几种材料的腐蚀磨损研究

A STUDY ON THE CORROSIVE WEAR OF SOME KINDS OF METALLIC MATERIALS

采用自制的腐蚀磨损装置,使用了失重法及E.G.&G.PARC公司生产的M351系统,对45~#、1Cr18Ni9Ti、Cr17Ni2等3种材料在不同转速下往10%H_2SO_4+10%Sic砂浆中的腐蚀磨损行为进行了研究,完成了腐蚀磨损过程中电位、极化阻率随时间变化曲线的测定。结果表明:腐蚀磨损共同作用给材科带来的破坏远大于两者分别作用的总和,在这个过程中,材料表面钝化膜的覆盖率、钝化膜与基体结合力的强弱、钝化膜的自愈能力以及SiC粒子的冲击强度是主要的影响因素。

Using a weight loss method and M351 system by made E.G. &G. PARC Corporation the behaviours of corrosive wear of No.45 steel, Cr17Ni2, and 1Cr18Ni9Ti were studied on the self-made corrosive wear apparatus at different rotating velocities and in the slurry medium of 10% H_2SO_4+100%SiC. The corrosive potentials and polarization resistance were measured as a function of the time. The results showed that the damage due to corrosive wear is more severe than the sum of the respective damages of corrosion and wear, and that the coverage and recovery of passivation film on the surfaces, adhesion between passivation film and substract, and impact intensity of SiC particles are the major affecting factors.