NDLI: Effects of End Groups on the Tribochemical Reactions of Lubricants at Head-Disk Interface

Content Provider	Springer Nature Link
Author	Mori, Shigeyuki Cong, Peihong Nanao, Hidetaka Numata, Toshimitsu
Copyright Year	2004
Abstract	Mass spectrometry was used to monitor in-situ gaseous species that were generated at the head-disk interface (HDI) in a high vacuum. It was found that the end groups of the lubricants significantly affected the wear durability at the HDI; piperonyl (–CH$_{2}$-phe = (O)$_{2}$ = CH$_{2}$) terminated Fomblin AM3001 lubricant exhibited longer life than hydroxyl (–OH) terminated Fomblin ZDOL lubricant. The continuous removal of the lubricants resulted in a continuously increasing friction coefficient. Further, the characteristics of tribochemical reactions of the lubricants (Fomblin Z series) with different end groups was investigated in details using Time-of-Flight Secondary Ion Mass Spectroscopy (TOF-SIMS) just after the sliding tests. It was found that the decomposition of the end groups was more significant than that of the backbone. The lubricants terminated with the following groups showed the following order of increasing decomposition: –CH$_{2}$O-CH$_{2}$-phe = (O)$_{2}$ = CH$_{2}$ (AM3001), –CH$_{2}$OH (ZDOL) < –CH$_{2}$OCH$_{2}$CH(OH)CH$_{2}$OH (Z Tetraol) < –CH$_{2}$(OCH$_{2}$CH$_{2}$)$_{n}$OH (ZDOL-TX), –COOH (Z Diac). The decomposition of the lubricants appeared to start from the end groups.
Starting Page	317
Ending Page	325
Page Count	9
File Format	PDF
ISSN	10238883
Journal	Tribology Letters
Volume Number	17
Issue Number	2
e-ISSN	15732711
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2004-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physical Chemistry Mechanics Surfaces and Interfaces, Thin Films
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Mechanics of Materials Mechanical Engineering Surfaces and Interfaces

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