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首页> 外文期刊>International Journal of Heat and Mass Transfer >Numerical study of thermal-induced lubricant depletion induced on an anisotropic multilayer disk in a heat assisted magnetic recording system
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Numerical study of thermal-induced lubricant depletion induced on an anisotropic multilayer disk in a heat assisted magnetic recording system

机译：热辅助磁记录系统中各向异性多层磁盘上热诱导润滑剂耗竭的数值研究

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摘要

This paper presents a numerical investigation of heat transfer and lubricant depletion on the hard disk surface in a heat-assisted magnetic recording (HAMR) system. The disk consists of multilayer structures with anisotropic thermal properties on the top-recording layer and a thin layer of lubricant on the top surface. The heat generated by the laser results in the non-uniform temperature filed and subsequent lubricant depletion on the disk top surface. Two multilayer structures with different alloy materials on the top layer are studied. The results show that the top-layer alloy anisotropy does affect both temperature distribution and lubricant depletion, with the extent of the effect depending on the thermal diffu-sivity ratio (defined as the ratio of the thermal diffusivity along x-y direction to that along z direction on the top layer) as well as the alloy material of the top layer. For the top-layer alloy with inferior thermal properties, the effect of anisotropy is more significant at the range of thermal diffusivity ratio from 1 to 0.5. With a further reduction in this ratio, the anisotropy of the top-layer material does not show further noticeable effect.
机译：本文介绍了热辅助磁记录（HAMR）系统中硬盘表面传热和润滑剂消耗的数值研究。该盘由在顶部记录层上具有各向异性热特性的多层结构和在顶部表面上的润滑剂薄层组成。激光产生的热量会导致温度场不均匀，并随后在磁盘顶面上耗尽润滑剂。研究了在顶层具有不同合金材料的两种多层结构。结果表明，顶层合金各向异性确实会影响温度分布和润滑剂消耗，其影响程度取决于热扩散率（定义为沿xy方向的热扩散率与沿z方向的热扩散率之比）。在顶层）以及顶层的合金材料。对于具有较差热性能的顶层合金，在热扩散比为1至0.5的范围内，各向异性的影响更为显着。随着该比例的进一步降低，顶层材料的各向异性不再显示出明显的效果。

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  • 来源
  • 作者

    Yan Zeng; Xiaoyang Huang; Weidong Zhou; Shengkai Yu;

  • 作者单位

    School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;

    School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;

    Data Storage Institute, Agency for Science, Technology and Research (A→STAR), DSI building, 5 Engineering Drive 1, Singapore 117608. Singapore;

    Data Storage Institute, Agency for Science, Technology and Research (A→STAR), DSI building, 5 Engineering Drive 1, Singapore 117608. Singapore;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    multilayer structure; thermal anisotropy; lubricant depletion; heat-assisted recording system; numerical simulation;

    机译：多层结构热各向异性润滑剂耗尽;热辅助记录系统;数值模拟;

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