复层孔隙分布铁基粉末冶金材料摩擦性能分析  

Analysis of Friction Properties of Iron-based Powder Metallurgy Materials with Multi-layer Pore Distribution

作　　者：杨茜 Yang Xi(Lvliang Polytechnic Institute,Xiaoyi Shanxi 032300)

机构地区：[1]吕梁职业技术学院,山西孝义032300

出　　处：《山西冶金》2020年第6期32-33,56,共3页Shanxi Metallurgy

摘　　要：采用粉末冶金工艺制备复层孔隙分布的铁基粉末冶金材料,通过SEM分析材料微观组织形态和断口形貌,在HDM-20端面摩擦试验机下分析其摩擦性能。得出结论:向铁基粉末冶金材料中增添TiH2可增加孔隙率,生成TiC硬质相,使得孔隙力学性能的削弱,材料硬度提升,压溃强度降低。当复层材料孔隙率为23%时,对应的材料减摩耐磨性能最佳,复层材料的减摩耐磨性能对比单层材料性能更理想。文章主要以试验形式完成对复层孔隙分布铁基粉末冶金材料的摩擦性能的探讨。The iron-based powder metallurgy materials with multi-layer pore distribution were prepared by powder metallurgy process.The microstructure and fracture morphology of the materials were analyzed by SEM,and the friction properties were analyzed by HDM-20 end face friction tester.It is concluded that adding TiH2 to iron-based powder metallurgy materials can increase the porosity,form TiC hard phase,weaken the mechanical properties of pores,improve the hardness of material s,and reduce the crushing strength.When the porosity of the composite material is 23%,the friction and wear resistance of the corresponding material is the best,and the friction and wear resistance of the composite material is better than that of the single layer material.In this paper,the friction properties of iron-based powder metallurgy materials with multi-layer pore distribution are discussed by means of experiments.

关 键 词：复层材料 冶金材料 铁基粉末 摩擦性能 

分 类 号：TF123.11[冶金工程—粉末冶金]