ヤナギサワ　ケンジ   Kenji Yanagisawa   柳澤　憲史    所属   追手門学院大学  理工学部 機械工学科    職種   准教授
言語種別	英語
発行・発表の年月	2007
形態種別	論文
査読	査読あり
標題	Thickness change of thin lubricant film on thin-film magnetic disks under flying head
執筆形態	代表編著
掲載誌名	Japanese Journal of Tribology
巻・号・頁	52(2),pp.193-205
著者・共著者	Kenji Yanagisawa,Youichi Kawakubo,Masato Yoshino
概要	Lubricants on thin-film disks are very important to reduce head and disk wear. Therefore, it is necessary to know the lubricant behavior under flying heads. Lubricant depletion due to flying heads has been studied experimentally. We developed a simulation program to calculate numerically the change in lubricant thickness under a flying head on a thin-film magnetic disk with a thick nonpolar lubricant. In recent HDDs, the lubricants thickness has become molecularly thin and polar lubricants have been used. In this paper, we took account of thickness-dependent lubricants diffusion and viscosity in our simulations to study molecularly thin polar lubricants. The simulated results showed that the changes of film thickness are small in thin films without considering the thickness dependence. Then, we showed the changes of lubricants thickness with thickness-dependent diffusion and viscosity are smaller than those without them. We considered it necessary to include thickness-dependence into diffusion and viscosity in these cases. © 2007 by Allerton Press, Inc.
ISSN	1045-7828