工程科学学报2016，Vol.38Issue(8)：1145-1152,8.DOI:10.13374/j.issn2095-9389.2016.08.014
Cr3 C2含量对Cr3 C2/Ni3 Al复合材料摩擦磨损性能的影响
Influence of Cr3 C2 content on the wear properties of Cr3 C2/Ni3 Al composites
摘要
Abstract
The Ni3 Al-alloy and its composites with different Cr3 C2 contents were fabricated by a hot isostatic pressing ( HIP ) technique. The influences of Cr3 C2 content on the microstructure, hardness and wear properties of the Cr3 C2/Ni3 Al composites were investigated by scanning electron microscopy ( SEM ) , energy dispersive spectroscopy ( EDS ) , X-ray diffraction ( XRD ) and wear tribometry. The results show that inter-diffusion occurs between the original Cr3 C2 and the Ni3 Al particles during the HIP process and the Cr3 C2 particles partially transform into M7 C3 ( M=Cr, Fe, Ni) structures. Under specific friction and wear conditions, the wear resistance of the Cr3 C2/Ni3 Al composites is significantly improved due to the addition of Cr3 C2 particles by about 4 -10 times, compared to the Ni3 Al alloy. In addition, the cutting and scraping effects of counter-part disks by the Cr3 C2/Ni3 Al composites decrea-ses with increasing Cr3 C2 addition, resulting in a reduction in wear rate of counter-part disks.关键词
金属间化合物/热等静压/颗粒增强复合材料/微观组织/摩擦磨损Key words
intermetallic compounds/hot isostatic pressing/particle reinforced composites/microstructure/wear分类
通用工业技术引用本文复制引用
傅丽华,韩伟,谢琰军,李长海,董超芳,赵琳,田志凌..Cr3 C2含量对Cr3 C2/Ni3 Al复合材料摩擦磨损性能的影响[J].工程科学学报,2016,38(8):1145-1152,8.基金项目
国家国际科技合作专项资助项目(2015DFA50970,2012DFG51670) （2015DFA50970,2012DFG51670）
清华大学摩擦学国家重点实验室开放基金资助项目(SKLTKF14B11) （SKLTKF14B11）
