Study on the Interaction between Talc and Perfluoropolyethers under Tribological Contact |
| |
Authors: | Xiao Gong Vahid Vahdat Scott Frankert Evan Anderson Shaun Chen Yiao-Tee Hsia |
| |
Affiliation: | 1. Department of Chemical &2. Petroleum Engineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261;3. Western Digital, 1710 Automation Parkway, San Jose, California 95131 |
| |
Abstract: | Particle contamination at the head–disk interface (HDI) is a major concern for the long-term reliability of hard disk drives. In the current study, it is shown that, surprisingly, soft and lubricious talc particles have a significant damaging effect on the friction performance of media lubricants, nanometer-thick perfluoropolyethers. Thermogravimetric analysis (TGA) and the adsorption studies indicate that two mechanisms, Lewis acid–catalyzed decomposition and surface adsorption, are responsible for the observed tribological degradation. The potential impacts of the findings here on the design of next-generation media lubricant have been discussed. |
| |
Keywords: | Perfluoropolyether Talc Magnetic Recording Lewis Acid–Catalyzed Decomposition Adsorption Friction Wear |
|
|