摘要
采用粉末冶金法制备了不同SiCp含量的SiCpFe3CuC复合材料,研究了烧结温度、SiCp含量及SiCp表面镀镍对材料组织结构、力学性能和干摩擦磨损性能的影响。结果表明,在1050℃烧结能获得最佳的力学性能,加入0.5wt%2wt%SiCp使材料的强度略有降低,耐磨性显著增强;烧结铁基合金的磨损机制为擦伤、疲劳磨损、粘着磨损,烧结SiCpFe3CuC复合材料主要为擦伤和磨粒磨损;SiCp含量约0.5wt%的复合材料耐磨性最佳,SiCp经镀镍处理后进一步提高其耐磨性,最佳SiCp含量提高到1wt%～1.5wt%。
SiCp/Fe-3Cu-C composites with different SiCp content were prepared by powder metallurgy process.The effects of sintering temperature,SiCp fraction and electroless plating nickel on SiCp surface on the microstructure,mechanical properties and tribological behaviour of the composites were investigated.The results show that the optimal mechanical properties of the composites are achieved when sintered at 1050℃.Addition of 0.5wt%-2wt% SiCp reduces the strength appreciably and improves the wear resistance remarkably of the SiCp/Fe-3Cu-C composites.The wear mechanisms of the Fe-3Cu-C matrix are scuffing,fatigue wear and adhesion wear,and the worn surface of SiCp/Fe-3Cu-C composites is characterized by abrasion wear.The optimal wear resistance was achieved for the composites with 0.5wt% SiCp.The wear resistance of SiCp/Fe-3Cu-C composites is improved by electroless plating nickel on SiCp with SiCp content of 1wt%-1.5wt%.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2006年第1期16-19,共4页
Transactions of Materials and Heat Treatment
基金
合肥工业大学科学研究发展基金(103037508)
合肥工业大学院士基金(204035014)
