Research on Magnetic Memory Effect of the Ferromagnetic Materials during the Friction Process

In order to respectively reveal the effects of magnetic shield, materials and normal load on the tribo-magnetization, a series of experiments were carried out on a pin-on-block friction tester with a magnetic shield and a three-axis tunneling magneto resistive-type sensor which has high sensitivity and wide linear range. Results showed that the Earth’s magnetic-field can motivate the generation of magnetization, but this effect focus primarily on region of stress and deformation concentration. The material of frictional pairs has a big impact on magnetization. And the effect of normal load on ΔH(x) is no obvious regularity because of the generation of severe plastic