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Thermal Study of Nanometer-Spaced Head-Disk Systems

机译:纳米间距磁盘系统的热研究

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摘要

The 'cooling effect' of air flow is non-negligible in an ultralow-flying-height (FH) head-disk system. In this study, we develop a heat transfer model to study the heat flux and heat transfer in a head-disk interface. Moreover, a three-dimensional (3-D) finite element (FE) model is developed for steady-state analysis of a slider's thermal protrusion due to a DC write current. Results show that the heat flux is significantly different throughout a slider's air bearing surface (ABS). The high-speed air flow reduces approximately 80% of the temperature rise induced by the write current. This suggests that the actual heat flux distribution and a slider's ABS should be introduced in the thermal-structure FE analysis of a nanometer-spaced head-disk system.
机译:气流的“冷却效果”在超低飞行高度(FH)磁头磁盘系统中不可忽略。在这项研究中,我们开发了一个热传递模型来研究磁头-磁盘界面中的热通量和热传递。此外,还开发了三维(3-D)有限元(FE)模型,用于对由于直流写入电流而引起的滑块热突起进行稳态分析。结果表明,在滑块的空气轴承表面(ABS)上,热通量显着不同。高速气流减少了写入电流引起的温度上升的大约80%。这表明,应在纳米间距磁头-磁盘系统的热结构有限元分析中引入实际的热通量分布和滑块的ABS。

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