SiC增强铁基粉末冶金材料制备及镀合金镀层研究  

Preparation of SiC Reinforced Iron-based Powder Metallurgy Materials and Study on Alloy Coating

作　　者：郭明忠 谭世光 庞帏权 GUO Mingzhong;TAN Shiguang;PANG Weiquan(College of Material Science and Engineering,Shenyang Ligong University,Liaoning Shenyang 110159,China)

机构地区：[1]沈阳理工大学材料科学与工程学院,辽宁沈阳110159

出　　处：《广州化工》2025年第4期43-45,共3页GuangZhou Chemical Industry

摘　　要：采用粉末冶金的方法,制备了Si C颗粒增强Fe-2.5Ni-3Cu-0.6C铁基粉末冶金材料,研究了碳化硅含量对材料密度、显微硬度、磨损性能等的影响。采用化学镀的方法,在材料表面制备了Ni-P和Ni-Mo-P镀层,研究了镀层的微观结构及抗氧化性能。结果表明:当Si C的加入量为1.2%~2.4%(质量分数)时,材料密度下降,硬度先增加后下降,磨损量先下降后增加。Si C添加量为1.6%时,材料的硬度最大,磨损量最小。材料表面Ni-P和Ni-Mo-P镀层均由胞状物构成, Ni-Mo-P镀层胞状物更加细小。Ni-Mo-P镀层中Ni、 Mo、 P含量分别为89.53%, 4.09%, 6.39%。Ni-Mo-P镀层显微硬度高于Ni-P镀层,在500℃氧化温度下Ni-Mo-P镀层抗氧化性优于Ni-P镀层,氧化动力学曲线均呈抛物线形状。SiC particle reinforced Fe-2.5Ni-3Cu-0.6C iron based powder metallurgy material was prepared using powder metallurgy method.The effect of silicon carbide content on material density,microhardness,wear performance was studied.Ni-P and Ni-Mo-P coatings were prepared on the surface of the material using chemical plating method,and the microstructure and oxidation resistance of the coatings were studied.The results showed that when the amount of SiC added was 1.2%to 2.4%(mass fraction),the material density decreased,the hardness first increased and then decreased,and the wear amount first decreased and then increased.When the amount of SiC added was 1.6%,the material had the highest hardness and the lowest wear.Ni-P coating and Ni-Mo-P coating on the material surface were both composed of cellular materials,and the cellular materials in Ni-Mo-P coating were finer.The content of Ni,Mo and P in Ni-Mo-P coating was 89.53%,4.09%and 6.39%,respectively.The microhardness of Ni-Mo-P coating was higher than that of Ni-P coating,and the oxidation resistance of Ni-Mo-P coating was better than that of Ni-P coating at 500℃oxidation temperature.The oxidation kinetics curves all showed a parabolic shape.

关 键 词：铁基粉末冶金材料 显微硬度 Ni-P/Ni-Mo-P镀层 抗氧化性 

分 类 号：TG178[金属学及工艺—金属表面处理] TQ153[金属学及工艺—金属学]