机械滑动工作条件对304不锈钢在人工唾液中腐蚀磨损性能的影响

Effect of Mechanical Sliding Working Conditions on the Corrosion and Wear Properties of 304 Stainless Steel in Artificial Saliva

摘要: 讨论304不锈钢在人工唾液环境中，不同机械滑动工作条件对其腐蚀磨损性能的影响。在静态(滑动但不加载)和动态条件下，对不锈钢在人工唾液中的电位进行极化扫描。根据得出的极化曲线在阳极区选择−0.2 V作为恒定电势。考察在恒电位条件下，不同机械滑动工作条件对304不锈钢在人工唾液中腐蚀电流的影响，计算相应的磨损率。实验发现，通过改变机械滑动条件，即接触频率、接触时间以及接触载荷，可以明显的看出：在接触载荷与滑动周期不变的条件下，其磨损率随着接触频率的增加而不断增大；在接触载荷不变的条件下，其磨损率随着滑动时间的增加而变化不大；在接触频率以及滑动时间恒定的条件下，不锈钢的磨损率随着接触载荷的增加而显著变化。

Abstract: Discuss the influence of different mechanical sliding working conditions on the corrosion and wear performance of 304 stainless steel in artificial saliva environment. Polarization scans of the poten-tial of stainless steel in artificial saliva under static (sliding but not loading) and dynamic conditions. According to the obtained polarization curve, −0.2 V was selected as a constant potential in the anode region. Investigate the effect of different mechanical sliding working conditions on the cor-rosion current of 304 stainless steel in artificial saliva under constant potential conditions, and cal-culate the corresponding wear rate. The experiment found that by changing the mechanical sliding conditions, that is, the contact frequency, contact time, and contact load, it can be clearly seen that: Under the condition of constant contact load and sliding cycle, the wear rate and wear amount in-crease with the increase of contact frequency, but the wear amount does not change much; Under the condition of constant contact load, the wear rate increase with the increase of sliding time, but the wear rate does not change much; Under the condition of constant contact frequency and sliding time, the wear rate of stainless steel change significantly with the increase of contact load.