A method to monitor non-ferrous debris in ferrographic analysis

作者：Liu, T-G^*; Liu, S-J; Yang, Z-Y

来源：Proceedings of the Institution of Mechanical Engineers - Part J: Journal of Engineering Tribology , 2010, 224(J2): 203-208.

DOI：10.1243/13506501JET609

• ferrography
• non-ferrous debris
• magnetic fluid
• magnetization

Non-ferrous debris in oil sample provide important information about the wear condition of a wear Couple containing non-ferrous metal components. In order to collect wear debris of non-ferrous metal material more effectively and deposit them on a ferrogram in a stable depositing ratio, the method of employing magnetic fluid as a magnetization agent to collect non-ferrous wear debris in ferrography was attempted. Magnetic fluid constituting Fe(3)O(4) magnetic particles was prepared using a precipitation reaction. Tetrachloroethylene was used as a carrier liquid to ensure that magnetic fluid can be easily mixed With lubricant oil sample. Oleic acid was used as a surfactant, which enables magnetic particles to adhere to the surface of non-ferrous wear debris. Then the non-ferrous wear debris was magnetized and deposited on a ferrogram in a stable depositing ratio. Copper debris was chosen as an example of non-ferrous debris to illustrate the magnetization effect of the magnetic fluid. With the help of magnetic fluid, the ferrographic analyst will achieve the operating condition of the machine more accurately.

• 出版日期2010
• 单位中国矿业大学（北京）