The effect of a thermal contact sensor on the temperature distribution and heat flux at the disk surface. (March 2019)

• Record Type: Journal Article
• Authors: Zhang, Chuanwei; Zheng, Dezhi; Seo, Young Woo; Wang, Liqin; Gu, Le
• Is Part Of: Tribology international. Volume 131(2019)
• Page Start: 679
• Page End: 685
• Publication Date: 2019-03
• Subjects: Head-disk interface -- Thermal contact sensor -- Disk surface temperature; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2018.11.016
• Languages: English
• ISSNs: 0301-679X

Abstract

Abstract: The thermal response of the head-disk interface due to the presence of a thermal contact sensor is investigated. The temperature distribution near the contact sensor is calculated considering changes in the temperature of disk surface. The heat transfer in the air bearing near the contact sensor is determined. The results show that the contact sensor causes a high temperature of the disk surface, which is mainly generated by the conductive heat transfer. The increased disk temperature reduces the heat flux leaving the slider, which, in turn, causes an increased temperature of the contact sensor. Highlights: Temperature at head-disk interface in the neighborhood of a sensor is calculated. The heat flux both leaving the slider and entering the disk is determined. The sensor leads to an increase in the heat flux at head-disk interface. At small spacing, the conductive heat transfer has a dominant effect.