-coated SiC powders.The techniques of XRD and SEM were used to characterize the compositions and microstructures of the samples.The Archimedes method was used to test the density.The results showed that SiC and Cu were homogeneously mixed in the composite powders obtained by the heterogeneous deposition method,and that the composites with 5wt% of SiC (Cu) obtained at 950℃ have a high relative density of 96%,a high hardness of 4121 MPa and a high bending strength of 646 MPa.The enhanced properties of Fe/SiC composites could result from the improved interfacial consistency by using Cu-coated SiC powders,which could inhibit some adverse interfacial reactions.
Fe/SiC Vacuum hot-pressing sintering Interface modification
Zhongsheng Liu Gang Shao Deliang Chen Rui Zhang
School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China;Zhengzhou
国际会议
The Sixth China International Conference on High-Performance Ceramics(第六届中国先进陶瓷国际研讨会(CICC-6))
哈尔滨
英文
66-68
2009-08-16（万方平台首次上网日期，不代表论文的发表时间）