烧结方法对Ni60B自熔合金组织与性能的影响  

Effect of sintering methods on microstructure and properties of Ni60B self-fluxing alloy

作　　者：丁小芹 韩小云[1,2] 游航[2] 梁翠[2] 王贤瑞[2] 徐金富[1,2] 

机构地区：[1]宁波工程学院材料工艺研究所,浙江宁波315016 [2]华东理工大学材料科学与工程学院,上海200237

出　　处：《金属热处理》2010年第7期47-50,共4页Heat Treatment of Metals

基　　金：宁波市自然科学基金(2010A610152)

摘　　要：分别采用放电等离子烧结（SPS）和有氧烧结（AS）制备Ni60B自熔合金,分析比较不同的烧结方法对其组织和性能的影响。结果表明：相对于有氧烧结,SPS制备的Ni60B合金组织更加均匀致密,晶粒细小,孔隙率低,γ-Ni固溶体基体上分布着更多的CrB、Ni3B、Fe3C和Cr7C3等硬质相;硬度提高6~7 HRC,密度提高0.96%~1.30%,耐磨性提高69%左右。Self-fluxing alloy（SFA） Ni60B was prepared by spark plasma sintering（SPS） and aerobic sintering（AS） technique.Influence of different sintering techniques on microstructure and mechanical properties of the alloy was studied.The results indicate that,compared with aerobic sintering,sintered body obtained by SPS has more uniform compact microstructure with fine grain size and low porosity,and more hard phases on γ-Ni solid solution matrix,such as CrB,Ni3B,Fe3C and Cr7C3.The hardness,density and wear resistance are improved 6-7 HRC,0.96%-1.30% and about 69%,respectively.

关 键 词：自熔合金 放电等离子烧结 有氧烧结 Ni60B合金 

分 类 号：TF124[冶金工程—粉末冶金]